Creating Biology Teaching in Junior High School
The following are some innovative ways of teaching biology in junior high school: ** I. Teaching model innovation ** 1. ** Open Teaching ** - Teaching objectives and content: The teaching objectives and content are dynamic and open. Biology courses were updated quickly and needed to be improved continuously. This characteristic was suitable for open teaching. For example, when teaching green plant-related content, students could be brought into nature and experience the differences between green plants in person, so as to fully experience the course content, stimulate learning enthusiasm and initiative, and improve the teaching effect. 2. ** Layered Teaching ** - Take into account the differences between students: Take into account the differences between students in terms of family situation, education, potential, etc., including factors such as knowledge background, IQ, and emotions. The traditional teaching model used a unified spoon-feeding method to teach students in accordance with their aptitude, while the layered teaching method could take care of the individual development of students. - "Scientific grouping: Students are grouped according to their own knowledge system, ability level, and other factors to minimize the differences between students in the same group. Then, a unified teaching model is used to teach students in the group, respecting the differences between students, helping students build self-confidence and stimulate learning interest. ** 2. Use the smart classroom environment for innovation ("Five-dimensional Integration" teaching model)** 1. ** To improve the quality of preparation and stimulate students 'interest (First Dimension)** - The teacher used the smart classroom to push the micro-class video to assist in the preparation, and the students asked questions after watching it. Teachers could use data feedback to know whether students were watching microclasses, and they could also understand problems through message boards. Students could also discuss online and form a learning community. 2. ** Construct a life situation and do a good job of introducing it into the classroom (second dimension)** - The core knowledge of the classroom was integrated into the living situation, breaking through the limitations of time and space in the classroom. For example, life observation tasks related to biological knowledge, such as the "7-Day Observation Diary of Mung Bean Seeds", could be assigned. Students could use the tablet terminal to take photos and upload them. This would help to cultivate academic literacy and allow students to understand core knowledge in their daily lives. 3. ** Enriching classroom activities, teachers and students explore together (Third Dimension)** - Make use of the smart classroom environment to enrich the forms of interaction, such as answering questions, random roll call, etc. to increase the attention and participation of students in the classroom. During group discussions, the teacher could send a discussion task, and the group would upload the results to the big screen to share. For biological experiments, teachers could display the experimental process through the physical booth of the tablet terminal. For experiments that were difficult to complete in the classroom, they could use the virtual experimental booth to deepen the students 'understanding of knowledge. 4. ** Prompt feedback in class, using learning to stimulate reflection (Fourth Dimension)** - In the smart classroom environment, the teacher arranged the whole class to answer questions, and the students used the tablet terminal to answer the questions. The teacher grasped the students 'answers in real time through intelligent correction and big data statistics and analysis, so as to better complete the teaching and achieve the course goal. 5. ** To improve the quality of assignments and evaluations (Fifth Dimension)** - In addition to traditional paper assignments, various forms of assignments could be arranged through the smart classroom environment, such as micro-class review, virtual experiments, activity experience, test questions, handwritten report production, Short videos editing, etc. In the evaluation class, big data was used to analyze the test situation, understand the common mistakes, and carry out targeted explanations. It could also generate a customized study manual to push exercises for students 'weak knowledge points. ** 3. Through project-based learning and project-based learning, innovation ** 1. ** Project-based learning ** - For example, in Tianjin City Nancang Middle School, teachers and students used project-based learning mode to carry out experimental research in the fields of tissue culture, water culture, soil culture, and microorganisms. In the process of project research, students had to consult literature, design experiments, draw mind maps, determine experimental processes, analyze experimental data, construct mathematical models, write experimental reports, display results, etc. This helped to improve students 'various abilities, such as observation ability, reading literature ability, experimental operation ability, argumentation ability, analysis problem ability, language expression ability, and also cultivate scientific thinking and scientific research spirit. 2. ** Research-based learning ** - Teachers set up many research learning courses such as "tissue culture of candied dennie","water culture vegetables","water culture flowers","production of microorganisms fertilizer", etc., and self-compiled school-based teaching materials to encourage students to carry out innovative learning and research, provide students with individual and diverse choices, and promote the cultivation of students 'interests, practical ability, and innovative spirit. 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Junior high school biology teaching specific strategies
The biology teaching strategy for junior high school was as follows: - ** Concept Teaching Strategy **: - ** Concept Introduction **: - ** Combining life experience and intuitive introduction **: Starting from the student's life, use the things and phenomena in life to explain abstract and microscopic biological knowledge and introduce concepts. For example, using dandruff to draw out the concept that cells are the basic unit of the structure and function of organisms. - ** Use old and new knowledge to connect and introduce **: Grasp the connection between the knowledge points in the teaching materials and use old knowledge to introduce new concepts. For example, he used the old knowledge of photosynthesis to explain the new knowledge related to energy conversion. - ** Create a situation to introduce **: Create a situation to introduce concepts such as experiments, practice, questions, or life for short concepts that can expand into more knowledge points. For example, the concept of photosynthesis was introduced through experiments such as " Green Leaves Make Amylum Under Light ". - [In-depth analysis of concepts]: For similar and easily confused concepts, the teacher should analyze and explain them in depth, guiding the students to deepen their understanding through comparison, reflection, and application. After the completion of the chapter teaching, analogy, induction of adjacent, relative, parallel, or subordinate concepts, forming a concept system, such as using concept maps to construct a concept network, identifying the similarities and differences of concepts, and improving problem solving skills. - ** Realization of knowledge goal based on main body development **: - ** According to the curriculum standard, the knowledge goal is to let the students develop in the basic facts, concepts, principles, and laws of biology such as the structure level, life activities, organisms and environment, biological evolution, and biotechnology, human body structure, function, and health care knowledge, and the application of biological science and technology. - ** Using the theory of structuralism to improve teaching **: Take the "heart" teaching as an example. The traditional teaching method uses pictures or simple drawings to explain the structure of the heart, which is not effective in understanding the function. After the improvement, the real situation was presented with the use of multi-media technology, and teaching activities such as " feel the wonders of the heart-recognize the blood vessels connected to the heart-explore the direction of blood flow in the heart-realize that the heart is the driving organ of blood flow-protect the heart " were designed to help students understand the function of the heart. - ** Teaching strategy combined with life practice **: Biology teaching is closely related to life. Teachers should guide students to observe biological life phenomena and explore the rules, such as the use of washing powder in daily life, digestion in high fever, eating and drinking habits, the choice of morning exercise location, the use of hormone, etc., to cultivate students 'interest in exploring scientific principles. - ** Teaching strategies that focus on individual differences **: Teachers should fully understand the individual differences of students, respect their uniqueness, and allow students to actively participate in the design of questions, teaching process, practice arrangements, and other aspects to create opportunities for success. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biology essay, junior high school
Biology was a subject that studied life phenomena and the composition, structure, function, growth, development, reproduction, and so on. It was one of the branches of the natural sciences and was closely related to chemistry, physics, mathematics and other disciplines. The research content of biology was very broad, including cell biology, molecular biology, ecology, genetics, developmental biology, biochemistry, and so on. Through the study of biology, we can understand the origin and evolution of life, the structure and function of living things, the relationship between living things and environmental factors, the adaptability and variety of living things, and so on. Biology is also widely used, not only to help us better understand nature, but also to provide scientific basis for many fields such as medicine, agriculture, environmental protection, biotechnology and so on. For example, biological research in the field of medicine can help us better understand the origin and mechanism of diseases and better treat patients; biological research in the field of environmental protection can help us better understand the functions and mechanisms of the ecosystem and better protect the environment. Biology is a very important subject. It can not only help us better understand nature, but also provide scientific basis and solutions to practical problems in many fields. We should strengthen the study of biology to better protect nature and contribute to the future development of mankind.
Is junior high school biology useful?
Biology in middle school and high school was useful. In terms of the construction of the knowledge system, junior high school biology was the foundation of high school biology learning, while high school biology was a more systematic, in-depth, and high-level thinking learning that pursued the essence of the subject. Junior high school biology allowed students to have a preliminary understanding of the basic concepts of biology, life phenomena, and other basic knowledge, such as the classification and structure of organisms. Senior high school biology further deepened into the core content of cell structure and function, genetic laws, biological evolution, and so on, helping students build a more complete biological knowledge system. From the perspective of quality improvement, the study of biology could help to improve students 'scientific quality. Students could learn biological knowledge, understand the research process and exploration spirit of biological scientists, stimulate their interest in scientific research, improve their scientific inquiry ability, and cultivate rigorous scientific thinking. In real life, the biology knowledge of middle school and high school was also widely used. For example, understanding the physiological structure and function of the human body could help one live a healthy life, and mastering the knowledge of the ecosystem could help one understand the importance of environmental protection. Moreover, biology knowledge was related to career development, such as medicine, biological research, environmental protection, and other fields. The study of biology in junior high school laid the foundation for future development in these fields. From the perspective of examinations, biology was an important subject in the middle school entrance examination and college entrance examination, and its results would have an impact on one's studies. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school biology single-cell biology open class teaching plan and reflection and evaluation
The following is an example of a junior high school biology single-celled biology lesson plan: * * 1. Teaching objectives ** 1. knowledge objectives - To let the students understand that single-celled organisms can complete life activities independently. - Students will be able to give examples of the relationship between single-celled organisms and humans. 2. ability objective - Through the observation of the Paramecium under the microscope, students 'microscope operation skills will be strengthened. 3. emotion goal - Cultivate the students 'learning habits of thinking positively, taking the initiative to explore, and speaking boldly. * * 2. Important and Difficult Points in Teaching ** 1. teaching focus - Single-celled organisms could complete life activities independently. 2. teaching difficulties - The principle of single-celled organisms completing life activities independently. - Use a microscope to observe the Paramecium accurately. * * 3. Teaching preparation ** 1. experimental preparation - Paramecium culture fluid, microscope, glass slide, cover glass, dropper, magnifying glass, some cotton fiber, tweezers. 2. Teaching Coursewares. * * 4. Teaching process ** 1. to lead - Through the basic units of biological structure and function, the structure levels of animals and plants, and other knowledge that he had learned before the review, he showed the picture of the eye worm and compared it with the multicellularized organism to draw out the concept of the unicellularized organism. 2. Teaching new lessons - Common single-celled organisms - Show pictures of single-celled organisms such as bacteria, yeast, Paramecium, Amoeba, Chamaesium, and euglena to let students understand the variety of single-celled organisms. The students were guided to think about their living environment and came to the conclusion that most single-celled organisms lived in water (freshwater and seawater) or humid environments (moist soil, tree trunks, etc.), and some of them were parasitic on other organisms. They also emphasized that although single-celled organisms were composed of only one cell, they could independently complete life activities such as nutrition, breathing, secretion, movement, reproduction, and so on. - Observation of Paramecium Experiment - The purpose of the experiment was to observe the appearance and movement of the Paramecium. - He introduced the experimental materials and tools, such as the culture fluid of the Paramecium, the microscope, and so on. - Ask the students questions before the experiment, such as why they were absorbing from the surface of the culture fluid and the effect of putting cotton fibers on the droplets. - Students conducted experiments and thought about related questions, such as what could be observed with a magnifying glass, what the shape of the Paramecium looked like, and so on. The group representative reported the experiment results, the teacher commented, and finally played the experiment video. - Internal structure and physiological function of Paramecium - The picture of the structure of the Paramecium was shown. The explanation was that it moved through the cilia, and the cilia moved to make it rotate in the water and respond to external stimulation. It obtained nutrients through the mouth groove and digested food through the digestive vesicle. It discharged waste from the body through the anus and expansion vesicle. It breathed through the surface membrane. It also explained the reproduction methods of the Paramecium, including division reproduction, mating reproduction, etc., so that the students could understand that although the Paramecium only had one cell, it had the common characteristics of all living creatures and could independently complete various life activities. - Other single-celled organisms - Show a picture of Chamaematis and give a simple explanation. Let the students know that there are many single-celled organisms similar to the Paramecium. * * Reflection and Evaluation ** 1. merit - The integration of experimental teaching could help improve students 'interest in learning and hands-on ability. For example, in the experiment of observing the Paramecium, students could operate the microscope themselves and intuitively feel the shape and movement of single-celled organisms. This was better than purely theoretical teaching. - The question-and-guide teaching method could stimulate the students 'thinking ability. The questions set in each teaching link, such as the questions before the experiment, could allow the students to observe and think in a targeted manner during the experiment, and cultivate the students' scientific literacy of active inquiry. - The use of multi-media could visualize abstract knowledge by showing pictures of single-celled organisms, the structure of the Paramecium, and motion videos. It could help students better understand the concept and structure of single-celled organisms. 2. deficiency and improvement - In terms of class time control, when students were doing experiments and group discussions, there might be situations where the time was too long or too short. In the future, he could plan the time of each link more accurately, predict the possible situations of the experiment in advance, and guide the students 'reports more effectively to ensure the smooth progress of the teaching. - Students with weaker learning abilities might have difficulty understanding the internal structure and physiological functions of single-celled organisms. They could add more analogies or simplify the explanation of complex concepts in the teaching process, and provide more tutoring materials or one-on-one tutoring after class to meet the learning needs of students at different levels. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Design of Jinan Version Teaching Plan for the Junior High School Biology Trial Teaching Model Class
Since it was not clear which chapter of the Jinan version of junior high school biology lesson plan design ideas, the following examples were "The structure of flowers","The formation of fruits and seeds" and "Blood vessels" to explain some common design ideas of the Jinan version of junior high school biology lesson plan. ** I. Determination of teaching objectives ** 1. ** Knowledge and Skill Target ** - For example, the content of "The structure of flowers" was to let students identify the structure of various parts of flowers and learn the basic methods of dissecting flowers."The formation of fruits and seeds" was to let students understand the structural changes in the process of fruit and seed formation."Blood vessels" was to let students briefly describe the structure and functional characteristics of arteries, veins, and capillaries and distinguish the three types of blood vessels. 2. ** Course, Method, and Target ** - In <<The structure of flowers>>, the students 'observation ability and hands-on operation ability were trained through the observation and dissection of peach blossoms. In <<Blood vessels>>, the students' observation ability and induction ability were improved through model observation. 3. ** Emotions, attitudes, values, goals ** - For example, through the study of the structure and function of various parts of flowers, the structure of flowers gradually formed the biological point of view of "the unity of biological structure and function", enhancing the awareness of caring for vegetation; the concept of the unity of structure and function was formed in the blood vessels. ** 2. Determination of teaching difficulties ** 1. ** Main point ** - The structure, dissection, and observation of flowers in <<The structure of flowers>> were the main points; the formation of fruits and seeds in <<The formation of fruits and seeds>> were the main points; and the structure and function of the three blood vessels in <<Blood Vessel>> were the main points. 2. ** Difficulty ** - It was difficult for students to master the dissection and observation methods of flowers in the book "The structure of flowers"; it was difficult for students to understand the corresponding parts of flowers that developed into fruits and seeds in the book "The formation of fruits and seeds"; it was difficult to understand the relationship between the structure and function of blood vessels in the book "Blood Vessel". ** 3. Design of the teaching process ** 1. ** Introduction to a new lesson ** - In "The structure of flowers," a variety of videos of flowers blooming were presented on a variety of media to draw out the topic."Blood vessels" guided students to tie bandages on each other's wrists and observe the changes in the back of their hands to draw out the knowledge related to "blue veins"(blood vessels). 2. ** Exploring new knowledge (new lesson)** - In "The structure of flowers", the students were asked to tell the structure of the flower by intuition. Then, the teacher would guide them to observe the structure of the flower in a certain order, recognize the structure of the flower stalk, the flower holder, and so on. They would also carry out the dissection experiment of the flower. In "The formation of fruits and seeds", the knowledge points were drawn out by doing questions, and then the changes of the structure of each part of the flower during the formation of fruits and seeds were explained in detail. In "Blood Vessel", the students were asked to observe the blood vessels and blood flow in the caudal fin of small fish, and then the types and functions of the blood vessels were taught. 3. ** Consolidating and improving ** - For example, in the book "The Structure of Flowers", students were instructed to draw the structure of the dissected flower and label the name of the structure. 4. ** Class summary ** - Guide the students to share their gains from this lesson and clarify the key content. 5. ** Homework arrangement ** - For example,"The Structure of Flowers" allowed students to introduce the knowledge gained in class to their family and friends after class. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to write the teaching report model essay of junior high school biology class
The following is an example of a junior high school biology teaching report: ** I. Teaching philosophy and goals ** Biology was a natural science based on experiments. The teaching philosophy should emphasize on letting students understand life phenomena and observe biological structures through experiments. Teaching goals were set according to the requirements of the new curriculum standards, aiming to make students learn easily, flexibly, and effectively. ** 2. Teaching content and methods ** 1. ** Experimental teaching ** - Experiment was an important part of biology teaching. The content, form, and requirements of the new teaching materials increased, which required teachers to follow the three basic principles of being objective, rigorous, respectful, and flexible. - Before the experiment, he had to strengthen the education of organizational discipline. The laboratory rules and experimental rules were the guarantee of a good experimental class. They had to emphasize their importance to the students and cultivate good experimental habits. For example, students were not allowed to mix positions or groups, and they had to report to the teacher if they left. - The key was to let the students review the experiment content and clarify the experiment process. For more difficult experiments, teachers could explain the difficulties and key points in advance, and they could also use extra-cursory interest groups to train key students to tutor other students. For example, the teacher had to explain the steps and precautions in detail when making temporary films and using a microscope. - During the experiment, students should be taught to care for teaching equipment and save experimental materials. For example, when making onion skin cells for temporary mounting, appropriate materials should be taken, and materials such as lens wiping paper and blotting paper should be used sparingly. Before and after the experiment, hands should be washed to avoid staining the instruments and reagents. At the same time, experimental instruments and material registration forms should be filled in to ensure that they were not lost. 2. ** In terms of classroom teaching ** - In the teaching of theoretical knowledge, we must pay attention to the systematic and logical nature of the knowledge. For example, when explaining the structure of the ear and the formation of hearing, it was necessary to clearly explain the sound wave transmission path, the location of the auditory receptor, and the part where the hearing was produced. At the same time, it was necessary to explain the principle of opening or closing the mouth and covering the ears when encountering a loud sound. - They could also carry out a variety of teaching activities, such as outdoor teaching. For example, outdoor biology classes that led students out of the classroom and allowed them to get close to nature allowed students to observe creatures in the ecological environment of the campus, such as insects and earthworms in the grass, laying a foundation for learning related biological knowledge. At the same time, it could guide students to observe, explore, and discuss sick apple trees and injured orioles. This would not only impart biological knowledge, but also cultivate students 'life values and social responsibility. ** 3. Teaching Achievement and Reflection ** 1. ** Achievement ** - Through the experimental teaching, the students 'hands-on ability was improved and their understanding of biological knowledge was deeper. In the process of following the experimental rules, the students developed good experimental habits and discipline awareness. - In theoretical knowledge teaching, students could grasp the key content of biological knowledge, such as the structure of the ear and hearing related knowledge. - Special teaching activities such as outdoor teaching allowed students to improve their life quality through experience and perception, establish the concept of harmony between man and nature, and enhance their sense of social responsibility. 2. ** Reflection ** - In the experimental teaching, some students might not fully grasp the experimental difficulties, and more tutoring was needed for these students in the follow-up teaching. - In theory teaching, the explanation of some abstract knowledge might not be vivid enough, and the teaching method needed to be further improved. - In outdoor teaching, although it achieved good teaching results, there was still room for improvement in safety management and the full use of teaching resources. ** 4. Future Directions for Teaching and Learning ** 1. Continue to strengthen the optimization of experimental teaching and improve the accuracy and proficiency of students 'experimental operations. 2. To explore more diverse theoretical knowledge teaching methods, such as the use of modern educational technology such as multi-media to make abstract knowledge more intuitive. 3. In special teaching activities such as outdoor teaching, safety measures should be further improved, teaching content should be planned more reasonably, the potential of teaching resources should be fully tapped, and the organic combination of biology teaching and life education should be better realized so as to cultivate students 'correct life values and promote the healthy and sunny growth of students. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
2022 Junior High School Biology General Examination Paper
The following is part of the 2022 biology test questions for the junior high school academic level examination in Shen Zhen: 1. Multiple choice questions: 1. In Mr. Lu Xun's "From Baicao Garden to Sanwei Bookstore", the smooth stone well railing was not involved in the description of the scenery. The answer was B. 2. The slide specimen that could see the plastids under the microscope was fresh spinach leaves. The answer was C. 3. (About the cell physiological activity diagram), the answer is D. 4. When the cell image was observed under the low-power objective lens of the microscope, the number of cells in the field of view decreased and the field of view darkened when the objective lens was changed to a high-power lens. The answer was D. 5. There was plenty of rain during the wheat heading and filling stage. The bumper harvest of grain in our country reflected the environmental impact on living things. The answer was A. 6. The flesh cells of the Western Red Pheasant were loosely arranged, and the vesicles were large. They were rich in vitamins and sugar substances. These cells were nutritional tissues. The answer was A. 7. The answer was C. 8. In the summary of the characteristics of plants, the wrong one was mosses, and the answer was C. 9. The structure that developed into the "nucleus" of the longan was the ovule. The answer was D. 10. The measure that was not conducive to increasing the yield of vegetable greenhouses was to reduce the temperature difference between day and night. The answer was B. For the complete test paper and answers, please refer to the answers to the biology test questions of the 2022 Guangdong Junior High School Academic Level Examination. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Dingnan junior high school biology teacher salary
90.9% of the teachers in Dingnan County, Ganzhou Province received a salary of $2 - 6K. In 2023, it was 41% lower than in 2022. The average monthly salary was $2 - 6K. The data was from 11 samples in the past year (as of 2024 - 04 - 22). However, they did not find any specific data on the salary of biology teachers in Dingnan Junior High School, but it could be used as a reference for the salary of teachers in Dingnan County. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Are there any books on geography and biology in junior high school?
Yes. For example, there were junior high school biology and geography textbooks published by the People's Education Press, and a full set of junior high school geography textbooks published by the Beijing Education Press. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Shaanxi 2022 Junior High School Biology Examination Paper
First, multiple-choice questions 1. The following idioms refer to living things as () - A. The mountains and rivers are unharmed (no living creatures are involved). - B. Beautiful weather (no living creatures involved). - C. The sea dried up and the rocks crumbled (no living creatures were involved). - D. Birds and flowers (Birds and flowers are biological). 2. When using a microscope (as shown in the picture) to observe the permanent section of the root apex, the relevant description is correct () - A. When the lens is contaminated, do not wipe it with your hands (use lens cleaning paper). - B. It was said that the magnifying power of the microscope was 100 times, and there was insufficient information to judge (the magnifying power was the product of the magnifying power of the eyepieces and the objective lens). - C. When observing, the object image is not clear, and it should not be rotated by a large margin.(If it is a coarse focus spiral, it should be used to fine-tune the fine focus spiral first). - D. Observed that the cells in different parts of the root tip are different (such as the cells in the meristematic zone are small and tightly arranged, and the cells in the mature zone have root hair and other structures). 3. The biosphere was the largest ecosystem on Earth. The environments of different regions and various organisms formed a variety of ecological systems. The correct description of the forest ecosystem is () - A. The forest ecosystem has many tall plants. - B. Rich species of animals and plants. - C. Humans do not play a dominant role in the forest ecosystem. - D. It has the ability to adjust the climate (for example, through the use of transpirations to adjust humidity, temperature, etc.). 4. The picture below is a diagram of four single-celled organisms. The correct description is () - A. Single-celled organisms can independently complete life activities (such as nutrition, breathing, secretion, etc.). - B. Not all are harmful organisms, some single-celled organisms are beneficial. - C. Not all organisms can photosynthesize (for example, Paramecium cannot photosynthesize). - D. Not all are animals (like Chrysanthemum is a plant). 5. The Chinese people had many popular poems, many of which could reflect the relationship between living things and the environment. The poem "Swallows fly in the mud, mandarin ducks sleep in the sand" reflected the influence of non-biological factors on living things. This non-biological factor is () - A. Microorganisms (does not fit the question). - B. The temperature (the sand warmth reflects the effect of temperature on the mandarin ducks). - C. Salt (does not match the meaning of the question) - D. Swallows (Swallows are living things, not non-living things). 6. In the following experiment, the correct description of the purpose of using the solution is () - A. To investigate the changes in the oral cavity of steamed buns was to verify that starch was decomposed in the oral cavity (not synthesized). - B. Exploring the production of organic matter by green leaves under light was to verify that green leaves produced starch under light. - C. Observing human oral cavity cells, oral cavity cells do not have plastids. Iodine solution is not used to observe plastids. - D. Observe the structure of the corn seed. Iodine solution is not used to observe the nucleus. 7. The following picture is a diagram of the structure of a bird egg. The blastoderm is () in the pictures (1) to (4)(Since there is no picture, it is impossible to accurately indicate which serial number represents the blastoderm, but the blastoderm is the part of the bird egg where the embryo develops). 8. Xixi wanted to invite a friend from another city to taste mutton buns and roujiamo. From the perspective of a reasonable diet, it should also be matched with the following () - A. Salad vegetables (can supplement vitamins, diet fiber, etc. to make the diet more reasonable). - B. Fried bread slices (high calories, unhealthy). - C. Roasted beef kebabs (repeated more with mutton buns and roujiamo, and barbecued food is unhealthy). - D. Rice noodles and cold noodles (mainly carbs, lacking vitamins and other nutrients). 9. In the experiment to explore the production of organic matter by green leaves under light, the geraniums were dark-treated, covered with black paper on the top and bottom sides of the leaves, and placed under the sun. The variable set for this experiment is () - A. Phosphor (not the experimental variable). - B. carbon dioxide (not the experimental variable). - C. Illumination (use black paper to block the light, the variable is whether there is light). - D. Water (not the experimental variable). 10. The nutrients we obtain from food provide substances and energy to maintain life and health. The role of the following nutrients does not match the example () - A. To provide substances, such as protein (Correct, protein can provide substances such as fatty acid to build the body, etc.). - B. Maintain health, such as vitamins (Correct, vitamins play an important role in maintaining the normal physiological functions of the body). - C. Maintaining life, such as water (Correct, water is a necessary substance for life activities). - D. To provide energy, such as mineral salt (Wrong, mineral salt cannot provide energy. The nutrients that can provide energy are sugar, fat, and protein). 11. In the following blood vessels of the human body, the venous blood flowing is () - A. The pulmonic artery (which flows venous blood, transporting venous blood from the whole body to the lungs for gas exchange). - B. The lung vein (the artery that carries blood back to the heart after gas exchange in the lungs). - C. The main artery (the artery that carries blood from the heart to the whole body). - D. Afferent artery (blood flowing from the artery). 12. In the exam questions activity, - A. Reflex activity (conditioned reflex). - B. Not only is the nervous system involved, but other systems such as the hormonal system are also involved in regulation (such as hormone regulation affecting brain activity, etc.). - C. It was a complex reflex (conditioned reflex), a reflex formed with the participation of the cerebral hemisphere. - D. The nerve center is located in the cerebral hemisphere (not the spinal cord). 13. If you don't have good eye habits, it's easy to develop short-sightedness. What can prevent nearsightedness is () - A. Reading under strong light (not conducive to eye health, easy to hurt the eyes). - B. Do eye exercises (can relieve eye fatigue and help prevent shortsightedness). - C. Rubbing the eyes with dirty hands (unsanitary, easy to infect eye diseases, unable to prevent shortsightedness). - D. Looking at the computer for a long time (easy to cause eye fatigue, not conducive to preventing short-sightedness). 14. Xixi accidentally pricked her finger and quickly withdrew her hand. in that course of complete the action, - A. The biceps contract (not relax). - B. Relax (not contract) the triceps. - C. Bone cannot provide energy (energy is provided by the mitochondria in the cells through respiratory action). - D. Joints act as fulcrums (bones act as leverage, muscles act as power). 15. Xixi found an "ant nest" in the yard. The way ants acquired this behavior was innate. The following animal behaviors are congenital behaviors () - [A. Parroting (Learning behavior)] - B. Police dog solving cases (learning behavior). - C. Squid spraying ink (a congenital behavior). - D. An old horse knows the way (classified as learning behavior). 16. The mosquito larva, commonly known as the somersault worm, was the larva stage of the mosquito's development from egg to pupa. The creature that has the same development process as mosquitoes is () - A. Locusts (the development process is incomplete metamorphosis, different from mosquitoes). - B. Frogs (the development process is abnormal, but not exactly the same as mosquitoes). - C. Silkworm (the development process is completely metamorphosis, the same as the mosquito development process). - D. Pigeon (a bird that develops differently from insects). 17. Microorganisms (viruses, bacteria, and fungi) were inseparable from human life. The beneficial use of microorganisms by humans is () - (1) Cause disease (harmful aspects of microorganisms). - (2) Purification of sewage (beneficial aspects). - 3. Pollution of the environment (harmful aspects of microorganisms). - (4) Food production (beneficial aspects, such as yeast used to ferment bread, etc.). - (5) Production of drugs (beneficial aspects, such as the use of microorganisms to produce antibiotics, etc.) - Hence, it was 2, 4, and 5. 18. Xixi's brother found a small animal in the farmland. If Xixi wanted to understand the characteristics and structure of the animal, she should consult relevant zoological books or biological materials (since there was no more description of the animal, she could not be more specific). 19. When Xixi was flipping through the Compendium of Materia Medica, she learned that the fruit had medicinal values such as stopping diarrhea, treating various hemorrhoids, and sore throats. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>