2007 National Middle School Biology Knowledge Contest Shandong Competition Area

Junior High School Final Test Questions

Note:

1. This test is divided into Volume Ⅰ and Volume Ⅱ two parts. Volume Ⅰ is multiple choice, 70 points; Volume Ⅱ is non-choice, 50 points; *** 120 points. The examination time is 120 minutes. At the end of the examination, return the question paper and answer card together.

2. Before answering the paper, be sure to fill in your city, county, school, name, and pass number in the sealed line.

3. Volume Ⅰ after each question selected answers, with 2B pencil will be selected answer serial number painted in the corresponding position of the answer card, such as the need to change, you must use an eraser to wipe clean, and then re-coated with other answers. The answer to each question in Volume II is filled in directly in the space provided in the question paper.

Volume Ⅰ (multiple choice ***70 points)

I. Single choice questions: this question includes 1 to 40 small questions, each small question 1 point, ***40 points. In each sub-question of the four options, only one option meets the requirements of the topic.

1. AIDS is known as the "killer of mankind", which is caused by the AIDS virus and spread mainly through the blood, so far mankind has not found a cure for the disease. Theoretically, the development of a vaccine and vaccination is the best countermeasure to eradicate the disease, the role of the countermeasure is

A. to control the source of infection B. to protect susceptible C. to cut off the transmission route D. to explore the structure of the virus

2. Below are several students on the significance of the excretion of the narrative, you think it is incorrect

A. metabolic wastes out of the body B. regulating the balance of water and inorganic salts in the body, the body's water and inorganic salts. B. Regulate the balance of water and inorganic salts in the body

C. Maintain the stability of blood sugar in the body D. Maintain the normal physiological function of tissue cells

3. In the laboratory class, the teacher will be two just made permanent mounts and two written "spherical bacteria" and "yeast" labels to you. The teacher gives you two freshly made permanent mounts and two labels stating "Spherical Bacteria" and "Yeast" and asks you to put the labels on correctly with the help of a microscope. Your basis is

A. the presence or absence of genetic material B. the presence or absence of chloroplasts

C. the presence or absence of a well-formed nucleus D. the presence or absence of a cell wall

4. The following ① to ⑤ are a few steps in the use of the microscope to observe the field of view under the microscope to the image from the left to the right in the figure, the correct procedure is

①turning the coarse focusing screw; ② adjust the aperture; ③ turn the fine focusing screw; ④ turn the converter; ⑤ move the slide specimen.

A.①→②→③→④ B.④→⑤→③→②

C.②→①→⑤→④ D.⑤→④→②→③

5. Fires are often a great danger to forests, but in some countries there are limited artificial fires in forests of frigid zones to manage forest resources. The main purpose of this artificial burning is

A. to eliminate forest pests and diseases B. to stimulate the germination of tree seeds

C. to accelerate the decomposition process of the material of the debris D. to improve the water storage capacity of the forest

6. 1920, India found two "wolf children", the youngest of which is 8 years old, after nine years of scientific researchers to find out that the wolf children, the youngest of which is 8 years old. In 1920, two "wolf children" were discovered in India, the youngest of which was 8 years old, and after 9 years of hard training by researchers, when he was 17 years old, his intelligence was only at the level of a 4-year-old child. This is due to what structure of this "wolf child" is not well developed?

A. spinal cord B. cerebellum C. brain D. brainstem

7. birds than fish, amphibians, reptiles, complex and higher, in terms of reproduction

A. in vitro fertilization B. oviparous C. viviparous, breastfeeding D. nesting, incubation, brood rearing

8. a class of students are in physical education class, the male running 1500 meters when the energy required by the The primary and final energy sources are, in order,

A. solar energy, sugar B. sugar, fat C. fat, solar energy D. sugar, solar energy

9. The appendix, which is quite well developed in other mammals, remains in the human body, and this evidence of evolution belongs to the category of

A. fossil evidence B. comparative anatomical evidence

C. embryological evidence D．Molecular biological evidence

10．In patients with severe malabsorption in the small intestine, nutrition can be provided by intravenous administration of total nutrient solution. The composition of the total nutrient solution must not contain

A. protein B. glucose C. inorganic salts and vitamins D. amino acids

11. A watermelon has many seeds depending on the fact that

A. there are many ovaries in a flower B. there are many pistils in a flower

C. there are many ovules in an ovary D. there are many stamens in a flower

12．The following groups play an important role in the relative stabilization of blood glucose concentration:

1．Pancreatic islets,

2．Liver,

3．Stomach,

4．Balloon,

5．Tubules of kidneys.

A. ① ② ③ B. ① ② ⑤ C. ② ③ ④ D. ② ③ ⑤

13. Field planting corn is often found to have a lack of grains on the cob. The following explanations are correct

A．Some corn flowers do not have ovules in the ovary

B．Maize is an anemophilous flower, and pollination is affected by days of rain when it blooms

C．Some kernels in the ears of maize are eaten by pests just after they are formed

D．Maize is a dioecious plant, and the lack of pollen results in the absence of grains from the cob

14． p>14. In the process of bud development, the structures related to the formation of new shoots are

A. leaf primordium and bud primordium B. growth point and bud primordium C. growth point and leaf primordium D. growth point and young leaves

15. "The grass is so small that it is unbearable to step on it". Set these tips to remind people not to trample the grass, because often walking on the lawn will cause soil condensation, which affects the growth of grass. The main reason why soil compaction affects plant growth is

A. lack of inorganic salts in plants, which affects growth B. lack of water in plants, which affects photosynthesis

C. lack of water in roots, which affects growth D. lack of air in roots, which affects respiration

16. Which of the following activities does not cause a shortening of the food chain?

A. Deforestation B. Lake cultivation C. Grassland reclamation D. Fish farming in rice paddies

17. In practice, the plants that often use nutrient organs for reproduction are

A. tomatoes and watermelons B. sweet potatoes and potatoes C. peanuts and rice D. radish and cabbage

18. Investigation of algae in seawater reveals that green algae grow in shallow water and brown algae in slightly deeper water. The green algae grow in shallow waters, brown algae in deeper waters, and red algae in deeper waters. The main factors affecting the distribution of algae in the ocean is

A. sunlight B. temperature C. salt content of seawater D. seawater oxygen content

19. Proof of the "light conditions under the release of oxygen from green plants" experimental setup, to prove that "the light is a condition of photosynthesis" experiments. Photosynthesis conditions" experimental setup are the right figure

A. A and B, A and D B. A and C, A and B

C. A and D, B and C D. A and B, B and C

20. Several students in the investigation of the "pathway of water into the body of the plant" reached the following conclusion. "They came to the following conclusions. Which is incorrect

A．The conduits of roots and stems are connected

B．The direction of transport of water and inorganic salts in the conduits is the same

C．The root tips bear a large number of root hairs, which enlarges the absorbing area

D．The direction of transport of water and inorganic salts in the conduits is the opposite direction

21．Investigation of " The effect of light on the life of the yellow mealworm" experiment, the general method of research is

A. simulation method B. survey method C. observation, experimental method D. data analysis method

22. 4 students to participate in the long-distance running events, they have prepared some of the food to replenish energy. A: sugar; B: beef jerky; C: fruit; D: cream cake. Which student prepared the most practical food?

A. A B. B C. C D. D

23. If an ecosystem has 4 species of organisms, A, B, C and D, and forms a food chain. At a certain time, the total amount of organic matter contained in each of these four species is measured as shown in the figure on the right. Over a period of time, if the number of B increases, it will cause

A. the number of A, C and D to increase

B. the number of A and D to increase, and the number of C to decrease

C. the number of A and D to decrease, and the number of C to increase

D. the number of A to decrease, and the number of C and D to increase

24. In the process of circulation of blood, its composition tends to change under certain conditions. The blood is often changed in the process of circulation. A. The amount of urea in arterial blood is much less than that in venous blood

B. The amount of nutrients in venous blood must be less than that in arterial blood

C. The amount of oxygen in arterial blood is not necessarily higher than that in venous blood

D. The amount of red blood cells per milliliter of blood increases as the blood flows through the glomeruli

25. A, B, C, D, E five people traveling in an accident, A because of the injury and the urgent need for blood transfusion, blood type identification results are shown in the table below. According to the table, blood donation should be considered first

A B C D E

Anti-A serum - + - - - +

Anti-B serum + - + - - +

Note: "+" indicates erythrocyte agglutination and "-" indicates non-agglutination of erythrocytes.

A. E. B. D. C. C. D. B

26. A sighted student stood in front of the waiting room, first saw a car parked in the distance, and then came to him head-on. The diagram reflects the change in the curvature of the student's eye lens as he gazes at the car.

27. Which of the following would produce the most convincing conclusions in a test to see if a new drug would be effective in treating cancer in mice?

A. Injecting many mice with cancer with the drug and determining the number of them cured

B. Injecting the same number of rats and mice with cancer with the drug and comparing the number of cures

C. Injecting many mice with cancer with different doses of the drug and determining the number of mice cured in each group

D. Injecting many mice with cancer with the drug and determining the number of cures in each group

D. Injecting many mice with cancer with the drug and determining the number of cures in each group. D. Injecting many mice with cancer with drugs and injecting the same number of mice with cancer with an equal amount of saline, and comparing the number of mice restored to health in the two groups

28. You can see that the following are hormone-regulated

A. A violent cough caused by food entering the trachea by mistake. B. Salivation when seeing acidic apricots

C. A protruding nodule of the throat of a male student at puberty. D．When a bright light comes, close your eyes quickly

29．Developed countries such as the United States and Japan have banned the use of phosphorus-containing detergents in their own countries, but their companies such as Procter & Gamble, Henkel, Kao and others have banned the use of phosphorus-containing detergents in their own countries. "and other companies in China, but a large number of marketing, manufacturing phosphorus-containing detergents, which will bring harm to China's environment is

A. land sands B. deterioration of water quality C. air pollution D. increase in garbage

30. in the production and observation of human oral epithelial cell mounts, the following narrative is correct

A. in the field of view of blood cells is likely to be a toothpick puncture blood cells is most likely a toothpick piercing the wall of the mouth

B．When observing the mount, the field of view should be darkened using a concave mirror

C．In order to prevent air bubbles from forming, the coverslip should be placed flat

D．If the cells in the field of view crumple, it is probably because of the low concentration of saline

31．The fossil evidence suggests that there are many species of organisms which survive only a fairly short time and then go extinct. The fossil evidence shows that many species of organisms survived for only a short time before becoming extinct. The best explanation for this phenomenon is that

A. there was a lack of heritable variation that could adapt to environmental changes B. environmental conditions changed very drastically

C. human beings used their knowledge of genetics to modify these organisms D. their ability to reproduce was so low that they became extinct

32. Which natural phenomenon in the living world is correctly explained by the doctrine of natural selection?

A．Organisms have a strong ability to reproduce B．The interrelationship between heredity and mutation

C．Individual organisms are getting taller and taller D．The diversity and adaptability of organisms in nature

33．In our daily life, we come into contact with germs and viruses, but we usually don't get sick. This mainly depends on

A. the barrier effect of the skin B. the immune effect of the immune organs

C. the bactericidal effect of saliva D. the phagocytosis of phagocytes

34．Which of the following is the biggest difference between asexual reproduction and sexual reproduction?

A. Whether it produces germ cells B. Whether it requires the union of germ cells of both sexes

C. Whether the offspring are sexed D. Whether the parents are sexed

35. In recent years, the cloning technology has been developing rapidly, and many kinds of organisms have been cloned successfully. But many countries have legislated against human cloning. The main problems involved in human cloning are

A．Human cloning is too complicated B．Human ethical and moral problems

C．It will have an impact on the existing medical treatment D．It will affect the diversity of genes

36．The cat is interested in the pieces of paper when it is hungry; after it is full of food, it can't react to the sound of mice in time. This shows that

A. the cat's behavioral stimulus comes from inside the body B. the nervous system of a well-fed cat is inhibited

C. the rat's cry is not a behavioral stimulus for the cat D. the cat's behavior is a result of internal and external stimuli*** acting together

37. The following are related to the reproductive behavior of the cat

A. the "peacock" and the "peacock" are the same as the cat's behavior. A. The peacock and the dragonfly B. The hare's ears are always pricked up to listen to its surroundings

C. Carp in a small river are feeding in schools D. Two dogs fight over a bone

38. The Human Genome Project (HGP) is a project carried out by scientists from six countries. The Human Genome Project" is to locate genes on all human chromosomes. Please point out that the number of human chromosomes to be measured by this project should be

A. 46 B. 23 C. 24 D. 22

39. The following accounts about the significance of animal locomotion are incorrect

A. Locomotion enables animals to improve their ability to adapt to their environments. B. Locomotion enables animals to take the initiative in obtaining food quickly

C. Locomotion enables animals to fight for bones and to fight for food. C. exercise enables animals to actively escape from enemies D. exercise is conducive to the production of heritable variation

40. pea immature pods green to yellow is a dominant trait, a heterozygous green pods varieties of pea flowers artificially pollinated with yellow varieties of pea pollen, the immature pods of this pea will be the color of the

A. all green B. all yellow

C. green, yellow half D. green and yellow pods for 3:1

Two, multiple choice questions: each question at least two options meet the requirements of the topic. Each sub-question 2 points, *** 30 points. Multiple choice, omission, wrong choice are not scored.

41. When walking in the shade, grassy forest roads, will feel the air especially fresh and moist, then you will think of what this is the role of green plants to improve the quality of air?

A. photosynthesis B. transport C. respiration D. transpiration

42. when people from 25 ℃ into the environment of 10 ℃, there will be physiological reactions are

A. body temperature decreased B. slow brain response C. surface vasoconstriction D. increase in oxygen consumption

43. the following measures, the principle of respiration is utilized

A．Low-temperature storage of fruits and vegetables B．Drainage of stagnant water from farmland after heavy rains

C．Drying wheat and corn in the sun before they are put into the silo D．Filling closed silos with nitrogen gas

44．The following statements are incorrect

A．All birds incubate their eggs and brood their chicks B．A bird's egg is an oocyte

C．A hen's egg is not the same as the egg she lays

D．A hen's egg is not the same as her egg. A. Not all eggs laid by hens hatch chicks D. Newly hatched young pigeons can walk

45. A peanut seed sown in the soil and germinating is likely to undergo the physiological activity of

A. absorbing water and inorganic salts B. cell division and cell differentiation

C. oxidizing and decomposing organic matter, releasing energy D. synthesizing inorganic matter into organic matter

46.

A. Eating raw eggs is good for nutrition B. Drinking yogurt should be sterilized by boiling

C. Sunning bedding can kill bacteria D. Breastfeeding can enhance the infant's resistance to disease

47. The following physiological activities are affected by the opening and closing of stomata

A. Water transport B. Inorganic salt transport C. Photosynthesis D. Evapotranspiration C. photosynthesis D. transpiration

48. The main principle underlying the prevention of food spoilage is

A. to kill microorganisms in the food B. to minimize the water content of the food

C. to kill the so-cells in the food D. to inhibit the growth and reproduction of microorganisms in the food

49. The following descriptions of mammalian locomotor systems are correct

50. A. The bony links are also called joints

B. A piece of skeletal muscle generally consists of two parts: the tendon and the muscle belly

C. The mammalian locomotor system consists of bone, bony links, and skeletal muscle

D. The structure of a joint consists of articular cartilage, joint capsule, and joint cavity

50. A. The edible part of the apple develops from the ovule B. The shell of the peanut develops from the peridium

C. The cotyledon of the soybean develops from the fertilized egg D. The shell of the watermelon seed develops from the wall of the ovary

51．The small intestine is the main organ of the human body for digestion and absorption, and the characteristic that is compatible with this function is

A The small intestine is connected to the duodenum above and to the large intestine below

B. The small intestine is lined with digestive fluids such as pancreatic fluid, intestinal fluid, and bile

C. There are circular folds in the mucosal surface of the small intestine and there are a lot of small intestinal villi

D. The wall of the small intestinal villi, the wall of the capillaries, and the wall of the capillary lymphatics are all composed of a layer of epithelial cells

52. The following statements about "Producers are the main components of ecosystems", the correct understanding is

A. The respiration of producers will decompose organic matter into inorganic matter, promoting the cycle of material

B. Producers can synthesize inorganic matter into organic matter, providing nutrients for other organisms

C. The energy flowing in the ecosystem comes entirely from the producers. C. The flow of energy within the ecosystem is all derived from the energy fixed by the producers

D. The transpiration of green plants reduces the ambient temperature

53. If the main vein of the leaf A of the plant on the right is cut off, the two sides of leaf B correspond to the sticking of opaque tin foil. After dark treatment for one day and night, it is placed in sunlight for 4 hours. Remove the two leaves, after decolorization and treated with iodine solution, found that part A is brownish-brown, part B is blue-black, and part C is not blue-black. The above experiment proves that photosynthesis requires

A. carbon dioxide B. sunlight

C. water D. chlorophyll

54. The bristles on the body of an earthworm help it to move in its burrow, the mucus on its body surface helps it to respire in the soil, and the earthworm's activities of burrowing and feeding make the soil looser and richer. This shows

A. organisms depend on a certain environment for survival B. organisms also affect the environment in their life activities

C. organisms can adapt to a certain environment D. environmental factors affect the behavior of animals

55. The following figure shows a sketch of the food web of an ecosystem.

A. In an ecosystem, food chains are intertwined to form a food web because many kinds of organisms occupy different trophic levels in different food chains

B. Only two components of the ecosystem are represented in the diagram, and the components that are not represented are the abiotic components and the decomposers

C. Theoretically, the biotic components that are indispensable for maintaining an ecosystem are the producers and the decomposers

D. Environmental factors affecting animal behavior

C. The diagram below shows the food web of an ecosystem. D. The food web consists of six food chains, and the eagle is the highest trophic level

The 2007 National Biology Knowledge Contest for Secondary School Students in Shandong

Junior High School Final Test Questions

Volume Ⅱ (non-selective ***50 points)

Question No. 56 57 58 59 60 61 62 63 Total Points

Score

Three, non-selective questions: this major question includes 56 to 63 subquestions, ***50 points.

Score Rater

56. (6 points) There are three test tubes A, B and C, in which starch paste, egg white and vegetable oil are put respectively. Please analyze and answer the following questions:

(1) A test tube drops of iodine solution was color, and then add enough saliva to fully oscillate in 37 ℃ warm water, 10 minutes later, the color change in the test tube is .

(2) B test tube add the right amount of ( ), fully oscillated and placed in 37 ℃ warm water, half an hour after the egg white is gone.

A. Saliva B. Gastric juice C. Bile D. Water

(3) C test tube add appropriate amount of small intestine liquid, fully oscillated and placed in 37 ℃ warm water, 1 hour after the liquid in the vegetable oil is gone. The reason is .

(4) If the 37 ℃ water is changed to 5 ℃ water to repeat the experiments (2) and (3), B, C two test tubes can appear the above phenomenon? The reason is .

Score Rater

57. (5 marks) The following table is part of the instructions for "Panlangen Punch", please read it carefully and answer the questions:

(1) Xiao Fang and Lan have different opinions about buying "Panlangen Punch". Xiao Fang and Xiao Lan have different opinions about the purchase of Banlangen. Xiao Fang says, "You can't buy it without a physician's prescription." Lan says, "It's an over-the-counter medicine, so you can buy it yourself." Which of the two of them has a valid argument? . The reason is

.

(2) Xiaojun accidentally rubbed his skin and immediately made a packet of Banlangen punch and drank it when he got home, what was wrong with what he did? _____________________________________.

(3) Xiao Li heard someone say, "Chinese medicine has no side effects." In order to prevent colds, he drinks Banlangen punch every day. Is this practice scientific? ___________. Give your reasons

.

Score Rater

58. (8 points) Observe the figure below and analyze and answer the following questions:

(1) [②] indicates the exchange of gases between the alveoli and the outside world, and the process is realized through. The process of [③] is realized through.

(2) The blood cells that transport oxygen in the blood are the blood cells that carry oxygen to all parts of the body through the process of [④], and then enter the tissue cells through gas exchange for the tissue cells to carry out the role of decomposition of organic matter and release of energy.

(3) The parts of the human body that consume oxygen and produce carbon dioxide are [ ] in the figure.

(4) If some protein and more red blood cells appear in a person's N, the site of the lesion is; if glucose often appears in the person's N, the person may be suffering from the disease, which is usually treated by the method.

Score Marker

59. (6 marks) A student designed the following experimental setup (i) and (ii) in order to study the effects of certain environmental factors on photosynthesis and respiration. After adding a small amount of water (corresponding to point a in Figure (iii)) to the seed bottle by the funnel, the measured seed respiration and the intensity of plant photosynthesis change curve is shown in Figure (iii) below. Please analyze and answer according to the figure:

(1) The reason for the rise of curve ab is; the reason for the rise of curve cd is .

(2) The curve tends to a horizontal state after point d, indicating

.

Score Rater

60. (5 points) the following table 1 is a school biology extracurricular activities group of artificial incubation of frog eggs in the experimental record table (with the same size of the container, filled with an equal amount of water, incubation time is the same). Please answer:

Table 1 Experimental record of artificial incubation of frog eggs

Item Group Water source Water quantity (mL) Water temperature (℃) Number of frog eggs Number of tadpoles hatched

A Pond water 500 23～25 250 245

B Tap water 500 16～18 250 65

(1) From the table l, the factors leading to the lower hatching rate of group B may be . The factor that may be responsible for the lower hatching rate in group B is .

(2) A student thinks that the experiment should be done according to the design shown in Table 2:

Table 2 Record of the experiment on artificial incubation of frog eggs

Item Group Water Source Water Quantity (mL) Water Temperature (℃) No. of Frogs' Eggs No. of Tadpoles Incubated

A Pond Water 500 23-25 250

B Pond Water 500 16-18 250

C Tap Water 500 16-18 250

C Tap water 500 23-25 250

D Tap water 500 16-18 250

Prediction and analysis of the results:

① If the hatching rate of group A is higher compared to group B, and group C to group D, it means that the hatching rate of group A and C is higher

.

② Group A is compared with Group C and Group B is compared with Group D. If the hatching rate is higher in Groups A and B, it means

.

③ Comparing the experimental schemes in Table l and Table 2, the better one is . The reason is

.

Score Marker

61.(6 marks) The diagram below shows the breeding process of a transgenic super rat. In this method, a rat growth hormone gene is introduced into the fertilized egg of a mouse, resulting in the birth of a transgenic mouse that grows two to three times faster than an ordinary mouse and is one times larger than an individual. Answer the following questions:

(1) The technique utilized in the above research process is called

technology.

(2) Figure B shows that a fertilized egg that has acquired the rat growth hormone gene is injected into a mouse, and you think the site of injection should be . Eventually the fertilized egg develops into a new individual within the mouse

.

(3) In this study, the trait being studied is , and the gene that controls this trait is .

(4) The acquisition of transgenic super mice shows that the relationship between traits and genes is .

Score Rater

62. (7 marks) In 2007, abnormal weather has appeared all over the world, highlighting the serious trend of global warming, the main reason for which is related to the imbalance of the carbon cycle. The figure below shows the pattern of carbon cycle in the ecosystem, please answer the following questions according to the figure:

(1) Carbon in nature mainly exists in the atmosphere in the form of

.

(2) ① in the diagram refers to , and ② in the diagram refers to .

(3) The biological species involved in process ⑤ are

, and its role in the carbon cycle is

, which can be expressed by the reaction equation

.

(4) Because the carbon cycle is global in nature, the United Nations has established the Kyoto Protocol to slow down the emission of carbon dioxide gas. According to the analysis of the figure, the main cause of global warming is

.

Score Rater

63. (7 points) just harvested corn seeds piled up a day after the heat, a student that this is the corn itself respiration of the heat emitted. Design an experiment to investigate the source of the heat in the pile of corn seeds based on the lab materials and apparatus provided below.

(1) Experimental principle:

Biological respiration in the form of heat dissipation of energy can be measured by a thermometer, the more vigorous respiration, the more heat dissipation, the higher the thermometer reading.

(2) Experimental materials and apparatus:

Freshly harvested corn seeds, transparent warm cups of the same size, thermometers and cotton, other utensils.

(3) Experimental steps:

①

;

②

;

③

;

④ .

(4) Expected results of the experiment and draw conclusions

① Expected results of the experiment: .

② experimental conclusion: