Seek the selection of junior high school biogeography exam questions and get good points.

1. The main parts of plants absorb water are ()

A. Leaves B. Bark C. Petals D. Root tips

2. The movement mode of earthworms is ()

A. Running B. Creeping C. Walking D. Flying

3. The main place for human digestion and absorption is () < P > A. Oral cavity B. Stomach C. Small intestine D. Large intestine < P > 4. Living in water, breathing with gills, The animals covered with scales are ()

A. Tortoise B. Carp C. Dolphin D. Coral

5. The main basis for distinguishing vertebrates from invertebrates is whether there is () in the body.

a. spine B. body hair C. gills D. muscles

6. when observed under a microscope, The structure used for fixed film loading is ()

A. Coarse quasi-focus spiral B. Tablet holder C. Reflector D. Fine quasi-focus spiral

7. The largest ecosystem on earth is ()

A. Desert ecosystem B. Grassland ecosystem C. Biosphere D. Marine ecosystem

8. The method suitable for preserving fresh milk is ( )

A. Pickling method B. Dehydration method C. Pasteurization method D. Fumigation method

9. The component with the most water content in blood and related to the transport of substances in the body is ()

A. Red blood cells B. White blood cells C. Platelets D. Plasma

1. In a flower, The structures directly related to reproductive offspring are () < P > A. Petals B. nectaries C. Pistil and stamens D. Filaments and anthers < P > 11. In biological classification, The most basic classification unit is () < P > A. Boundaries B. Clans C. Families D. Species < P > 12. When people with type A blood lose too much blood, He should be given ()

blood type A, blood type B, blood type C, blood type C．AB and blood type D, blood type O

13. The diet that is beneficial to human health is ()

A. Eat more snacks and less vegetables and fruits B. Eat barbecue food from street vendors frequently

C. Drink only cola when you are thirsty. Milk tea D. Regularly quantify three meals a day and p>A． attention to balanced nutrition < P > 14. The organ that forms urine in human body is () < P > A. Kidney B. Liver C. Ureter D. Bladder < P > 15. electro luminescent was invented by studying the luminous principle of fireflies. This technology belongs to () < P > A. Bionics B. Cloning C. Heredity D. Variation < P > 16. Among the following measures, the one that can improve the quality of the population is () < P > A. Late marriage B. Late childbearing C. Less births D. Eugenics < P > 17. Baboons have leaders and division of labor. This is the main feature of which of the following behaviors () < P > A. Reproductive behavior B. Social behavior C. Predatory behavior D. innate behavior < P > 18. Which of the following structures is not included in the motor system of mammals () < P > A. Bone B. Joint C. Skeletal muscle. D. Nerve < P > 19. About the development process of insect incomplete metamorphosis, the correct statement is () < P > A. Eggs → larvae → pupae → adults B. Eggs → nymphs → adults < P > C. Eggs → adults → pupae D. Nymphs → adults → eggs < P > 2. Fuzhou Drum. Cycas belongs to () < P > A. Pteridophytes B. Angiosperms C. Bryophytes D. Gymnosperms < P > 21. It belongs to the first line of defense of human body () < P > A. Red blood cells B. Antibodies C. Skin D. White blood cells < P > 22. Among the following relatives, Your lineal blood relatives are ()

A. Uncle B. Aunt C. Father D. Cousin

23. As a chromosome carrying genetic information, It consists of () < P > A. Genes and fats B. DNA and protein C. protein and sugars D. Inorganic substances and sugars < P > 24. Among the following animal behaviors, What does not belong to learning behavior is ()

A. Monkeys can perform programs B. Parrots can imitate human speech

C. Police dogs can sniff out drugs D. Birds feed goldfish as chicks

25. When making temporary pieces of onion skins, The following steps are correct: ()

A. Wipe the glass slide with a napkin

B. Put the onion block directly under the microscope for observation

C. Touch the cover glass with water drops first, and then slowly cover it

D. Open the cover glass when dyeing, and drip the dye solution

II. Non-multiple choice questions (1 questions in this big question * * *, 1 point for each blank. Please fill in the correct answer directly in the answer sheet)

26. (4 points) Animals can carry out various activities that are beneficial to individual survival and reproduction. Please connect the following related contents.

A hatches a rabbit

B molts b frog

C hugs c locust

D suckles. D pigeon

27. (4 points) True or false (tick "√" for the right and "×" for the wrong)

() (1) There are chloroplasts in animal cells.

( )(2) Mushrooms are decomposers in the ecosystem.

( )(3) The blood vessel through which red blood cells can only pass in a single line is the artery.

( )(4) "Unintentionally inserting willows into the shade" is actually the result of plant asexual reproduction.

28. (3 points) Every second of your life, your heart keeps your blood circulating. Please answer the questions according to Figure 1.

(1) The heart is mainly composed of tissues.

(2) Of the four chambers of the heart, the thickest wall is

it can pump blood to the whole body.

(3) There is a valve between the atrium and the ventricle, which can ensure that the blood

flows in the heart ()

A. Left atrium and left ventricle B. Left atrium

C. Left atrium and right atrium D. Left atrium and right ventricle

29. (6 points) In hot summer, eating watermelon is a very pleasant thing to cool off. Please answer the following questions.

(1) The sweet juice in watermelon is stored in cells, and the nutritious pulp belongs to tissues.

(2) The fruit of watermelon is developed from pistil. Reproduction of offspring by using fruits belongs to sexual reproduction.

(3) Watermelon has various characters. The following are not relative traits: ()

A. Red flesh and yellow flesh of watermelon B. Big watermelon and small watermelon

C. Striped and non-striped watermelon skin D. Sweet watermelon and thin-skinned watermelon

(4) Someone put a young watermelon on a square basket and cultivated a square watermelon. This is an heritable variation for the following reasons: < P >.

3. (4 points) Measles and influenza A (H1N1) are highly contagious infectious diseases. In early March this year, our government vaccinated children aged -15 with measles vaccine for free. Now, influenza A (H1N1), which is rampant in Mexico, the United States and other places, has also been found in some parts of China, which has aroused the government's great attention and national prevention.

(1) Both measles and influenza A (H1N1) are infectious diseases caused by viruses. The following description of the virus is wrong: ()

A. The virus has no cell structure

B. The virus can only live in living cells

C. The virus can live independently on the culture medium

D. The virus is composed of genetic material in the shell and inside of protein

(2) People who have been vaccinated with measles have no immunity to influenza A (H1N1), which is the characteristic of human immunity.

(3) For the prevention of influenza A (H1N1), the following practices are not advisable: ()

A. Take active exercise B. Never eat pork again

C. Keep the room ventilated D. Wash your hands in time

(4) Don't panic in the face of infectious diseases. As long as we do a good job in controlling the source of infection, cutting off the route of transmission and protecting it, infectious diseases will be difficult to become popular.

31. (9 points) From a cell to a "handsome boy", we can see the wonderful changes in life.

(1) My life began with a cell. Before I was born, I lived comfortably in my mother's belly, and I could get nutrition from my mother through the umbilical cord at all times.

(2) With the first cry of "Wow", my respiratory system began to work, and one of them was the place where I exchanged gas with the outside world.

(3) As soon as I touch my mother's nipple, I will suck milk, which is a (fill in "simple"/"complex") reflex. Breast milk is so rich in nutrition that it is the main raw material for growth and cell renewal, which makes me grow up quickly.

(4) It is a phenomenon that people say that I look like my mother. However, as a boy, the sex chromosome composition in my somatic cells is.

(5) I began to grow a beard in adolescence, which is closely related to the secretion of male hormones in sexual organs. I want to exercise actively, study hard and not waste my good youth.

32. (5 points) Some students are addicted to computer online games. Is the long-term computer radiation harmful to their health? Someone did a group of experiments: healthy adult male rats were randomly divided into two groups, with 8 rats in each group. Group A is placed in front of the computer that is not turned on, and Group B is placed in front of the computer that is turned on; Other feeding conditions are the same. The experimental data obtained after 6 days are shown in Figure 3.

(1) The question explored in this experiment is: Does computer radiation harm our health?

(2) The variables set in the experiment are ()

A. The types of computer games B. Whether the computer is turned on C. The physical condition of rats

(3) Eight rats were used in each experimental group instead of one, with the purpose of.

(4) As can be seen from Figure 3 (A), computer radiation has affected the weight gain and the normal development of sperm in rats.

(5) The data shows that computer radiation for a long time is harmful to the health of rats. What is the enlightenment for us middle school students?

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33. (5 points) Fleming's discovery of penicillin in 1928 opened the history of human struggle against germs. Today, 8 years later, antibiotics are regarded as a panacea by many people. Due to the abuse of antibiotics, many "super drug-resistant bacteria" have been inadvertently cultivated. In the face of germs, mankind will face the embarrassing situation of being helpless.

(1) Antibiotics must be purchased by prescription. Is it an OTC? .

(2) Before using penicillin, patients must have a skin test, otherwise some patients will go into shock or even die because they are allergic to penicillin. Allergic reaction is the embodiment of human function.

A. Breathing B. Excretion C. Digestion D. Immunity

(3) The variation of bacterial resistance is beneficial to individual survival and easy to pass on to the next generation. Therefore, the emergence of "super drug-resistant bacteria" can be explained by Darwin's theory.

(4) Regarding the use of antibiotics, which of the following practices is correct ()

A. Take antibiotics regularly to prevent diseases B. Take antibiotics by yourself as soon as you have a fever

C. In order to cure the disease as soon as possible, increase the dosage D. Use antibiotics correctly under the guidance of a doctor

(5) Please write a propaganda slogan about "opposing the abuse of antibiotics".

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1. There are three or two peach blossoms outside the bamboo, and the duck is warmed by the spring river first.