Junior one science exam

Chapter II Observation of Biological Test Questions

Student ID _ _ _ _ _ Name _ _ _ _ _ _ Score _ _ _ _ _ _ _ _

1. Multiple choice questions (2 points× 25 = 50 points, each question has only one correct answer)

1. A group of students found some movable green spots on the grass leaves after the rain. The following statement can't be used as the basis for judging that dots are creatures ().

A.it's a little green thing. It can breathe. C. it will shrink into a ball when touched. It can grow and reproduce.

Everyone knows that pine trees and dogs are both plants and animals, so can you choose the most fundamental difference between them from the following four answers? ( )

A.pine trees lead a fixed life, and dogs can exercise. B.dogs can breed puppies, but pine trees can't.

C. dogs can make sounds, but pine trees can't. D. Dogs get nutrition by eating food, and pine trees make their own nutrition.

3. Which of the following tools can be used to observe the structure of human oral epithelial cells in the laboratory? ( )

A. high magnification magnifier B. car reflector C. astronomical telescope D. optical microscope

4. Think back to what the shape of earthworm is, and think about what this shape means to its life. ( )

A. cylindrical, suitable for drilling B. spindle, suitable for flying.

C. small balls, suitable for exercise D. rectangular, suitable for feeding.

Number of snails in this location (only)

Cement road 0

Under the stone by the sink 2 1

Wet flowerpot for planting flowers 1 1

Dry grassland 2

When studying Abiology and abiobiology, Xiao Doudou became interested in the living environment of snails and went exploring with his companions. They recorded the environment where snails were found and the number of snails (as shown in the table). According to the survey results, you can infer that the most suitable environmental conditions for snails are: ()

A. sunny B. dark and humid

C. Fresh air D. High temperature drying

6. In the rain forest of Africa, there is a flying squirrel with hair on its body, and there is a membrane between its forelimbs and its body. Will slide in the air and have a constant body temperature; Viviparous flying squirrels grow up by breastfeeding. According to the above information, try to judge what kind of vertebrate the flying squirrel belongs to. ( )

A. birds, reptiles, amphibians and mammals

7. Compare the following four animals, which one belongs to the tallest animal on the earth? ( )

A. frog B. bat C. sparrow D. crucian carp

8. Earthworms can often be seen drilling out of the ground after a thunderstorm. What do you think this phenomenon is related to which physiological process of earthworm is hindered? ()

A. digestion B. reproduction C. excretion D. breathing

9. Look at the following four common plants. Do you know which one belongs to the most diverse and widely distributed plants in nature ()

A. bryophytes gymnosperms angiosperms algae

10. Among the following common plants, the plant without roots but with stems and leaves is ().

A. kelp B. liverworts C. Platycladus orientalis D. cibotium

1 1. Find out that the correct group in the following classification is ().

A. Crucian carp, yellow croaker, dolphins and whales all belong to fish B. Frogs, giant salamanders and salamanders belong to amphibians.

Parrots, peacocks and bats all belong to birds. Snakes, earthworms and alligators all belong to reptiles.

12. In the following description, the experiment was conducted by ().

(a) Xiao Min found a small white spot floating in the pool water and observed it carefully for a long time. Is this a creature?

(c) Then take a drop of pool water, make a slide specimen, and observe it with a microscope. (d) It turned out to be a paramecium.

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13. The remarkable difference between onion epidermal cells and human oral epithelial cells is that the former has ().

A. Cell wall and chloroplast B. Cell nucleus and cell membrane

C. Chloroplast and cytoplasm D. Cell membrane and cytoplasm wall

14. (Don't do this problem) Eating more vegetables is good for your health. The following vegetables we usually eat are fruits ()

A. Chinese cabbage b tomato c mung bean d potato

15. If you are pricked, you will feel pain. This is mainly because _ _ _ _ is at work ().

A. nerve tissue B. muscle tissue C. connective tissue D. epithelial tissue

16. If the following four test tubes are placed in an incubator at 37℃, after one week, the most microorganisms grow in them ().

17. The most remarkable change during cell division is ().

A. cell color changes B. cell volume increases C. cell number increases D. chromosomes appear in the nucleus

18. The structural level of human fertilized eggs developing into fetuses is ().

A. cells → tissues → organs → systems → human bodies B. human bodies → systems → organs → tissues → cells.

C. tissue → cell → organ → system → human body D. human body → cell → tissue → organ → system.

19. The body color and posture of stick insects are consistent with the color of the surrounding environment, which is beneficial to ()

A. avoiding natural enemies is also beneficial to catching food. B. growth and response to environmental stimuli.

C. catching food, but not conducive to avoiding natural enemies D. avoiding natural enemies, but not conducive to catching food

20. The main reason for most biological extinction is ()

A. the creatures fought against each other and the weak population failed. B. Due to various reasons, the living conditions deteriorate and the habitat is lost.

C. global warming is not suitable for high temperature environment D. biological species increase and food sources decrease.

2 1. paramecium, earthworm, starfish and jellyfish belong to () respectively.

A. protozoa, annelids, echinoderms, oblate animals

B. protozoa, flatworms, arthropods, coelenterates

C. protozoa, annelids, echinoderms, coelenterates

D. coelenterates, flatworms, arthropods, echinoderms

22. The "hair" that grows when bread is moldy belongs to ()

A. bacteria, fungi, small plant protozoa

23. The tissue that can make organic matter through photosynthesis in leaves is ().

A. meristem B. vegetative tissue C. conductor D. protective tissue

24. In the human digestive system, the main place for food digestion and absorption is ().

A. Oral cavity B. Stomach C. Small intestine D. Large intestine

25. Bacterial cells are generally ()

A. Composition of cell wall, cell membrane and cytoplasm B. Composition of cell wall, cell membrane and nucleus

C. Composition of nucleus, cytoplasm and cell membrane D. Composition of nucleus, cytoplasm and cell wall

2. Short answer questions (65438+ 0 point for each blank, ***4 1 point)

26. The basic unit of biological structure and function is _ _ _ _ _ _ _ _; The complex structure of the human body is the result of fertilized eggs constantly _ _ _ _ _ _ _ _ _ and _ _ _ _.

27. In the biological world, Chlamydomonas, paramecium and other organisms are tiny and complete all life activities, which is called.

28. The main difference between animals and plants is that plants can make _ _ _ _ _ _ _ _ _ _ _ _ by themselves, but they cannot make _ _ _ _ _ _ freely and quickly.

29. According to the presence or absence of nuclei in cells, organisms are divided into _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _.

30. The tissues of human and animal bodies are divided into epithelial tissues, muscle tissues, _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _ _.

3 1. Animals are divided into beasts and beasts according to whether there are vertebrae in the body.

32. In angiosperms, flowers and seeds belong to the genus _ _ _ _ _ _ _ _ _.

33. Xiaoming bought some tomatoes from the market and made a careful analysis:

(1) He cut a tomato and a lot of juice flowed out. These juices are _ _ _ _ _ _ _ _ _ _ of tomatoes, and they come from _ _ _ _ _ _ _ in the cell structure;

(2) Take another tomato, blanch it with boiling water, tear off a thin layer of epidermis, and observe it under a microscope. It is found that the cells are closely arranged, and this layer of epidermis belongs to _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Under the microscope, the cell wall is thin and scattered, and it belongs to _ _ _ _ _ _ _ _ _ _ _ _ _ _

(3) Cut the pulp and find some white "tendons". Take a "tendon", wash off dental pulp cells, make a temporary piece, gently press it, and then observe it under a microscope. It is found that the cells are connected one by one, and there are many small holes in the cell wall in the middle. You estimate that this part of the structure may be _ _ _ _ _ _ _ _.

(4) According to the above observation, Xiao Ming draws the conclusion that tomatoes are composed of various tissues in a certain order.

34. A classmate classified rice, watermelon and pine as one category, while kelp, moss and fern as another category. His classification is based on.

35. People and crabs belong to the animal kingdom, with great differences and few similarities. Shrimp and crab belong to the phylum Arthropoda, and they have many similarities. This fact shows that the higher the classification level (fill in high or low), the more similarities (fill in more or less) between the included creatures.

36. Look at the picture and fill in the corresponding cell structure name on the horizontal line:

(1) In Figure A and Figure B, the figure of somatic cells that may be snails is _ _ _ _ _ _ _ _ _,

(2) The reason why the willow grows tall is related to [] _ _ _ _ _ _ _ _ _ _ in the cell structure;

(3) The main place of cell life activity is [] _ _ _ _ _ _ _ in the cell structure; Jiayi

(4) "The dragon begets the dragon, the phoenix begets the phoenix, and the mouse begets the cave" is a biological genetic phenomenon, and the genetic material that controls this phenomenon mainly exists in [] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

37. According to the answer on the right:

The process indicated by 1 in the figure is a cellular process.

As a result, cells. Table 2 in the figure

It shows the process of cells and the form of their results.

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38. Observation is a method of scientific inquiry. Scientific observation needs tools, and microscope is one of them.

(1) If the light is too strong, you should choose _ _ _ _ _ _ _ _.

① large aperture; 2 plane mirror; ③ Small aperture; ④ concave mirror.

(2) When observing the package with the letter "B", it is generally _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

(3) The following figure shows the visual field of the organism when it is loaded by a microscope. If the field of view A is changed to B, which direction should the load move to meet this requirement ()

A.upper right B. upper left C. lower left D. lower right

(4) The eyepiece of microscope has 10× and 20×, and the objective lens has 8× and 45×. Observed with this microscope, the maximum magnification is _ _ _ _ _.

(5) As shown on the right, a row of cells can be seen in the field of vision. At this time, the microscope lens readings are 10× and 10×. If the lens is changed to 10× and 40×, then the number of cells that can be seen in this field of vision is _ _ _ _ _ _ _.

3. Analysis and inquiry (5 points on question 39, 4 points on question 40)

39. A pot of jasmine on the balcony died. "Why did this flower die?" Xiao Doudou put forward many speculations about the cause of the death of flowers.

(1) Please guess a few (at least two) about the cause of death of Hua.

Guess: ① _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Guess: ② _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

(2) When scientists explore natural mysteries, the first step is generally: _ _ _ _ _ _ _.

(3) In order to test whether your guess is correct, you must use _ _ _ _ _ _ _ _ to test. It should be noted that the experimental group and the control group must meet _ _ _ _ _ _ other conditions besides controllable factors.

Flower pot lighting conditions temperature water

20℃ is enough for nails facing the sun.

20℃ in the shade is not enough.

40. Please use the classification method you have learned to classify the following 10 species:

Rabbits, apples, pine needles, snails, ferns, laver, crucian carp, pigeons, frogs, locusts.

Chapter II Observing the Reference Answers of Biology Test Questions

1. Multiple choice questions (2 points× 25 = 50 points, each question has only one correct answer)

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

Industrial and Commercial Bank of China

2. Short answer questions (65438+ 0 point for each blank, ***4 1 point)

26. Cell division, growth and differentiation

27. Single-celled organisms.

The nutrition campaign

29. Prokaryotes Eukaryotes

30. Connective tissue nerve tissue

3 1. Vertebrate invertebrates

32. Reproductive nutrition

33.( 1) Cytoplasmic vacuoles (2) Protect nutrition (3) Dredge organs (4)

34. Are there any seeds?

35. Not too high (or lower)

(1) A (2) E cell wall (3)D cytoplasm (4)A nucleus

37. The number of divisions increases to distinguish cells (or tissues) with different shapes and functions.

38.( 1) ② ③ (2) Open your left eye q(3)C (4)900(5)2

3. Analysis and inquiry (5 points on question 39, 4 points on question 40)

39.( 1) may be killed by the sun, may be short of water and may have pests. (2) Ask questions. (3) The experiment is the same.

Flower pot lighting conditions temperature water

20℃ is enough for nails facing the sun.

20℃ in the shade is not enough.

This is the paper I made. It's quite good. You can go to the junior high school students' question bank. )