I'll choose (20 small questions in this question, 2 points for each small question, * * * 40 points).

1. Do you like science? Do you think the basic way to enter the scientific community and learn scientific knowledge is ()?

A. Accumulate achievements and discover laws B. Collect information and write papers.

C. read and study, and do your homework carefully. D. Observe and experiment carefully.

2. The conversion of the following units is correct ()

A. 180 sec = 180 sec×1/60 = 3 min B.1.8 =1.8×1000 =18000.

c . 0.5 = 0.5kg× 1000g = 500d . 0.556 l = 0.556 x 1000ml = 556ml。

Xiao Ming measured the length of the same object five times with a scale with the smallest scale of millimeters. The measured values at each time are: 2.42cm, 2.43cm, 2.42cm, 2.44cm and 2.46cm. Do you think the measured value of this object should be ()?

A. length 2.42 cm, width 2.434 cm, width 2.43 cm and depth 2.44 cm

4. The following are some operations of measuring liquid with a measuring cylinder, of which () is incorrect.

A. When the measuring cylinder is placed on a lower table, it is not convenient to observe the reading. Lift the measuring cylinder and read the reading parallel to the line of sight.

B when reading, keep the line of sight level with the lowest point of concave liquid level in the measuring cylinder.

C. Pour the liquid into the measuring cylinder, and when the liquid approaches the scale, use the dropper to drop the liquid into the measuring cylinder.

D. First, choose a measuring cylinder with appropriate range and put it on a stable desktop, so that the scale line of the measuring cylinder faces you.

5. Regarding the adjustment of the pallet balance, there are the following steps: ① Adjust the balance nuts at both ends of the balance. ② Place the balance on the horizontal plane ③ Move the stroke code to the zero scale line ④ Add or subtract weights or move the stroke code to balance the balance ⑤ Put the weighed object on the left board ⑤ Read it. The correct order is ()

A.②③⑤⑥b .①③②⑤⑥c .①②④⑤③⑥d .①③④②⑤⑥

6. When adjusting the balance beam of the tray before weighing, the pointer is biased to the left of the dial, which should be ().

A adds weight on the right board, and B adds weight on the left board.

C move right nut d move left nut.

7. In the process of observing cells with a microscope, the coarse quasi-focus screw should be turned first to lower the lens barrel. The purpose of looking at the objective lens from the side is ().

A. in order to make the microscope good at illumination

B lower the objective lens to an appropriate height, so that the observed object is just aligned with the objective lens.

C. prevent the objective lens from contacting the slide and causing damage.

D, lowering the objective lens to the height where the image of the object can be seen clearly.

8. There is a thermometer. When its glass bubble is immersed in ice-water mixture, the height of the mercury surface in the tube is 3 cm, and when its glass bubble is immersed in boiling water, the height of the mercury surface in the tube is 28 cm. If you use this thermometer to measure the temperature of a glass of water, the mercury level in the thermometer is 8 cm, then the actual temperature of this glass of water is ().

A.20 degrees Celsius B.32 degrees Celsius C. 24 degrees Celsius D.36 degrees Celsius

9. When a classmate was using a microscope, he found a big stain on the mirror. He observed it directly without cleaning it. Then the following situation may occur: ()

A. There will be a big black spot in the visual field B, and the visual field will be very dark.

C. the field of vision is very dark. D. it's all possible.

10. To measure the quality of seals, the following methods can be used ().

A. Measure the mass of 100 identical stamps, and then divide by 100.

B: The stamps are too small to be weighed with a balance.

C. measure a stamp directly.

D. Measure the total mass of nuts and seals, and subtract the measured mass of nuts.

1 1. The structure .......................................................... () that you don't think exists in garlic root cells.

A, cell wall b, cell membrane c, chloroplast d, nucleus

12. The following are fruits ()

A. cones of Korean pine; B. watermelon seeds; C. ginkgo biloba; D. rice grains

13. The flora with differentiation of roots, stems and leaves but propagated by spores is ................. ().

A. algae, bryophytes, ferns, seed plants

14. The following organisms belong to prokaryotes ().

A. Chlamydomonas; B. ganoderma lucidum; Yeast; Lactobacillus.

15. The following plants that cannot reproduce with seeds are ()

A. Pinus massoniana; B. viviparous crest; Platanus acerifolia; Ginkgo biloba

16. A group of students found some moving 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 can grow and reproduce. B. can breathe. C. it will shrink into a ball when touched. D. small and green.

17. Some students classified wheat, pear and corn as one class, and kelp, cucurbitaceae and ferns as one class. His classification is based on ().

A. Rooted or rootless B. Aquatic or terrestrial

C. With or without seeds D. With or without stems and leaves

18. Compared with animal cells, the following are the unique structures of plant cells: ................... ().

① Cell wall ② Cell membrane ③ Cell nucleus ④ Vacuole ⑤ Cytoplasm ⑤ Chloroplast.

A.②③⑤ B. ①④⑥ C. ①②③ D. ④⑤⑥

19. To study the relationship between microbial growth and humidity, the following () devices should be selected.

A 、( A)(B) B 、( A)(C)、D 、( A)(B)(C)

20. A classmate's research study topic is "Exploring the factors that affect the growth and reproduction of bacteria". In the process of cultivating bacteria, he found that around some bacteria (R), the growth and reproduction of other bacteria were inhibited. He inoculated R bacteria into a special culture medium for culture. After a period of time, he removed the R bacteria and used this culture medium to cultivate other bacteria. As a result, other bacteria still cannot grow and reproduce on this medium. According to the above materials, what do you think is the possible reason why other bacteria can't grow and reproduce around R bacteria ()

A.r bacteria occupy the living space of other bacteria.

B.r. bacteria devoured other bacteria.

C.r bacteria produce substances that are not conducive to the survival of other bacteria.

D.r. bacteria are more likely to absorb substances in the culture medium.

Second, I'll fill it in (this topic is ***8 small questions, 65438+ 0 points in each box, ***30 points).

2 1. According to the cell number of each bacterium, the bacterium belongs to _ _ _ _ _ _ _ _ _ _ _ _ _; From the perspective of cell structure, because bacteria have no nucleus, they belong to _ _ _ _ _ _ _ _ organisms; From the morphology of bacteria, bacteria can be divided into _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

22. Human skin can be divided into epidermis, dermis and subcutaneous tissue, among which epidermis belongs to _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

23. At the stage of cell division, the most striking thing is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

More than 300 years ago, an English scientist named robert hooke observed cork with his carefully improved microscope and found honeycomb cells, which was the beginning of human understanding of the basic structure of plants. In fact, what Hooke saw at that time was only the shell of plant cells-but he knew nothing about the subtle structure inside the cells. 1In the 1940s, German scientists finally found that although animal cells have no cell walls, their nuclei are the same as those of plant cells, so they put forward the cell theory, that is, the basic unit that constitutes animals and plants is.

25. A microscope, with three eyepieces of 5×, 10×, 12.5× and two objective lenses of 10× and 40×, has a maximum magnification of times and a minimum magnification of times. Generally, when using a microscope, first select (fill in high-power lens and low-power lens) and then use (fill in high-power lens and low-power lens). When switching from a low-power lens to a high-power lens, the visual field will be (brighter, darker, unchanged), the number of cells will be (more, less, unchanged), and a single cell will be (bigger, smaller, unchanged).

26. When observing the paramecium with a microscope, it was found that the paramecium originally located in the center of the field of vision was moving to the upper left, so the slide should be moved to. When observing, if the object image is blurred, it should be adjusted.

.

27. Thermometers are made by using the principle of liquids such as mercury and alcohol.

28. If a bag of 3kg water is carried into space by Shenzhou 5 spacecraft, the quality of this bag of water will be _ _ _ _ (bigger, smaller, unchanged). If this bag of 3kg water is put into the refrigerator, the mass of ice formed is _ _ _ _ _ _ _ _ _ _ (equal to, greater than or less than).

29. It's time for the sports meeting again. Scientific and accurate measurement of referees in sports meetings can reflect the spirit of sports justice. In the long jump competition, when the referee uses a tape measure to measure the competition results, if the tape measure is pulled too tightly, the measured value will be lost. When we use a measuring cylinder, if we look down when reading, then the reading will be. (Too big, too small, unchanged, it is possible)

Third, I will look at the pictures (this is entitled ***6 small questions, each grid 1 point, * * *1point).

30. Look at the picture below and answer: The minimum scale in the picture is, and the block length is.

3 1. A classmate measured the volume of an alloy block, and the measurement result is shown in the upper right. In this way, the volume of water in the measuring cylinder is _ _ _ _ _ milliliter, and the volume of the alloy block is _ _ _ _ _ _ cubic centimeter.

32. As shown in the figure, it is an ordinary thermometer with a range of: The thermometer in the picture shows that.

Title Figure 3 1

33. Use the adjusted balance to measure the mass of the object, the weight used and the wandering code.

The position is as shown on the right, so the mass of the object is

34. In the microscope, observe the cells with a 5x eyepiece and a10x objective lens, as shown in the figure below. If you use10x eyepiece and 40x objective lens, you will see a cell.

35. The mechanical stopwatch on the right shows minutes and seconds.

Four, I can use (***8 points)

36. A. Point out which of the following groups of organisms belongs to different biological categories from the other two groups of organisms, and give the reasons: (65438+ 0.5 points per grid, ***6 points):

[Example] Giant salamander, frog and grass carp

A: Grass carp is a kind of fish, while giant salamander and frog belong to amphibians.

(1) Goose, bat and pigeon

A:

(2) Chinese alligators, cobras and sharks

A:

(3) Porphyra, kelp and ferns

A:

(4) Radix Rehmanniae, Ginkgo biloba and peach trees

A:

B, please fill in the following search form, and choose the biological name from question A: (0.5 points for each blank, ***2 points).

plant

Sheep teeth

Seedless plant

seed plant

Bryophyte plants

①

gymnosperm

②

Ocean zone

③

④

Peach (tree)

Braking fern

V. Let me explore (this question is ***3 small questions, 2+5+5, *** 12 points)

37. A pot of jasmine on the balcony died. "Why did this flower die?" Xiao Ming put forward many hypotheses about the cause of Hua Er's death. Please also put forward several hypotheses (at least two) about the cause of flower death.

Suppose1:_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Hypothesis 2:

38. A study group asked such a question: "What is the relationship between people's pulse and exercise?" To solve this problem, they put forward two conjectures: (1) the pulse speed is related to exercise; (2) Pulse has nothing to do with exercise. Which guess is correct? The students in this group designed the following experiments: After three students were at rest, skipping rope and running at 100m, their pulse times within 1min were measured respectively. The measured data are as follows.

(full name)

resting state

After skipping rope

After running at 100 meters,

Binbin Wang

82

Eighty-nine

98

Li Jin

90

90

108

Ding Junjie

Seventy-eight

88

96

(1) Which guess do you support for the inductive analysis of the data?

(2) What conclusions can you draw from the above data?

(3) What steps does the research study group follow to conduct scientific inquiry? The process of his experimental exploration is roughly as follows: →→→→→→→ Design the experimental scheme →→→ Test the hypothesis.

39. Now I'll give you a small beaker of water. According to what you have learned, what data can you measure about water (please write two)? What measuring tools are needed? Please briefly describe the measurement process.

First, multiple-choice questions (2 points for each question, 40 points in total)

1, in the following, belongs to the basic characteristics of biology is ()

All living things can move quickly. All living things are made up of cells.

C. organisms can carry out photosynthesis. D. organisms have the function of metabolism.

2, the main difference between animals and plants is ()

A, can exercise b, whether it is green c, nutrition d, whether it can exchange substances with the outside world.

If someone classifies locusts, earthworms and starfish, they classify kangaroos, woodpeckers and dogs. Do you think its classification is based on ()

A, vertebrates and invertebrates B, legged and legless C, terrestrial and aquatic D, can you fly?

4, in the process of biological evolution, its larvae first get rid of the limitation of water, become a real land animal is ().

A, amphibians b, birds c, reptiles d, mammals

5, the following animals, belong to the fish is ()

A, whale b, giant salamander c, crocodile d, bighead carp

6. The most diverse and widely distributed plant in nature is ().

A, bryophytes b, gymnosperms c, angiosperms d, algae plants

7, Metasequoia compared with pumpkin, the main difference between Metasequoia is ()

A, no fruit, bare seeds B, tall woody plants.

C, forming fruits and seeds D, which are evergreen trees and do not shed leaves.

8. Among the following common plants, there is no root, but the plant with stems and leaves is ().

A, kelp B, Radix Rehmanniae C, Platycladus orientalis D, and Rhizoma Cibotii.

9, in the biological classification level, the most basic unit is ()

A, bound b, phylum c, species d, variety

10, cucumber on the market belongs to ()

A, vegetative organs B, vegetative tissues C, reproductive organs D, and protective tissues

1 1, living things will not become extinct on the earth because of biological energy ().

A, exercise B, growth C, reproduction D, response to external stimuli

12, the following insects, belong to the pest is ()

A, silkworm b, bee c, cockroach d, dung beetle

13, the juice of watermelon mainly comes from the cell ()

A, chloroplast B, cell membrane C, vacuole D, nucleus

14, Chlamydomonas, pumpkin, fern and rice belong to plants rather than animals on the basis of ().

A, can't move b, can't eat c, can carry out photosynthesis d, can carry out material exchange.

15, the following edible parts mainly belong to the fruit is ()

A, apple b, chestnut c, peanut d, soybean

16, pine and pear, the biggest difference is ().

A, whether the plant is tall; B, whether the leaves are slender as needles; D, whether the seeds are covered with pericarp.

17, the following plants in our campus are not seed plants ()

A, pteridophyte b, camphor tree c, pine tree d, peach tree

18, refers to invertebrates. ()

A, lower animals B, aquatic animals C, arthropods D, animals without backbones

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

A, can grow and reproduce b, can breathe c, will shrink into a ball when touched d, small and green.

20, whales and bats belong to ()

A Fish, Birds B, Mammals, Birds C, Mammals D, Amphibians, Birds

II. Fill in the blanks (65438+ 0 for each blank, ***60)

2 1. By observing snails, answer the following questions:

(1) You think that _ _ _ _ _ _ _ _ of snail is the most sensitive and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The moving organ of a snail is _ _ _ _ _ _ _ _.

(2) I know that snails are _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

22. The animal with the largest number of members is _ _ _ _ _, which belongs to _ _ _ _ _ _. Their bodies can be divided into three parts: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

23. The common feature of gymnosperms and angiosperms is that they both use _ _ _ _ _ _ _ to breed their offspring. The main difference is that angiosperm seeds are covered by _ _ _ _ _ _ _ _ _, while gymnosperms seeds are covered by _ _ _ _ _ _ _ _.

24, Lygodium japonicum is a foliage plant, it has pinnate compound leaves, underground stems, adventitious roots, and sporangia on the back of leaves, so it is speculated that it belongs to _ _ _ _ _ _ _ _ _ _ _.

25, seed plants can be divided into _ _ _ _ _ plants and _ _ _ _ _ plants.

26. The vegetative organs of angiosperms are _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _ _, and the reproductive organs are _ _ _ _ _ _ _ _ _ _.

27. There are many kinds of insects that are beneficial to human beings, such as: ① butterflies can spread pollen, ② mantis can catch pests, and ③ silkworms can provide human beings with raw materials for making clothes. The following beneficial insects have the characteristics of ① and ② of _ _ _ _ _ _, and ① and ③ of _ _ _ _ _ _.

A, bee b, locust c, ant d, dragonfly

28. The following three kinds of animals: cockroaches, aphids and mantis, all belong to arthropods. Please summarize the general characteristics of insects according to the information in the picture: _ _ _ _ _ _ _ _ _ _ _ _ _ _ (at least two points).

29. Complete the names of the parts in the animal cell diagram. ①________ ②_______③

(1) Cell genetic material is in _ _ _ _ _ structure in the figure.

(2) The place to control the exchange of substances between cells and the outside world is _ _ _ _ _ _ _ _.

30. According to the characteristics described by various animals in the table below, and according to the classification method in the table, please fill the following vertebrates in the appropriate spaces in the table. Animals: snakes, frogs, foxes, carp and pigeons.

It's fur outside,

Vertebral viviparous and lactation

The spine is feathered and the body temperature is constant.

The hairless epidermis outside the animal body is dry and scaly.

Things are oval and lay eggs on land.

The featherless and unstable larva breathes through the gills.

The skin is moist and adults can breathe with their lungs.

Lay eggs in water

Larval adult

Breathe through your cheeks.

3 1. The most important structure of a complete flower is _ _ _ _ _ and _ _ _ _.

32. Which of the following plant classifications belongs to? Select the number to fill in the table.

(1) orange (2) wheat (3) pine needles (4) kelp (5) laver (6) Chlamydomonas (7) tulip

(8) Corn (9) Pumpkin (10) Diqian (1 1) Rice (12) Chlorella (13) Chinese cabbage.

(14) Cycas (15) Ferns (16) gave birth to a dog's spine.

angiosperm

gymnosperm

Sheep teeth

Bryophyte plants

seaweed

33, knowledge application problem (***6 points)

A. Point out which of the following organisms in each group belongs to different biological categories from the other two organisms, and give the reasons: (65438+ 0 point per cell):

[Example] Giant salamander, frog and grass carp

A: Grass carp is a kind of fish, while giant salamander and frog belong to amphibians.

(1) ostriches, bats and pigeons

A:

(2) Porphyra, kelp and ferns

A:

(3) Pumpkin, Ginkgo biloba and litchi

A:

B, please select any one of the above biological names and fill in the following key form: (65438+ 0 for each space, ***3 for each space).

plant

Sheep teeth

Seedless plant

seed plant

Bryophyte plants

gymnosperm

Ocean zone

zucchini

lychee

Braking fern

34, reading analysis questions (65438+ 0 points per grid, ***5 points)

Not long ago, the scientific investigation team found a new animal in the forest of Africa, which has the appearance characteristics of elephant, tiger, lion, goat and cow. One of the experts pointed out in an interview with reporters: "This animal was found in a swamp in the forest. Its hoof is like a goat, its body is like a tiger, its forehead is like a lion, and its head has horns and ears, nose and beard. It eats grass and excretes yellow urine. It walks fast, but it is afraid of light. Now it is kept in an animal research center. " After the report, some people tried their best to catch this animal, sell it at a high price, watch it or eat it. Finally, it is reported that scientists have found that it belongs to an endangered animal. ……。

Please answer the following questions:

ask a question

answer

Where is the living environment of this animal?

What kind of vertebrate should it belong to?

Do you think it should be classified with tigers, lions, elephants and goats? Jane said the reason.

Catch this animal, right?

Do you agree to keep this animal in a cage to protect it?