2006-2007 final exam of last semester
Seventh grade (first grade) biology examination paper
The total score of the topic is one two three four five.
score
Time: 60 minutes, 100 points.
Fill in a sentence (fill in the correct words to make it a complete sentence, each space 1 minute, ***2 1 minute)
1, biological response to all kinds of environment.
2, if the scope of the survey is very large, it is impossible to investigate one by one, it is necessary to select some respondents as.
.
On the earth's surface, only a thin layer is suitable for living things. Scientists call this thin layer on its surface.
4. Environmental factors affecting biological life can be divided into two categories: one is called abiotic factors; The other category is
Factors.
5. In a certain area, the whole unified with it is called ecosystem.
6. When observing the slide specimen with a microscope, if the target image is located at the upper right of the visual field, the slide specimen should move in the direction that the target image moves to the center of the visual field.
7. When the producer temporarily installs the oral epithelial cells, he needs to pick up the cover glass with tweezers, so that one side of the cover glass first contacts the water drops on the glass slide, and then slowly covers the water drops. The purpose of this is.
8. The growth of organisms from small to large is inseparable from the harmony of cells.
9. The growth and development of plants begins with fertilized eggs and undergoes cell division, differentiation and stereotypes.
And then form a plant.
10, the breathing of paramecium is completed.
1 1. The virus has no structure, and its organism consists of an outer shell and an inner shell.
12. In the profile of corn seeds, after dropping a drop of iodine solution, some seeds will turn blue, which is.
13, pollination refers to the process from stamen anther to pistil.
14, DNA is the carrier of genetic information, which mainly exists in China. The fragments with specific genetic information on DNA are called.
Second, choose a choice (choose one from the crowd, you can choose 2 points for each question, ***40 points)
1 The earth is beautiful because of the existence of living things. This is an object found in a small pond. Please choose one that is all biological. ()
① Water ② Sediments ③ Small fish ④ Aquatic plants ⑥ Frogs ⑧ Stones ⑧ Microorganisms ⑧ Shells.
A ①②⑥⑧ B ①③④⑦ C ③④⑤⑧ D ③④⑤⑦
Regarding the investigation of biological species, the following specific steps are given. Please line up in the correct order () ① Select the survey scope ② Classify ③ Survey records ④ Organize the data.
⑤ Discuss communication ⑤ Design survey route ⑤ Group.
a①⑧⑥③②④⑤B④⑤①⑧⑥③②
c②④⑤①⑧⑥③D③②①⑧⑥④⑤
3 when exploring the influence of light on the life of rat girl, the variable in the experiment should be ().
Humidity, soil temperature and illumination
Which of the following lines describes grassland ecosystem? ( )
A picking chrysanthemums under the east fence, leisurely seeing Nanshan B but how much love there is for long grass, and enjoying the three spring rays.
Wildfire never completely devoured them, and they grew taller in the spring breeze. Late at night, I stopped to sit in the maple forest of love, and the frost leaves turned red in February.
In a breeding season, a carp can lay hundreds of thousands of eggs, which shows that ()
A organism affects the environment, and B organism adapts to the environment.
There is a cooperative relationship between C organisms and a competitive relationship between D organisms.
6 when observed with a microscope, the material must be ().
A fresh b thin transparent c dry d finished.
Now a microscope has two eyepieces (magnifications are 5 × and 8× respectively), and the magnifications of the two objective lenses are divided into two parts.
Especially 10×, 45×), then the highest magnification of this microscope is ().
A 50 times B 450 times C 360 times D 80 times
What doubles during cell division is ()
A nucleus b chromosome c mitochondria d chloroplast
As a result of 9 division, the chromosome number of the new cell is the same as that of the original cell, which indicates that ()
The number of A DNA molecules has not changed, and the number of B DNA molecules may change.
The genetic material contained in C is different, and the genetic material in D new cells has doubled.
10 The tissue with secretory function is ()
A epithelial tissue b connective tissue c nerve tissue d muscle tissue
1 1 Which of the following is () at the organizational level?
A digestive system b heart c blood d nerve cells
12 meristem cells evolve into cells of other tissues, and this change process is ().
A cell differentiation, B cell growth, C tissue formation, D cell division.
13 which of the following organisms is not a single-celled organism ()
Amoeba a, Chlamydomonas b, paramecium c, mouse wife d
14 virus is parasitic in cells, and its characteristic is ()
A reproduction, B development, C growth, D feeding and digestion.
15 both HIV and avian influenza virus belong to ()
Animal virus b plant virus c phage d prion
16 In the following plants, the differentiation of roots, stems and leaves is ().
Spirogyra a b cucurbitaceae c chuanxiong d nephropteris
17 "The West Lake is in spring, and the spring water is green." The reason why the spring water turns green is because the plants in the water grow in large numbers ()
A bryophytes b ferns c algae d seed plants
18 Compared with apricot, the main difference is ().
There are seeds in the fruit of pine trees. B Pine trees have no fruit, but their seeds are exposed.
The seeds of C pine trees have skins outside, and D pine trees have no seeds.
19 Some plants have dormancy after their seeds mature, which is beneficial to ()
A, seed germination; b, adaptation to environment; c, improvement of germination rate; d, preservation of nutrients.
Among the following biological groups, the group with the most similar living environment and reproduction mode is ().
A Adiantum cucurbitae B Kelp Masson Pine
C mushroom cabbage d sponge rice
3. Lian Yilian (Who is predestined friends with whom? Your wisdom is a thread; (***4 points)
A cell membrane and a power workshop.
Chloroplast b genetic information base
C mitochondria c control the entry and exit of substances
D nucleus d converts light energy into chemical energy.
Iv. Answer chart (every grid 1 minute, *** 18)
1, and the picture on the right is a schematic diagram of animal cells. Answer the following questions according to the pictures.
(1) Fill in the name of the structure in the drawing in the space below.
A b
C
(2) Taking the observation of human oral epithelial cells as an example, iodine is used.
When liquid dyeing, the most easily colored structure is
2. The picture on the right shows the seeds of kidney beans.
(1) Write the names of the structures in the diagram.
1 2 3
4 5
(2) The embryo is composed of figures, and it is the larva of a new plant.
3. The picture on the right shows the basic structural pattern of apricot flowers. Please observe carefully and answer the following questions.
The structures represented by some digital symbols in (1) diagram are as follows
Which part of apricot blossom does it refer to?
① ③
④ ⑥
(2) The blooming apricot flowers are falling with the wind, and she has
My pride-the fruit stays quietly on the tree, and the sweet apricots harvested in summer are pollinated and fertilized.
Judging from the development of apricot flowers, apricot trees are developed from apricot flowers, so [9]
Harmony is the most important structure of apricot flowers.
Analysis of five inquiries (* *17)
1' s classmates once caught the rat wives themselves when they were doing the experiment of "Exploring the environmental factors affecting the distribution of rat wives".
(1) Please ask a question from the perspective of the relationship between biology and environment. And make corresponding assumptions.
Ask questions (1 minute)
Make assumptions (1 min)
(2) The optimal number of rats and women used in this research experiment is (1) ().
A, a b, two c's, three d's, more than ten.
(3) What did you do with these mice after the experiment? ( 1)
2, when using a microscope, can adjust the intensity of light structure and (2 points)
3. If you see the word "Shang" in the field of vision of the microscope, then the words written on the transparent paper on the stage are
( 1)
4. Observe onion epidermal cells with the following four microscopes. The microscope with the largest number of cells in the field of vision is the first.
because
Microscope serial number eyepiece objective lens
1 5× 8×
2 10× 40×
3 15× 10×
4 20× 45×
5. When exploring the external environmental conditions of seed germination, a classmate designed the following experiment: take 40 identical mung bean seeds, divide them into 4 equal parts, label them with 1, 2, 3 and 4 on four clean empty cans and bottles with the same size, put two napkins on the bottom of the four cans, and put 10 mung bean seeds evenly on the napkins. Other operations and results.
figure
Content 1 2 3 4
Treatment method: sprinkle a little water to make the napkin wet, then tighten the bottle cap without sprinkling water, pour more water to drown the seeds, then tighten the bottle cap and sprinkle a little water to make the napkin wet, and then tighten the bottle cap.
Place the environment at 25℃, light at 25℃, light at 25℃, light at 4℃, and light.
The experimental results show that seeds germinate, seeds do not germinate, seeds do not germinate, and seeds do not germinate.
Please answer the following questions (***5 points)
(1) bottle 1 differs from bottle 2 3 4 only in one condition, and all other conditions are the same.
(2) The experimental results of Bottle 1 and Bottle 2 show that it is an essential external condition for seed germination.
(3) The experimental results of bottle1and bottle 0 show that sufficient air is a necessary external condition for seed germination.
(4) The test results of1and No.4 bottles showed that suitable seeds were necessary for germination.
Constraints.
(5) If students want to explore whether mung bean seeds need light for germination, they need to set a No.5 bottle at 25 degrees Celsius, and the other bottles are the same as 1.
6. In the world-famous Olympic Games, blacks showed their grace in track events, especially the 100-meter sprint.
Bobby is called "black whirlwind" by the world. Through scientific research, it is found that the average number of mitochondria in black muscle cells is higher than that of other races. What is the relationship between mitochondria in cells and 100-meter race? Please explain it with your biological knowledge. (3 points)
The answer to the biology examination paper of grade one and grade seven in junior high school.
Fill in a blank (1 minute for each blank, ***2 1 minute)
1. Stimulation 2. Sample 3. Biosphere 4. Biology 5. Biological environment. Right upper 7. Avoid bubbles.
8. Biological environment. Protein genetic material of tissues and organs 10. Cell membrane 1 1 cell.
12. endosperm 13. Pollen stigma 14. nuclear gene
Choose between two (2 points for each question ***40 points)
1.D 2。 A 3。 D 4。 C 5。 B 6。 B 7。 C 8。 B 9。 A 10。 A
1 1.C 12。 A 13。 D 14。 A 15。 A 16。 D 17。 C 18。 B 19。 B 20。 A
Three companies and one company (65438+ 0 points per line, ***4 points)
A - c B - d C - a D - b
Answers to the four-knowledge map (per grid 1 point, *** 18 point)
1.( 1)A cell membrane B nucleus C cytoplasm (2) nucleus
2.( 1) 1 hypocotyl 2 radicle 3 seed coat 4 cotyledons 5 embryos
(2) 1245
3 (1)① Petals ③ Anthers ④ Style ⑥ Ovary
(2) Ovary ovule stamen pistil
Analysis of five inquiries (* *17)
1.( 1) Does light have an effect on the life of rats and girls? (Pay attention to reasonableness) 1.
Light has an influence on the life of rat girl. 1 point
(2)D (3) returned to nature
2. Shader mirroring
3.4. 1 The smaller the magnification, the more you see.
5.( 1) One (2) Water (3) Three (4) Temperature
(5) Darkness (no light)
6. Mitochondria can transform chemical energy in organic matter into energy needed for physical activities in cells. The more mitochondria in black muscle cells, the more energy can be converted per unit time, thus making muscle cells more efficient in contraction and relaxation. Therefore, the advantage of black people in track events is "gifted".