Question 123
Grade 8 grading, multiple-choice questions (each question has only one correct answer, please fill in the letter code of the correct answer in brackets, with 2 points for each question and ***50 points).
1。 Frogs hibernate, and cells exchange gas with the external environment in the body ()
A. skin B. lung C. skin and lung D. skin or lung BR/>
2。 Cut off the pectoral fins of the east carp, and then put the carp in the water for observation. It is found that crucian carp can swim, but the route is abnormal, and the fish loses its balance and rolls, indicating the pectoral fin of the character ().
A. keep your body balanced. B. Stimulate the momentum of progress
C. keep the direction. D. control the fluctuation of fish.
3。 Xin Qiji, a poet in the Song Dynasty, wrote, "In the fragrance of rice and flowers, it is said that the harvest year is good, and the frogs are heard in the pool."
A. hoarding behavior B. congenital behavior C. aggressive behavior D. defensive behavior
4。 The behavior of animals is incorrect ()
A. animal behavior is acquired behavior. B. animals are born with innate behavior.
Three-parent birds brood D. It is an innate behavior that elephants can learn to play the harmonica.
5。 Part of an animal's body decomposes organic matter into inorganic matter through breathing, which reflects the role of animals in nature ()
Maintain ecological balance B. Promote the ecosystem in the material cycle
C. Help plants spread
The nutrients that an organism absorbs from another organism or other organic substances to maintain its own life activities are called ()
A. autotrophic B. predatory C. parasitic remains are vegetative and saprophytic
Yogurt not only tastes good, but also has high nutritional value. This is because of () in milk.
BR/>； A. Lactic acid bacteria B. Acetobacter C. Yeast D. Aflatoxin
8。 Bloom ()
/a & gt；
A. Animals and plants B. The sudden disappearance of natural bacteria and fungi will cause infectious diseases.
C. Plants D. Flora The fauna of pests is still in ruins.
The following are our specialty rare mammals ()
B. Giant panda, giant salamander, giant panda, dolphin, dolphin and golden monkey.
C. golden monkey, red-crowned crane, baiji D. Tibetan antelope, alligator and baiji.
10。 Which of the following is the most favorable measure to maintain the ecological environment? ()
/a & gt；
A. A large area of marshland has been reclaimed into farmland B. Spraying pesticides on vegetable fields to kill Pieris rapae
C. Industrial wastewater is discharged into the water area "red tide", and toxic algae die.
D lure communication and interference between male and female pests in this field.
BR/>；
When you meet an injured flightless bird, what do you think is the best way?
A. catch the food it sells to restaurants. B. take it home.
C.put it back into the wild immediately. D. Treat it, feed it, and release it to nature after being hurt.br/>.
12。 The following animals belong to mollusks (a group)
A turtles, crabs, mussels, snails, jellyfish, leeches, earthworms and nereis
13 birds have airbags, airbags, and the role of birds in flight does not include ()
A. Assist the lungs to complete double breathing. B. Reduce weight and increase buoyancy.
C. radiate heat and lower body temperature D. keep warm and keep the temperature constant.
14。 In the experiment of observing earthworms, the following operations can make earthworms live in a normal state ()
Air circulation A. The surface of earthworm is dry in the environment B. The surface of earthworm is coated with vaseline to keep moist.
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C. Put earthworms in water to avoid surface dryness. D often wipe the surface of the earthworm with a cotton ball soaked in water.
BR/>； 15 birds need a lot of oxygen in flight, and the respiratory gas exchange organ of birds ()
A. lung B. airbag C. lung and trachea airbag D.
16。 Moldy orange peel, visible to the naked eye is ()
BR/>； A. spore India B. spore C. Bacillus D. colony
17 One of the following social behaviors ()
BR/>； & gta. Anemones and hermit crabs B. Many insects that live on the grass.
C. The natural enemies of aphids can release pheromones of other individuals of the same kind as soon as possible to avoid them.
Grass, insects, frogs, snakes and eagles live on the grassland.
18。 Next, is this caused by the threat to biodiversity ()
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AB Sri Lanka's environmental pollution and deforestation C. Animal behavior D. Overexploitation and indiscriminate killing
19 A whale lives in the ocean, but it breathes with its lungs and suckles viviparously, so it should belong to ().
A. Fish, birds, amphibians and mammals
BR/>；
20。 Suppose you have 100 bacteria at present, the calculation speed of the first generation of bacteria is to breed one every 30 minutes, without washing your hands, and the number of bacteria will be in your hand after four hours ()
12 800b25 600c51200d, unable to calculate.
/& gt； 2 1。 Bacillus subtilis can make fruit rot, the alcohol smell of yeast, and the rotten fruit gives off what fruits these creatures absorb to maintain their lives. ()
A, water B, D, C, organic and inorganic vitamins
22。 The foot of this bird on the right, this foot ① ② This bird is suitable for living in ()/a >
A. Grassland ecosystem and forest ecosystem B. Forest ecosystem and wetland ecosystem
C. Farmland ecosystem and lake ecosystem D. River ecosystem and grassland ecosystem
23。 The following is not the content of scientific bionics, but the pilot's body ().
/a & gt；
A. "Anti-load suit B. Design
C. spherical planetarium d of Sydney Opera House.
24. The following narrative about bioreactor is incorrect ().
Any substance in a bioreactor can make people.
B. Bioreactors can save the cost of building factories and purchasing equipment.
C. bioreactor can reduce complexity/>;
Production technology and environmental pollution of< cis-polybutadiene rubber
D. Breast bioreactor People think that "the best animal bioreactor.
/a & gt；
25. The following information exchange methods do not belong to animals ().
Ba bee dance action peacock
express
C. Squid ink D. Release the threat of human beings and fill in the blanks (unless otherwise specified, each blank is given ***30 points).
BR/>； 26(3 points) Three types: saprophytic type, parasitic type and biological type. There is a human disease called tinea pedis. Fungi _ _ _ _ _ _ _ are on the body surface and can make people sick. Bacteria in the gastrointestinal tract of cattle help to decompose cellulose in the food where grass and cattle bacteria live. They depend on each other and live together. The relationship between biological bacteria and cattle is _ _ _ _ _ _ _ _ _ _ _ _; Bacteria and fungi, as well as the decomposition of animal and plant remains into carbon dioxide, water and inorganic salts is called _ _ _ _ _ _.
27 Different types of organisms (5 points) and living environment are different breathing patterns. : locust has difficulty breathing in trachea; Carp _ _ _ _ Breathe; The tortoise _ _ _ _ _ breathes, the bird breathes with its lungs, and the frog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
28。 (4 points) Take a live earthworm and put it on the glass for observation:
(1) Feel the earthworm. Looking at the abdomen with a magnifying glass, you can see the abdomen with many small protrusions-
(2) The moving speed of earthworm glass is higher than that of paper.
(3) During the experiment, you should always gently loosen the earthworm on the surface with a wet cotton ball, because the earthworm can breathe.
29(4 o'clock) In summer, dirty clothes are easy to get moldy and food is easy to deteriorate. Because they have bacteria, the living conditions of fungi must be: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _; Steamed bread is soft and porous, and the thermal expansion of the gas produced by adding yeast and flour fermentation at a proper temperature.
30。 (4 points) Please read the following article carefully and complete it:
Small locusts playing in the pond get annoyed when they meet carp, but my heart is carp saying, "Do you dare to stay in the water for an hour?" The grasshopper said casually, "Do you dare to stay on the shore for an hour?" "The carp went on to say," We dare! " I thought, "This is mine. You are suffocating. "
Frogs testify that the head of such a small locust is deeply immersed in the water. An hour later, the locust raised its head unharmed and suddenly plotted against the carp.
"Help yourself, Mr. Carp," cried the frog. The carp's last move, jumping ashore, soon died.
(1) The reason why the carp failed: it didn't know that the locusts breathed gas to visit the body parts of the portal student _ _ _ _ _ _ _ _ _ _ _; Grasshoppers breathe _ _ _ _ _ _ _.
(2) How much higher is the oxygen content in the air on shore than that dissolved in water? Why do carp suffocate?
_____________________________。
(3) If carp gambles instead of frogs, will frogs die? __________。
3 1。 (10) The following is the specific process of home brewing:
Cooked rice for the first time, cooled to 30℃, mixed with a little water and a certain amount of koji rice (other containers are also placed in porcelain jars). Dig a hole in the middle and seal the brewing container. If the weather is cold, heat preservation measures should be taken and placed in a suitable place for heat preservation (28℃) 12 hours.
Now I ask you to do the following:
Briefly analyze, what is the purpose of its fermentation process (1), the chef who cooks for the first meter?
BR/>； _____________________________________________________________。
(2) Adding distiller's yeast, and cooling the cooked glutinous rice to room temperature. Why?
_____________________________________________________________。
(3) Qu: firstly, add the glutinous rice starch into _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. The type of yeast nutrition is _ _ _ _ _ _ _.
(4) What is the purpose of digging a hole in the middle?
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (2 points).
(5) What is the sealed container in the brewing process?
____________________________________________________________。
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(6) In cold weather, the purpose of heat preservation is _ _ _ _ _ _ _ _ _ _ _.
(7) Why is there a layer of foam on the surface of liqueur?
____________________________________________________________。
Knowledge map answer (except for special labeling and spatial division, ***20 points) BR/& gt；;
32。 (5) It is of great significance. Animals with teeth live and live. Seals swimming under Antarctic ice sometimes need their teeth to bite through the ice, surface to breathe air, and seal the damage of teeth, which means death. Injury to teeth in the future will not only affect the digestion of food, but also lead to diseases and bring great pain. BR/>；
As an animal's mandible and teeth, there are schematic diagrams. According to the chart, answer the following questions about teeth.
(1) has a variety of structures such as animal teeth and human teeth, and its functions are:
_____________________________________________。
(2) Differentiation can be inferred from the teeth of animals: in the most likely _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ From this picture, it can be inferred that the digestive tract of animals is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. (the second feature)
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33(2 points) In our study and life, our hands will be polluted by many bacteria.
& lt/ Hypothesis: Washing hands frequently can reduce many fingers contaminated by bacteria. If you don't wash your hands, your fingers will be contaminated by bacteria, which will affect your health. The broth peptone filled with culture medium is sterilized. AB students, bacterial culture experiment, as shown in the figure:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ BR/>
34。 (4 points) Please answer the questions according to the correct bacterial structure diagram.
The /( 1) gene of the bacteria mentioned in the letter.
(2) the movement of bacteria to infer the structure represented by English letters. BR/>；
(3) When the structure mentioned in the letter thickens, bacteria form a dormant body to resist the harsh environment.
BR/>；
35 (2) Students A and B can simply classify the following animals according to different classification standards, as shown in the following table:
BR/>；
kind
Animal name
second
kind
Animal name
Rabbit, swallow .../>
Swallow, frog, rabbit, fish
Bees, frogs, earthworms,
Spider, fish
2 BR/> bees, earthworms, spiders
Sort: A: B:
/& gt； 36。 (5 points) Six animal morphological maps (in proportion to size), according to the complete attribution of the maps (1) to (3). ?
(1) According to whether animals have this function, all animals are divided into two categories. ?
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(2) Animals belonging to the same class in the picture. ?
(3) Unique ventilation structure, B breathing and E breathing. ?
37. A study shows that mammals and birds are harmed or threatened by the following table to answer questions: (2)
cause
mammal
bird
poach
3 1%
20%
Habitat loss
32
60%
Alien species
Other reasons 17%
12%
20%
8%
(1) data interpretation: What are the main reasons? What are the main reasons why mammals are endangered or threatened?
(2) The threat of birds?
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Reference answer
A multiple-choice question (2 points for each question, ***50 points)
Question12456789101kloc-0/213.
Answer CABABDADBDDBD
Question141516171819 202122 23 24 25.
Answer DADCCDBCBDAC
fill up a vacancy
26。 Parasitic saprophyte
/a & gt；
27。 Gills, lungs, balloons, lung skin
28( 1)(2) Slow (3) Wet body wall (rough bristles)
29。 Temperatures of water, organic matter and carbon dioxide
30( 1) Thoraco-abdominal trachea (2) Gills are water and attached, and gill gas must be dissolved in water (3) No.
3 1。 Answer: (1) Kill other bacteria; (2) Prevent yeast death caused by high temperature. (3) Glucose, alcohol and carbon dioxide are saprophytic (heterogeneous). (4) It is beneficial to the growth of aerated yeast, with sufficient oxygen and rapid propagation in a short time. (5) In order to form an anoxic environment, the temperature of alcohol (6) produced by anaerobic respiration of yeast is increased to meet the required conditions, namely, the life span of yeast, metabolic rate, physiological activity of carbon atoms formed by wine (7) in yeast, and gaseous carbon dioxide.
The answer to the knowledge chart
32( 1) Dogs cut silk and cut off food (2) The incisors with developed grass, molars and canine teeth degenerated, and the cecum of digestive tract developed.
The experimental design of 33 B control group is easy to draw conclusions
34( 10) (1) Bacillus A (2) F (3) C.
Is the temperature of the spine a constant?
Skin gill 36( 1) spine (2)C, D(3)?
37。 (1) poaching and habitat loss (2) habitat loss trachea?