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Where is the first chapter of Unit 4 of the second grade biology test questions?
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I. Multiple-choice questions: (2 points for each question, ***40 points)

1 and the changes of the gun's heart and body temperature are () respectively.

A, heart cavity, body temperature is not constant B, heart four cavities, body temperature is constant.

C, heart cavity, body temperature is not constant D, heart cavity, body temperature is constant.

2, the following animals with diaphragm is ()

A, lizard b, bat c, frog d, shark

3, birds are different from other types of animals, the most obvious feature is ()

A, the body is streamlined; b, the toe has claws.

C, covered feathers d, a pair of wings

4. The precious birds wintering in Jiangsu tidal flat mainly include ().

A, acacia B, red-crowned crane C, brown eared pheasant D, Langshan pheasant

5, giant salamander is a rare animal in China, it belongs to ().

A, fish B, mammals C, amphibians D, reptiles

6, the following does not belong to reptiles is ()

A, lizard b, tortoise c, snake d, salamander

7, the change of water speed, fish can quickly perceive, by ().

A, eye B, ear C, nose D, lateral line

8, among the following animals, does not belong to the insect is ()

A, cicada b, scarab c, centipede d, silkworm

9, earthworm respiratory structure is ()

A, lung B, trachea C, body surface D, gills

10, rice and pork refers to ()

A, pork with rice grains B, pork with pork tapeworm

C. Pork D containing Taenia solium larvae and pork containing Taenia solium eggs

1 1. Among the following animals, the most primitive and lowest is ().

A, Ascaris B, Coral C, Worm D, Amoeba

12, tropical ocean, the main component of coral reefs is ()

A, coral B, soft tissue of coral

C, coral exoskeleton d and ectoderm.

13, can feed the larvae with milk is ()

A, cuckoo B, pigeon C, tortoise D, mouse

14, hibernation habit is ()

A, rabbit b, pigeon c, lizard d, weasel

15, the closest relationship with human beings is ()

A, tiger b, monkey c, orangutan d, dog

16, the bird known as the "guardian of farmland" is ()

A, woodpecker B, pigeon C, sparrow D, owl

17, the rare reptile endemic to China is ().

A, giant panda B, golden monkey C, Chinese alligator D, giant salamander

18, chicken is the most developed muscle ()

A, leg muscles B, chest muscles C, neck muscles D, and wing muscles

19, the respiratory structure of paramecium is ()

A, collecting tube b, surface film c, food vacuole d and cilia.

20, animal groups, the highest is ()

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

Fill in the blanks: (2 points for each question, ***40 points)

1, the rabbit body cavity is divided into two cavities, including different organs and different organs.

2. Birds adapt to flying life, and their bodies are shaped, which can be shrunk and their forelimbs become.

, is a flying organ, the body surface is covered.

Reptiles cover the body surface to prevent them from being lost in the body, so they can live in

environment

4. Bees live a lifetime, and each group generally has only one minority and thousands.

.

5. Ascaris is parasitic in human body. The characteristics suitable for parasitism are: on the body surface, it can resist the erosion of digestive juice. It has a simple structure and can only absorb semi-digested food, but it is very developed and can lay many eggs.

Third, the connection questions (one point for each question)

(1) Associate the following animals with their main features and representative animals.

Mammals have soft bodies and exoskeleton polyps.

Amphibians are slender, unsegmented, and have skin snails.

Arthropods live in water, and their body walls are hookworms with three germ layers.

Mollusks viviparous and suckling dolphins

Metamorphosis of linear animals A giant shrimp with two rooms and one room in its heart.

Coelenterates have segmented salamanders with exoskeletons, feet and antennae on the body surface.

(2) What kind of animal behavior is the following? Connect them with a thread.

Defensive behavior of cats catching mice

Triumphant fighting behavior

Color-changing foraging behavior of chameleon

Reproductive behavior of two fighting antelopes

Fourth, know the picture A:

(1) Fill in the names of each part in the mussel structure diagram and answer the questions.

(1) ① ② ③ In the figure

(2) The mussels breathe, and shells form.

(2) The diagram below shows the heart of amphibians and reptiles. Answer:

1, ③ ④ in the figure

2. Figure A represents the animal heart and Figure B represents the animal heart, wherein,

Animals are more adapted to life on land.