The characteristics of 11 kinds of animals in Bashang are as follows:

1. Coelenterates: their bodies are radially symmetrical; There are stinging cells on the body surface; Have a mouth but no anus (such as anemones, jellyfish, corals).

2. Flat animal: The body is symmetrical on both sides; Flat back and abdomen; Have a mouth but no anus (such as planarian, Clonorchis sinensis, Schistosoma japonicum).

3. Linear animals: slender and cylindrical; There is cuticle on the body surface; A mouth has an anus (such as roundworms, pinworms, hookworms, filariasis).

4. annelids: the body is cylindrical and consists of many similar segments; Exercise assisted by bristles or warty feet, such as Nereis.

5. Mollusks: The soft body surface has an mantle, and most of them have shells; The moving organ is the foot (such as SINONOVACULA constricta, turtle, snail, squid, octopus, squid, scallop, moth snail, etc.).

6. Arthropods: There are tough exoskeletons on the body surface; The body and appendages are segmented (Arthropoda includes Insecta, Crustacea, Arachnida and Polypoda).

7. Fish: live in water; The body surface is often covered with scales; Breathe through gills; Swimming through the swing of tail and trunk and the coordination of fins.

8. Amphibians: larvae live in water and breathe through gills; Most adults live on land, and they can swim in the water, breathe with their lungs, and breathe with the help of their skin.

9. Reptiles: There are often horny scales or nails on the body surface, which have lung breathing and lay eggs with hard shells on the surface.

1. Birds are covered with feathers; Forelimbs become wings; Beaked and toothless; There is a balloon to assist lung breathing.

11. Mammals: body surface coat; Viviparous and lactation; Teeth are divided into incisors, canines and molars.

animal characteristics:

1. Respiratory system

The respiratory system is a feature of mammals, which includes respiratory tract and lungs. In the respiratory system, air enters the lungs through the respiratory tract, with a large number of alveoli and a large capacity of the lungs.

2. circulatory system

circulatory system is a characteristic of birds, which reflects a high level of metabolism. The circulatory system is mainly reflected in the complete separation of arteriovenous blood, complete double circulation, large heart capacity, fast heartbeat frequency, high arterial pressure and rapid blood circulation.

3. Reproduction

The reproductive characteristics of animals mainly include male genitalia and female reproductive system. Male animals have paired testes and vas deferens, which produce sperm respectively. Female animals have two ovaries, which are responsible for laying eggs.