Question

in animals respiration occurs through​

Answer 1

Explanation:

In simple unicellular animals like Amoeba, respiration takes place by the simple diffusion of gases through the cell membrane. Most of the animals have, however, specific organs for respiration. The animals like earthworms which live in the soil use their skin to absorb oxygen from air and remove carbon dioxide

Respiratory organs are lacking in earthworm and gaseous exchange takes place through the skin, which is richly supplied with blood vessels and has to be kept moist by excretion of coelomic fluid through the dorsal pores. Carbon dioxide also diffuses from blood to the skin from where it is eliminated.

Answer 2

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