Question

Enlist the main features of phylum Annelida. Give examples.

July 20, 2024

Answer

(i) Body of annelids are bilaterally symmetrical.

(ii) They are triploblastic.

(iii) Metameric segmentation is present.

(iv) Closed circulatory system with respiratory pigment dissolved in the plasma.

(v) Nephridia for excretion and osmoregulation are present.

(vi) These animals are found in a variety of habitats like fresh water, marine water as well as land.

Examples are: Nereis (sand worm or clam worm), Aphrodite (sea mouse), Pheretima (earthworm).

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