Question

Write the characteristics of earthworm based on following points-

a.Body cavity b. Symmetry c. Germ layers​

Answer 1

Earthworm belongs to the phylum Annelida of the animal kingdom.

Explanation:

Following are the characteristics of the earthworm based on the given points:-

A) Body cavity

• They are eucoelomate i.e, they have true coelom or body cavity and they are filled with coelomic fluid.

B) symmetry

• They exhibit bilateral symmetry. The body of the earthworm is divided into two equals half when cut through a single plane.

C) Germ layer

• The earthworm is triploblastic. Here, the developing embryo has three layers:- ectoderm, mesoderm and ectoderm. The mesoderm is in between the ectoderm and endoderm.