Question

Define the terms and give one example of each:

(i) Bilateral symmetry

(ii) Coelom

(iii) Diploblastic

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Answer 1

Answer:

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Explanation:

(i) Bilateral symmetry: The type of body symmetry in which the two sides of the body are irror images of one another is called bilateral symmetry. Example: Earthworm

(ii) Coelom: Body cavity lined with an epithelium derived from the mesoderm is called coelom. Example: Spider

(iii) Diploblastic: Animals which have two germ layers: outer ectoderm and inner endoderm, in the embryo are said to be diploblastic.

Example: Hydra

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Answer 2

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Answer

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Bilateral symmetry

Property in which organism can be divided into two equal similar halves.

Coelom

Body cavity present in between intestinal canal and body wall

Diploblastic

Animals having two germ layers. Ectoderm and Endoderm