Read the statements regarding echinoderms and choose the correct option
I. All are marine with organ system level of organization
II. Adults are bilaterally symmetrical
III. They are dioecious
IV. Fertilisation is internal and indirect development is observed
V. Triploblastic and acoelomate animals

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I and III

Only V

I, III and V

I and V

answer is A.

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Detailed Solution

Adult Echinoderms show pentaradial symmetry, external fertilization with indirect development, triploblastic and enterocelomates.

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