First slide

Classification of Animals

Question

Which of the following is not a feature of echinoderms?

Easy

A

Exclusively found in marine waters and coelom acts as circulatory system
B

An excretory system absent
C

Presence of water vascular system, in which water flows to circulate oxygen and assist movement
D

Sexes are separate. Reproduction is sexual. Fertilization is usually internal.

Solution

In echinoderms;
Sexes are separate,
Reproduction is sexual,
Fertilisation is usually external.

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