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Arthropoda and Mollusca

Which one of ...

Question

Which one of the following does not have an excretory system?

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Solution

Ophiura

Ophiura is an echinoderm which is commonly called Brittle star. It lacks a definite excretory system. The waste passes out through the bursal slits.

Final answer

(d) Ophiura

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Arthropoda and Mollusca

Standard IX Biology

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