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Question

The excretory organs of prawn are

A
Malpighian tubules
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B
Nephridia
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C
Kidneys
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D
Green glands
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Solution

The correct option is C Green glands
Different kinds of excretory system in prawn are as follows:
(a) A pair of antennary or green glands- the pair of excretory organs in each side of the head region of decapod crustaceans, emptying at the base of the antennae.
(b) A renal or nephroperitonial sac: large, thin-walled sac lying above the cardiac stomach
(c) The integument: It is an important excretory organ as the nitrogenous wastes present in the integument are removed during the moulting of the chitinous integument.
Therefore, the correct answer is option D.

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