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Question

The proboscis gland is an excretory organ in

A
Dentalium
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B
Echinus
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C
Cucumaria
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D
Saccoglossus
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Solution

The correct option is D Saccoglossus
Proboscis gland is an excretory organ in hemichordates. Of the given options, Saccoglossus is a hemichordate.
Dentalium is a mollusc. Nephridia are excretory organs in molluscs.
Echinus and Cucumaria are echinoderms. In echinoderms, the excretory wastes are removed out of the body by diffusion.

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