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Question

After drying, a bath sponge contains

A
Hold fast
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B
Tentacles
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C
Spicules
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D
Spongin fibres
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Solution

The correct option is D Spongin fibres
When bath sponges (Euspongia) dries up, only the skeleton, which is made up of spongin fibers is left behind. Spongin is an organic horny elastic substance. They are fibers insoluble, chemically inert and resistant to protein digesting enzymes.
So, the correct answer is option D.

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