Sponges have evolved from

Ciliates

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Flagellates

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Protozoans

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Choanoflagellates

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Solution

The correct option is D Choanoflagellates
The sponges closely resemble colonial choanoflagellates belonging to the phylum Protozoa. Both possess colored and amoeboid cells. Thus, it is consider that sponge have evolved from choanoflagellates.

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