Choanocytes are found in which of the following animals?

Pennatula

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Ctenoplana

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Limulus

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Leucosolenia

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Solution

The correct option is D Leucosolenia
Choanocytes or collar cells line the spongocoel and canals. They are seen in phylum Porifera (sponges). Leucosolenia is a sponge.

Pennatula is a cnidarian.
Ctenoplana belong to phylum Ctenophora.
Limulus belongs to phylum Arthropoda.

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