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JIPMER2005BotanyAnimal Kingdom

Which cells are found only in sponges?

Options

  1. AAmoeboid cells
  2. BChoanocytes
  3. CPigment cells
  4. DGland cells

Correct answer

B. Choanocytes

Step-by-step solution

Choanocytes are found only in sponges. The choanocyte is an ovoid cell with free ends bearing a transparent contractile collar. The collar surrounds a single, long flagellum. Choanocytes are used in feeding and for ensuring flow of water within the animal's body.

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