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Question

Which type of cells are absent in sponges?

A
Trophocytes
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B
Mycocytes
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C
Archeocytes
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D
Cnidocytes
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Solution

The correct option is B Cnidocytes
  • Archaeocytes are the undifferentiated cells and are the sex cells that include egg and sperm and have the capacity to other cell types in sponges.
  • Trophocytes function as a source of nutrition for gemmule formation in sponges.
  • Myocytes help in closing and opening of osculum. Cnidocytes are present in cnidarians that help in defense and capturing prey.
Thus, the correct answer is option D.

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