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STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 4. Animal kingdom1 Mark
MCQ
Choanocytes are present in
  • A
    Physalia
  • ✓
    Sycon
  • C
    Pleurobrachia
  • D
    Echinus
✓

Answer

Correct option: B.
Sycon
b
Choanocytes or collar cells are characteristic cells of porifers/sponges. In sponges, canal and spongocoel are internally lined by choanocytes.

In options, Physalia belongs to cnidaria/coelenterata. Sycon belongs to porifera/sponges.

Pleurobrachia belongs to ctenophora.

Echinus is a sea-urchins and belongs to Echinodermata.

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