Identify another name of Choanocytes.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Collar cells.
Choanocytes, also known as collar cells, are specialized cells found in sponges (phylum Porifera). They have a distinctive structure with a central flagellum surrounded by a collar of microvilli. The flagellum beats to create a water current, drawing water through the sponge's body, while the collar traps and ingests food particles through phagocytosis. Choanocytes play a crucial role in both feeding and maintaining water flow in sponges.
Other Options:
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Flame cells: Involved in excretion in flatworms, not found in sponges like choanocytes.
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Sperm cells: Male reproductive cells, completely different in structure and function.
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Stem cells: Undifferentiated cells that can become various cell types—not related to choanocytes.