A) Thesocytes
B) Pinacocytes
C) Cnidocytes
D) Archaeocytes
Correct Answer: D
Solution :
Archaeocytes are the to tipotent cells, which provide great regenerating power to sponges. Sex cells (sperm and ova arise from undifferentiated archaeocytes. Thesocytes are the amoebocytes with reserve food granules. Pinacocytes are the polygonal flat cells present as outer layer of cells, called pinacoderm lining the spongocoel or body cavity in Leucosolenia. Cnidocytes occur in entire epidermis except that of basal disc and are found only in cnidarians. Cnidocytes are spherical or oval cells.
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