The outer thin,flat,epithelial-like cells that cover the outside and some inside surfaces of sponges,are
A) amoebocytes.
B) pinacocytes.
C) choanocytes.
D) spicules.
E) spongin.Pinacocytes line the outer surface of the body wall of sponges.They may ingest food by phagocytosis and many are contractile to help regulate water flow.
Correct Answer:
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Q1: Which one of the following statements regarding
Q2: Specialized archaeocytes that secrete spongin are
A)collencytes.
B)sclerocytes.
C)choanocytes.
D)spongocytes.
E)lophocytes.Spongocytes are
Q3: The sponges date back to
A)the Devonian period
Q5: Cells responsible for water flow and capture
Q6: Calcareous or siliceous elements of the sponge
Q7: Specialized archaeocytes that secrete large quantities of
Q8: The most complex and the most common
Q9: The structural protein found in all sponges
Q10: The modified cells of sponges that form
Q11: Flagellated canals of syconoid sponges form by
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