Sponges are characterized by
(a) amoeboid cells (b) choanocytes cells
(c) pigmented cells (d) gland cells
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Sponges are characterized by:
(b) Choanocytes cells
- Choanocytes cells are also known as "collar cells". They are along the interior line of syconoid, asconoid and leuconoid body type sponges.
- Due to their unique structure, it becomes possible to carry out several functions within sponges.
- Choanocytes cells perform the primary function of assisting circulation.
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Sponges are characterized by choanocytes cells.
Option (B) is correct.
Explanation:
Choanocytes are cells, which line the interior body of the sponges.
Choanocytes are of three types.
- They are found dotting the surface of the spongocoel in asconoid sponges.
- The form radial canals in syconoid sponges.
- They comprise entirely the chambers in leuconoid sponges.
Choanocytes generate a flow of water through the sponge's pores, into the spongocoel and out through the osculum.
This improves both respiratory and digestive functions for the sponge.
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