Question

which special cells are present in the body of sponges​

Answer 1

 "collar cells"✔✅✔✅✅✔✅✔✅✔

Answer 2

Answer:

Choanocytes (also known as "collar cells") are special cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or undulipodia, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges.

Explanation: