EVERYDAY SCIENCE

Detailed explanation-1: -Choanocytes (also known as “collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body types of sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane.

Detailed explanation-2: -Choanocytes are another name for collar cells. Sponge cells make up the majority of collar cells. Flagellated structures found in collar cells line the sponge cavity with endodermal cells.

Detailed explanation-3: -One group of specialized cells found within sponges is called choanocytes. These cells cover the inside wall of the sponge and are comprised of a round cell body, a single whip-like flagellum, and a collar. The collar is made of many microvilli and is why these cells are also referred to as collar cells.

Detailed explanation-4: -Choanocytes are specialized cells that have a single flagellum surrounded by a net-like collar of microvilli (Figure 3). Choanocytes join together creating the choanoderm, where they perform two major functions. The first is to create a flow of water and the second is to capture food items as they pass by these cells.

Detailed explanation-5: -Collar cells are found in sponges They are also called Choanocyte. This feature is unique and is present in sponges only. Choanocyte or collar cells line the spongocoel of the sponges. They contain a central flagellum surrounded by a collar of microvilli which is connected by a thin membrane.