What is the function of the amoebocytes?

Published by Charlie Davidson on

What is the function of the amoebocytes?

Amoebocytes have a variety of functions: delivering nutrients from choanocytes to other cells within the sponge; giving rise to eggs for sexual reproduction (which remain in the mesohyl); delivering phagocytized sperm from choanocytes to eggs; and differentiating into more-specific cell types.

Are Archaeocytes and amoebocytes the same thing?

Archaeocytes, often called amoebocytes, are amoeboid cells (i.e., they have the ability to move); their cytoplasm contains large quantities of ribonucleic acid (RNA), and their large nuclei contain small bodies known as nucleoli.

What is Archaeocytes in biology?

Archaeocytes (from Greek archaios “beginning” and kytos “hollow vessel”) or amoebocytes are amoeboid cells found in sponges. The structure of these cells match to that of the stem cells as of containing high cytoplasmic content that helps the cells to morph according to their function.

What are the two functions of Amebocytes?

They basically store, digest and transport food, excrete wastes, secrete skeleton and also may give rise to buds in asexual reproduction. When it comes to their functions, amoebocytes are the life of sponges. LARGE AMOEBOCYTES- They distribute food to other cells of sponge and move by way of pseudopodia (false feet).

How do Choanocytes function?

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.

What are spicules function?

Besides supporting sponge cells, spicules can help larvae stay buoyant while in the plankton or reach the bottom at settlement, enhance reproduction success, or catch prey.

Are Gemmules Archaeocytes?

The structure of Gemmules includes Micropyle, Spicule, Inner layer, Archaeocytes and an Outer pneumatic layer. The Archaeocytes are reproductive cells and the spicule is the sharp-pointed structure, which is involved in protecting the gemmules from predators and also provide structural support to the gemmules.

What is the Pinacocytes function?

Function. Pinacocytes are part of the epithelium in sponges. They play a role in movement (contracting and stretching), cell adhesion, signaling, phagocytosis, and polarity. Pinacocytes are filled with mesohyl which is a gel like substance that helps maintain the shape and structure of the sponge.

What do choanocytes look like?

Each choanocyte has a single flagellum, which looks like a whip-like structure. This structure extends from the center of the cell out towards the open cavity of the sponge. Surrounding this single flagellum is a cylindrical collar comprised of many microvilli, which are very tiny finger-like projections on cells.

What are the functions of amoebocytes in the body?

Amoebocytes carry out several special functions: they deliver nutrients from choanocytes to other cells, give rise to eggs for sexual reproduction, deliver phagocytized sperm from choanocytes to eggs, and can transform into other cell types.

Which is an essential function of the archaeocyte?

Functions. Cellular differentiation is an essential function of the archaeocyte. All specialized cells within the sponge have its origins with the archaeocyte. This is especially important in reproduction as the sex cells of the sponge in sexual reproduction are formed from these amoeboid cells.

How are amoebocytes used in asexual reproduction?

Functions. Similarly in asexual reproduction amoebocytes result in the formation of gemmules which are cyst-like spheres containing more amoebocytes as well as other sponge cells including the phylum specific choanocyte. These cells move within the walls of a sponge and form spicules.

How are choanocytes different from the amoebocytes?

Choanocytes (not an amoebocyte but a different type of cell) are flagellated cells that capture and digest food in sponges. These cells use their flagella to create a current, bringing food into the pores of the sponge, capturing them, and packaging them into food vacuoles.

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