What are the food trapping cells of sponges?
Porocytes control the amount of water that enters pores into the spongocoel, while choanocytes, which are flagellated cells, aid the movement of water through the sponge, thereby helping the sponge to trap and ingest food particles.
What are the cells of sponges called?
Three principal types of cells may be distinguished—choanocytes, archaeocytes, and pinacocytes–collencytes.
What are the cells in sponges that trap food particles and create sperm?
Collar Cell. The collar cells of sponges trap and digest food. One of the main digestive cell types is the choanocyte. These cells are commonly called “collar cells” because they have a collar of microvilli at the cell surface that is used to trap food particles flowing through the organism.
What is Ostia and osculum?
Ostia are the tiny pores present on the surface of sponges, from where water enters and goes to the spongocoel. The osculum is the opening from where the water goes out after passing through the spongocoel.
What is a pinacoderm in sponge?
The pinacoderm is the outermost layer of body cells (pinacocytes) of organisms of the phylum Porifera (sponges), equivalent to the epidermis in other animals.
What are choanocytes and amoebocytes?
Choanocytes and amoebocytes are present in sponges. Choanocytes trap the nutrients and amoebocytes transport the digested food from food vacuoles to other cells.
What is Pinacocyte cell?
Definition of pinacocyte : one of the flat cells covering the external surface and lining the incurrent and excurrent canals of sponges.
What is Austria and osculum?
Ostia are the tiny pores present on the surface of sponges, from where water enters and goes to the spongocoel. The osculum is the opening from where the water goes out after passing through the spongocoel.
What is pinacoderm and choanoderm?
Pinacoderm is a layer of cells that cover the external surfaces of sponges. Choanoderm is a layer of cells that cover the internal surfaces of sponges. Cell Composition. It is made up of pinacocytes. It is made up of choanocytes.
What are pinacocytes and choanocytes?
Choanocytes are body cells of sponges and pinacocytes are flat shaped cells that make up the pinacoderm of sponges. The key difference between choanocytes and pinacocytes is that choanocytes contain flagella while pinacocytes do not contain flagella.
What are pinacocytes and choanocytes in sponges?
Choanocytes are cells with a flagellum that line the interior of sponges. Pinacocytes are flat cells present in the outer most cell layer of sponges. Pinacocytes do not possess flagella. Location. Present as body cells within the sponge.
What is Ostia and osculum of Porifera?
Ostia are the tiny pores present on the surface of sponges, from where water enters and goes to the spongocoel. The osculum is the opening from where the water goes out after passing through the spongocoel.
What is Ostia in Porifera?
Ostia are the inhalant pores in the body of sponges. Water enters the body of sponges through ostia and reaches the spongocoel. It then flows out of the body through osculum. Ostia is present only in sponges i.e. phylum Porifera as sponges have a porous body. So, the correct answer is 'Porifera'.
What is pinacocyte cell?
Definition of pinacocyte : one of the flat cells covering the external surface and lining the incurrent and excurrent canals of sponges.