What is meant by Cnidoblast?
cnidoblast. / (ˈnaɪdəʊˌblɑːst, ˈknaɪ-) / noun. zoology any of the cells of a coelenterate that contain nematocysts.
What is Cnidoblasts and Cnidocytes?
A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive cell containing one large secretory organelle called a cnidocyst (also known as a cnida ( pl. cnidae) or nematocyst) that can deliver a sting to other organisms.
Who has cnidoblast in their body?
Cnidoblasts are present on the tentacles and the body in cnidarians.
What do cnidocytes do?
Cnidocytes are specialized cells that define the phylum Cnidaria. They possess an “explosive” organelle called cnidocyst that is important for prey capture and anti-predator defense.
What are cnidocytes explain their significance?
Cnidocytes (‘stinging cells’) are specialized cells that define the phylum Cnidaria (sea anemones, jellyfish, corals and hydras). They contain an “explosive” organelle called cnidocyst that acts as a 600 million-years-old microscopic injection system and is important for prey capture and anti-predator defense.
How many types of cnidocytes are there?
Cnidocysts can be divided into three main categories: (i) nematocysts, the dart-shaped cnidae with spines on hollow tubules that are used for prey piercing and venom injection; (ii) spirocysts, the elastic cnidae used for prey entanglement in Anthozoa; and (iii) ptychocysts which are found exclusively in the cerianthid …
Where are cnidocytes found?
Cnidarians contain specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, and serve to immobilize prey with toxins contained within the cells.
How we define a family?
family, a group of persons united by the ties of marriage, blood, or adoption, constituting a single household and interacting with each other in their respective social positions, usually those of spouses, parents, children, and siblings.
What are cnidocytes and their functions?