What is the difference between Cnidoblast and nematocyst?

Cnidoblast is the stinging cell, which consists of a nematocyst in it. Nematocysts are the stinging capsules of cnidoblasts, which capture prey.

What is a cnidocyte used for?

The cnidocyte is a specialized cell for delivering toxins to prey as well as warning off predators. Cnidarians have separate sexes and have a lifecycle that involves morphologically distinct forms.

Where is the cnidocyte?

Whereas the defining cell type for the sponges is the choanocyte, the defining cell type for the cnidarians is the cnidocyte, or stinging cell. These cells are located around the mouth and on the tentacles, and serve to capture prey or repel predators.

What are Cnidocytes and nematocysts and what is the role of these structures?

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. Nematocysts contain coiled threads that may bear barbs.

What is the relationship between a nematocyst and cnidocyte?

Cnidocyte and nematocyst are two structures that aid in the capturing of the prey by cnidarians. Cnidocyte is an epidermal cell that contains the nematocyst. Cnidoctes can be found in the tentacles of the cnidarians. The nematocyst is the organelle inside the cnidocyte used to inject toxins into the prey.

What is Cnidoblast cell?

A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle called a cnidocyst (also known as a cnida ( pl. cnidae) or nematocyst) that can deliver a sting to other organisms.

What is a cnidocyte and how does it work?

A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle called a cnidocyst (also known as a cnida (plural cnidae) or nematocyst) that can deliver a sting to other organisms.

How does cnidocyte discharge with special reference to nematocyst?

The immature cnidocyte is referred to as a cnidoblast. When the trigger is activated, the tubule shaft of the cnidocyst is ejected and in the case of the penetrant nematocyst, the forcefully ejected tubule penetrates the target organism.

What is the relationship between nematocyst and a cnidocyte?

Is cnidoblast and Cnidocytes same?

What is polyp and medusa?

There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa. Some cnidarians change form at different phases of their life cycle, while others remain in one form for their entire life.

Is Cnidoblast and Cnidocytes same?

What are the three types of nematocysts?

They are the diagnostic feature of the phylum . All cnidarians possess cnidae; no loss of the feature is known. There are three main types of cnidae: nematocysts, ptychocysts, and spirocysts, with many variations. Depending on the species, one or more types may be on the organism.

What are cnidae and nematocysts?

Nematocysts are a type of cnidae, and it is the presence of cnidae that separates jellyfish and other cnidarians from other animals. Cnidae are among the most complex intracellular secretion products known. cnidarian. …intracellular stinging capsules, known as nematocysts or cnidae, which give the phylum its name.

What does cnidocyte mean?

cnidocyte (plural cnidocytes) (biology) A capsule, in certain cnidarians , containing a barbed, threadlike tube that delivers a paralyzing sting.

What is inside a nematocyst?

Nematocysts are specialized organelles found inside the nematocytes of coelenterates, as it is described above. A nematocyst is a capsule with the shape of a bulb, which contains a sharp-edged barb connected to the bottom of the capsule by a coiled thread.