State the difference between cnidoblast and colloblast
Answers
Answer:
Definition
Cnidocyte: Cnidocyte refers to a specialized cell, containing cnidocyst, which is involved in capturing the prey in cnidarians.
Nematocyst: Nematocyst refers to an organelle inside the cnidocyte, consisting of an ejectable thread that causes a sting.
Significance
Cnidocyte: Cnidocyte is an ectodermal cell in cnidarians.
Nematocyst: Nematocyst is the organelle that occurs inside the cnidocyte.
Alternative Names
Cnidocyte: Cnidocytes are also called cnidoblasts or nematocytes.
Nematocyst: Nematocyst is also called cnidocyst or cnida.
Role
Cnidocyte: Cnidocytes are stinging cells used in defense and capturing prey.
Nematocyst: Nematocyst contains toxins to be injected into the predator or prey.
The cnidoblast can be differentiated from colloblast on the basis of physical and chemical function.
Explanation:
- Cnidoblast is the specialized cells that helps in the prey capturing in case of cnidarians.
- Cnidoblast forms the lining of ectodermal cells of the cnidarians.
- Colloblast cells helps in the food capturing in case of the ctenophora. These cells stick to their prey.
- The eosinophilic granules are present on the apical surface of the coloblast cells in ctenophora.
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