Question

Member of which phylum possesses the cnidoblasts?

Answer 1

The members of the phylum named 'Cnidaria' or 'Coelenterata' has the structures called cnidoblasts.

Additional Information :

1. Examples of organisms belonging to this phylum are : Aurelia, Obelia, Gorgonia, etc.

2. They have cnidoblasts for capturing their prey and also these sturctures are needed for defense as well as for anchorage.

3. There are stinging structures called nematocysts present in the cnidoblasts.

4. We can find cnidoblasts on the tentacles of the Coelenterates.

5. The organism that fall under this phylum are diploblastic.

Answer 2

Cnidoblasts are the special cells and characteristic cells of phylum Cnidaria.

Explanation:

• Phylum Cnidaria is a very primitive phylum and is exclusively aquatic phylum that contains organisms like hydra, jellyfish, etc.
• Cnidoblasts are special protective and attacking cells that are present in member of phylum Cnidaria.
• These cells have a stinging apparatus that contains a string, a mechanical receptor sensing touches and poison in gland.
• As the prey touches the organism, mechanical receptors are triggered and sting along with poison is ejected by organism into the prey.