Question

Cnidaria is characterised by

• A. Coelenteron
• B. Tissue level of organisation
• C. Nematoblasts
• D. all the above

Answer 1

The correct option is D all the above

Correct option: (d)

$\bullet$ Cnidarians are multicellular, diploblastic animals with a tissue grade of organisation.

$\bullet$ Coelenteron is a central gastrovascular cavity coelenteron which lacks anus but has a mouth which is surrounded by short and slender tentacles.

$\bullet$ Cnidoblasts or nematoblasts are stinging cells found in cnidaria and each of them bears a stinging cell organelle called nematocyst which is used in offense, defense and attachment of the animal.