Question

Write down four general characters of cnidarians (coelenterates).Give two examples.

Answer 1

Cnidarians (coelenterates):

1. Cnidaria is a phylum under the Animalia Kingdom.
2. These are mostly aquatic or marine habitat animals.
3. These species exhibit a tissue-level organization.
4. The mouth is enclosed by thin and short tentacles.
5. They are diploblastic animals.
6. They have cavities in their body.
7. The body is radially symmetrical.
8. The digestion is both intracellular and extracellular.
9. The nervous system and the circulatory system are absent.
10. They excrete and respire through simple diffusion.
11. The mode of reproduction is asexual, which is through budding.
12. The sexual mode of reproduction is seen only in a few Coelenterates.
13. Example- Sea anemone, Sea-pen.