Question

Mention any six characteristics of phylum Coelenterata.

Answer 1

Phylum Coelenterata:

1. It belongs to the Kingdom Animalia.
2. These species are usually found in saltwater, with only a few exceptions living in freshwater.
3. Their body is comprised of two compartments: one covering makes up the cells on the body's surface, while the other covering makes up the cells on the interior.
4. Examples: - Jellyfish (Aurelia), Hydra, Obelia, Coral, Physalia (Portuguese man of war) and Sea anemones.

Characteristics of phylum Coelenterata:

1. They are symmetrical in all directions.
2. These are known as sessile or free-swimming fish.
3. They demonstrate a diploblastic tissue degree of organization.
4. Cnidoblasts are stinging cells found in the body walls and tentacles that aid in anchoring and are employed for defense or offense.
5. Digestion is both extracellular and intracellular.
6. Some of these animals dwell in groups (corals), while others live alone (Hydra).