EVERYDAY SCIENCE

Detailed explanation-1: -The class Anthozoa (under the phylum Cnidaria) includes corals, anemones, sea pens and seafans. Anthozoa consists of 10 orders and thousands of species. Adults are attached to the seabed, but their larvae are free-floating and can drift to new settlements.

Detailed explanation-2: -Key Points. Anthozoans include sea anemones, sea pens, and corals. The pharynx of anthozoans (ingesting as well as egesting food) leads to the gastrovascular cavity, which is divided by mesenteries.

Detailed explanation-3: -Anthozoans include sea anemones, a variety of corals, sea fans, and sea pens.

Detailed explanation-4: -The phylum Cnidaria includes anemones, corals, jellyfish (including box jellyfish), and hydras. Sea anemones, named after a terrestrial flower, have a basic radial symmetry with tentacles that surround a central mouth opening. The tentacles are used to catch food and transfer it to their mouth.