Question

Sea anemone belongs to class
A Hydrozoa
B Anthozoa
C Scyphozoa
D None of the above

Answer 1

Hint Sea anemones are predatory marine creatures of the Actiniaria order. Because of their colourful look, they are called after the anemone, a terrestrial blooming plant.

Complete answer:
Hydrozoa are a taxonomic group of very small predatory animals that live in saline water, some solitary and some colonies. The colonies of colonial species can be rather vast, and certain specialised individual animals are unable to thrive outside of them.
A typical sea anemone is a single polyp with its base attached to a hard surface, however some species live in soft silt and others float near the water's surface. The polyp has a columnar stem with a central mouth and an oral disc with a ring of tentacles. The tentacles can be retracted or stretched to seize passing prey. They have cnidocytes (stinging cells) on their bodies.
Sea anemones, stony corals, and soft corals are all members of the Anthozoa class of marine invertebrates. Anthozoans are almost entirely linked to the seafloor as adults, although their larvae can disperse as plankton.
Scyphozoa, sometimes known as genuine jellyfish, are an entirely marine class of the phylum Cnidaria. It could include the Conulariida, an extinct fossil group whose relationships are unknown and hotly discussed.
Due to the flower-like appearance of the sedentary polyp forms, the sea anemone belongs to the Anthozoa class. Sea pen, sea pansies, and other cnidarians are featured in this category.

As a result, the right response is 'Anthozoa/Actinozoa.'So option B is correct.

Note: A symbiotic association with single-celled dinoflagellates, zooxanthellae, or green algae, zoochlorellae, that reside within the cells provides additional sustenance to many species. To their mutual benefit, certain sea anemone species coexist with hermit crabs, tiny fish, and other creatures.