NEET BIOLOGY

Detailed explanation-1: -Cnidarians are soft-bodied animals that include corals, jellyfish, and sea anemones. These soft-bodied animals have saclike digestive cavities and tentacles containing rows or stinging cells used for defense and capture of food.

Detailed explanation-2: -Cnidarians have two body forms-polyp and medusa-which often occur within the life cycle of a single cnidarian. The body of a medusa, commonly called a jellyfish, usually has the shape of a bell or an umbrella, with tentacles hanging downward at the margin.

Detailed explanation-3: -Jellyfish, corals, and other stingers The name Cnidaria comes from the Greek word “cnidos, ” which means stinging nettle. Casually touching many cnidarians will make it clear how they got their name when their nematocysts eject barbed threads tipped with poison.