Question

What are functions of tentacles in hydra

Answer 1

Explanation:

The tentacles contain a large number of specialized cells called cnidocytes, which contain stinging structures known as nematocysts. The latter vary in shape according to their required purpose. Most have an oval shaped base, attached to a long threadlike structure. When the animal is feeding or is alarmed, the cnidocytes are triggered to release the nematocysts. When the animals is feeding, most of the nematocysts that are released are hollow and elongate, their purpose being to trap and entangle prey. Once this has been completed, the captured prey—often small crustaceans—are grasped by the tentacles and passed down towards the mouth.