Question

How does nutrition takes place in bud of hydra?

Answer 1

Hydra is a simple, multicellular animal. It has a number of tentacles around its mouth, which are used for ingestion of food. The tentacles entangle small aquatic animals and kill them with their stinging cells. They then push them into the mouth. Inside the body cavity the digestive juices secreted by the surrounding cells help to digest the food. This is then absorbed through the cavity walls and assimilated in the cells.