Question

name the body structures with the help of which a hydra and an amoeba obtain or ingest their food​

Answer 1

Answer:

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.

Hydra capture their food by paralyzing and killing the food organism by means of nematocysts, which are discharged into the prey. The prey is brought to the mouth (proctostome) by the tentacles, a response that is induced glutathione. This is considered the key mechanism in digestion.

Explanation:

hope help u

Answer 2

Answer:

Amoeba is an organism made up of a single cell. It is usually found in ponds and ditches. Its food consists of the microscopic organisms found in these water bodies. It does not have a very structured body.

When Amoeba senses food, it forms finger-like projections called pseudopodia (pseudo, false; podium, foot), which completely enclose the food, resulting in the formation of a space or cavity called a food vacuole (Fig. 2.1). Some digestive juices are secreted in the food vacuole and the food is digested there. It is then absorbed and assimilated, and the undigested part is thrown out.