Question

What is the function of the gastrovascular cavity?

Answer 1

Hint: Hydrozoa is a class of coelenterata phylum and incorporates marine creatures like Hydra. They have appendages to get a handle on food material. They feed on little living beings and have a straightforward gastro-vascular cavity covered with flogged cells which help available for use of food.

Complete answer:
Entry of food and exit of waste materials takes place through this single opening mouth. The gastro-vascular cavity is called so because it helps in the digestion of food as well as in the circulation of materials. Gastrovascular cavity is an organ of absorption and dissemination in Coelenterates (Hydra, jellyfish, and so forth) and Platyhelminthes (tapeworm, liver accident, and so on) In coelenterates, the focal gastro-vascular cavity has a solitary opening for example mouth, and is known as coelenteron. Actinozoa is a class of marine coelenterates wherein the incipient organisms are isolated from the body and move out through oral gap. Actinozoan incorporates corals, ocean anemones, and so forth. They are sessile (non-motile) and are lone and provincial polyps. They have a barrel shaped body; the oral end being suspended radially into an oral circle. All around the mouth, empty appendages are available. There are around 6000 types of actinozoa present around the world. In actinozoa, the gastro-vascular cavity is parceled, and frames total or deficient septa or mesenteries (folds in the layer).
In actionzoa, the medusoid stage is stifled totally and day to day routines as polyps for the duration of their lives. Notwithstanding, they discharge eggs just as sperms that append to a substrate where they further develop. They can likewise repeat abiogenetically through the way toward sprouting.

Note:
Scyphozoa are additionally marine and generally free-swimming organic entities. They are the genuine jellyfish having around 170 species. They live either singularly or in states. They have four to eight arms suspended from the mouth. There is a solitary opening for both food and waste as they have no stomach related plot.