EVERYDAY SCIENCE

Detailed explanation-1: -In cnidarians, the gastrovascular system is also known as the coelenteron, and is commonly known as a “blind gut” or “blind sac", since food enters and waste exits through the same orifice.

Detailed explanation-2: -Gastrovascular cavity form the main organ of the digestive system. They are mainly found in phylum coelenterates or cnidarians. It is mainly involves in digestion and circulations. In coelenterates, gastrovascular cavity is called blind sac as the food passage and waste outlet has the same orifice.

Detailed explanation-3: -As in the Cnidaria, the gut is a gastrovascular cavity and has the functions of both digestion and circulation; the mouth serves as both entrance and exit from the gut.

Detailed explanation-4: -The gastrovascular cavity is the major site for food digestion and nutrient absorption in cnidarians. Food passes through the mouth and enters the cavity. Inside the gastrovascular cavity, a cell membrane wraps around food particles and then takes them to the interior cavity.

Detailed explanation-5: -The inner layer, the endoderm, has cells that produce digestive enzymes and break up food particles. The jellylike material between the two layers is called the mesoglea. All of these body layers surround a central cavity called the gastrovascular cavity, which extends into the hollow tentacles (Fig.