Question

Digestion pattern in

• A. Porifera is intracellular and in Coelenterata, it is both intra and extracellular
• B. Porifera and Coelenterata is extracellular and intracellular, respectively
• C. Porifera and Coelenterata is intracellular and extracellular, respectively
• D. Porifera and Coelenterata is both intracellular and extracellular

Answer 1

The correct option is A Porifera is intracellular and in Coelenterata, it is both intra and extracellular

If the digestion takes place within the cell then it is called intracellular digestion. If the digestion takes place outside the cell it is called extracellular digestion.
Both Porifera and Coelenterata have an incomplete digestive system. Digestion pattern in Porifera is intracellular. Whereas in Coelenterata, it is both intra and extracellular.

Cnidarians pull their prey into the mouth and into the gastrovascular cavity after paralyzing them. Cnidarians perform extracellular digestion, with digestion completed by intracellular digestive processes. Food is taken into the gastrovascular cavity, enzymes are secreted into the cavity, and the cells lining the cavity absorb the nutrient products of the extracellular digestive process.