Q.

In cnidarians digestion occurs in gastrovascular cavity and then inside the endodermal cells. In sponges the digestion is __ A__ and takes place in __B__ . Correct option for blanks A and B is

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a

A – intracellular
B – choanocytes

b

A – extracellular and intracellular
B – paragastric cavity and choanocytes

c

A – extracellular
B – paragastric cavity

d

A – intracellular
B – paragastric cavity

answer is B.

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Detailed Solution

Sponges are suspension feeders (filter feeders). Digestion is intracellular, and takes place in choanocytes and archaeocytes.

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In cnidarians digestion occurs in gastrovascular cavity and then inside the endodermal cells. In sponges the digestion is __ A__ and takes place in __B__ . Correct option for blanks A and B is