Question

The structure that is spengu in​

Answer 1

Answer:

Incurrent Incurrent canals are the openings in the body of sponges through which water enters from outside.

B. Ostia (singular: ostium) are the inhalant pores in sponges through which water enters the body.

C. Osculum are the exhalent pores in sponges through which water flows out of the body.

D. Excurrent canals are the openings in the body of sponges through which water flows out.

Hence, in sponges, ostium corresponds to the mouth of other animals, as it is the entry point for water in sponges.

So, the correct answer is 'Ostium'.