Question
During a Zoology practical, a large opening at the top of a sponge releases filtered water back to the environment. Select the most accurate identification.
Correct Answer: A
osculum
The osculum is the large excurrent opening of a sponge. Water enters through many small ostia, passes through internal chambers, and exits through the osculum. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
The osculum is the large excurrent opening of a sponge. Water enters through many small ostia, passes through internal chambers, and exits through the osculum. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
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