Sample Questions — Porifera
Try 5 questions below from Porifera. Get all 10 in the MedicNEET app.
MCQ
In a sponge body plan, which structure represents the point of water expulsion?
✅ Correct Answer: C
The osculum is the large opening at the top of a sponge where water exits.
MCQ
Assertion (A): Canal system in sponges helps in food gathering, respiratory exchange, and removal of waste.
Reason (R): Water enters sponges through the osculum and exits via ostia.
✅ Correct Answer: C
Water enters through ostia (small pores), circulates in canals, and exits via the osculum. So R is incorrect in direction, but A is correct.
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MCQ
Identify the correct set of statements about Porifera:
1. They are exclusively freshwater animals.
2. They are diploblastic and acoelomate.
3. Digestion is intracellular.
4. Reproduction includes both asexual and sexual modes.
✅ Correct Answer: C
They are mostly marine, not freshwater. They are multicellular but not diploblastic or triploblastic in the traditional sense as they lack tissue organisation.
MCQ
Which of the following describes the skeleton of Porifera?
✅ Correct Answer: B
Porifera have skeletons made of spicules of calcium carbonate or silica.
MCQ
Which of the following terms best describes Porifera?
✅ Correct Answer: D
Sponges are non-motile and show a cellular level of organisation.
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