Question:
Which of the following combinations are correct?
(I) Cnidaria - Coral formation - Gorgonia
(II) Ctenophora - Comb plates - Pleurobrachia
(III) Nematoda - Renette gland - Neometra
(IV) Mollusca - Radula - Pila
Which of the following combinations are correct?
(I) Cnidaria - Coral formation - Gorgonia
(II) Ctenophora - Comb plates - Pleurobrachia
(III) Nematoda - Renette gland - Neometra
(IV) Mollusca - Radula - Pila
(I) Cnidaria - Coral formation - Gorgonia
(II) Ctenophora - Comb plates - Pleurobrachia
(III) Nematoda - Renette gland - Neometra
(IV) Mollusca - Radula - Pila
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Radula is the unique rasping organ found in Mollusca!
Updated On: Jun 10, 2026
- I and II
- I, II and IV
- II, III and IV
- III and IV
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
Characteristics of different animal phyla.
Step 2: Analysis
* (I) Correct: Cnidarians like *Gorgonia* are involved in coral formation. * (II) Correct: Ctenophores have unique comb plates, seen in *Pleurobrachia*. * (III) Incorrect: Nematodes use renette glands for excretion, but the example *Neometra* is not a classic nematoda example (it is usually associated with echinoderms). * (IV) Correct: Molluscs possess a radula for feeding, as seen in *Pila*.
Step 3: Conclusion
Combinations I, II, and IV are correct.
Final Answer: (B)
Characteristics of different animal phyla.
Step 2: Analysis
* (I) Correct: Cnidarians like *Gorgonia* are involved in coral formation. * (II) Correct: Ctenophores have unique comb plates, seen in *Pleurobrachia*. * (III) Incorrect: Nematodes use renette glands for excretion, but the example *Neometra* is not a classic nematoda example (it is usually associated with echinoderms). * (IV) Correct: Molluscs possess a radula for feeding, as seen in *Pila*.
Step 3: Conclusion
Combinations I, II, and IV are correct.
Final Answer: (B)
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