Bioluminescence — the ability of a living organism to emit light — is well-marked in members of phylum
A{'text': 'Coelenterata', 'label': 'A'}
B{'text': 'Aschelminthes', 'label': 'B'}
C{'text': 'Platyhelminthes', 'label': 'C'}
D{'text': 'Ctenophora', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': 'Ctenophora', 'label': 'D'}
1. Ctenophora, or comb jellies, are exclusively marine diploblastic animals.
2. They possess eight rows of ciliated comb plates that aid locomotion.
3. Bioluminescence is a diagnostic feature of ctenophores.
4. Cnidarians can bioluminesce but not to the degree characteristic of ctenophores.
_Source: NCERT Class 11 Biology, Ch 4 "Animal Kingdom", §4.2.3_
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