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Commensalism is the interaction where one species benefits and the other is:
ANeither hollow nor hardened
BNeither helped nor harmed
CNeither hungry nor hunted
DNeither hidden nor haunted
Answer & Solution
Correct answer: B. Neither helped nor harmed
1. The six interactions differ in the sign for each partner.
2. In one of them the second partner is simply unaffected.
3. Commensalism is where one species benefits and the other is neither benefitted nor harmed.
4. The orchid on a mango branch is the example given.
_Source: NCERT Class XII Biology, Ch 11 'Organisms and Populations'_
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