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NEET2026Biology
Q.

Choose the correct statements regarding population interactions between two species.

A. In both parasitism and commensalism, only one species benefits and the other species is harmed.

B. Both species benefit in mutualism.

C. Both species benefit in commensalism.

D. In parasitism, only one species benefits and the other species is harmed.

E. In amensalism, one species is harmed and the other is unaffected.

Choose the correct answer from the options given below:

  1. A

    B and E only

  2. B

    A and B only

  3. C

    B, D and E only

  4. D

    A and D only

Solution

In parasitism, one species is benefited and the other is harmed (D correct). In commensalism one species is benefited while the other is unaffected, so A is wrong (the other is unaffected, not harmed) and C is wrong (only one benefits, not both).

Both species benefit in mutualism (B correct), and in amensalism one species is harmed while the other is unaffected (E correct).

Correct set: B, D and E.

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