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Question

Match List-I with List-II.

List-IList-II
A. Both species are harmedI. Predation
B. One species is harmed and the other is benefitedII. Mutualism
C. Both species are benefitedIII. Competition
D. One is benefited while the other has no effectIV. Commensalism


Choose the correct answer from the options given below :

This question was previously asked in
NEET UG Re-Exam 2026 Question Paper (21-Jun-2026)
The correct answer is
A-III, B-I, C-II, D-IV

Ecological Interactions Matching

This question requires matching ecological interaction types with descriptions of their effects on the participating species.

Matching Interaction Types and Species Effects

  • Competition (A): Occurs when two or more species require the same limited resource. This interaction harms both species involved as they compete for survival or reproduction. This corresponds to option III.
  • Predation (I): Involves one organism (predator) hunting and killing another organism (prey) for food. The predator benefits, while the prey is harmed. This corresponds to option I.
  • Mutualism (II): A relationship where both species benefit from the interaction. Examples include pollination where the pollinator gets food and the plant gets pollinated. This corresponds to option II.
  • Commensalism (IV): A symbiotic relationship where one species benefits, and the other species is neither harmed nor benefited. An example is barnacles attached to a whale; the barnacles get a place to live and feed, while the whale is unaffected. This corresponds to option IV.

Correct Match Summary

Based on the analysis:

  • A (Both species are harmed) matches with III (Competition).
  • B (One species is harmed and the other is benefited) matches with I (Predation).
  • C (Both species are benefited) matches with II (Mutualism).
  • D (One is benefited while the other has no effect) matches with IV (Commensalism).

Therefore, the correct combination is A-III, B-I, C-II, D-IV.

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