Match List-I with List-II
| List-I | List-II |
|---|---|
| Signs of Interspecific Interactions (Between Species A and B) | Population Interactions |
| (A) +/- | (I) Commensalism |
| (B) +/+ | (II) Parasitism |
| (C) +/0 | (III) Amensalism |
| (D) -/0 | (IV) Mutualism |
'+sign for beneficial interaction, '-' sign for detrimental interaction and '0' for neutral interaction.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
(A) +/- — this matches (II) Parasitism. One species gains and the other is harmed. The parasite lives on or in the host and takes its food from it, as a tapeworm does in the human gut. Predation is also a +/- interaction.
(B) +/+ — this matches (IV) Mutualism. Both species gain. In a lichen, the fungus gives shelter and absorbs water and minerals, while the alga makes food by photosynthesis.
(C) +/0 — this matches (I) Commensalism. One species gains and the other is neither harmed nor helped. An orchid growing as an epiphyte on a mango branch gets a place in the light, and the mango tree is not affected.
(D) -/0 — this matches (III) Amensalism. One species is harmed and the other is not affected.
Note: A similar question was also asked in CUET (UG) 2025 on 02-06-2025 (Slot 2), on 29-05-2025 (Slot 1) and on 28-05-2025 (Slot 1).