| Column-$I$ | Column-$II$ |
| $P. +,+$ | $I. \text{Mutualism}$ |
| $Q. -,-$ | $II. \text{Parasitism}$ |
| $R. -,0$ | $III. \text{Competition}$ |
| $S. +,0$ | $IV. \text{Amensalism}$ |
| $T. +,-$ | $V. \text{Commensalism}$ |
| $VI. \text{Predation}$ |
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| Interaction between Species $A$ and Species $B$ | Type of interaction |
| $+$,$-$ | $P$ |
| $-$,$-$ | $Q$ |
| $+$,$0$ | $R$ |
| $-$,$0$ | $S$ |
| Column-$I$ | Column-$II$ |
| $(a)$ Herbivores-Plants | $(i)$ Commensalism |
| $(b)$ Mycorrhiza-Plants | $(ii)$ Mutualism |
| $(c)$ Sheep-Cattle | $(iii)$ Predation |
| $(d)$ Orchid-Tree | $(iv)$ Competition |
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