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| $A. +/+$ | $I. \text{શિકાર (Predation)}$ |
| $B. -/-$ | $II. \text{અમેન્સાલિઝમ (Ammensalism)}$ |
| $C. +/-$ | $III. \text{સ્પર્ધા (Competition)}$ |
| $D. -/0$ | $IV. \text{સહજીવન (Mutualism)}$ |
| કોલમ-$I$ | કોલમ-$II$ |
| $(a)$ યુક્કા ફૂદા | $(i) \,(+, 0)$ |
| $(b)$ ઓર્કિડ | $(ii) \,(+, -)$ |
| $(c)$ હર્મિટ કરચલો | $(iii) \,(+, +)$ |
| $(d)$ પ્લાઝમોડિયમ | $(iv) \,(+, -)$ |
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