Column I | Column II | ||
(i) | Mutualism | (p) | Beneficial to a, no effect for b |
(ii) | Competition | (q) | Be neficial to both a and b |
(iii) | Parasitism | (r) | Beneficial to a and inhibitory for b |
(iv) | Predation | (s) | Beneficial to a and harmful for b |
(v) | Commensalism | (t) | Harmful to both a and b |