MCQ
Example of a homologous organ:
- AThe arm of a human, wing of a bird.
- BWing of an insect, wing of a bird.
- CLeg of a dog, leg of a spider.
- DNone of the above.
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$A.$ Gonorrhoea $B.$ Syphilis $C.$ Chlamydia $D.$ Genital herpes
| Column - $I$ | Column - $II$ |
| $(a)$ Herbivores-Plants | $(i)$ Commensalism |
| $(b)$ Mycorrhiza-Plants | $(ii)$ Mutualism |
| $(c)$ Sheep-Cattle | $(iii)$ Predation |
| $(d)$ Orchid-Tree | $(iv)$ Competition |