MCQ
Strands of $DNA$ are bonded by
- ✓Hydrogen
- BCarbon
- COxygen
- DNitrogen
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.


| Column-$I$ | Column-$II$ |
| $a.$ Aestivation | $(i)$ Over wintering |
| $b$. Hibernation | $(ii)$ Over summer |
| $c.$ Diapause | $(iii)$ Suspended development in zooplanktons |