MCQ
Contraction of heart is:
- ADiastole
- ✓Systole
- CJoint diastole
- DNone of the above
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Column $I$ | Column $II$ |
| ($a$) Fruit ripener | ($i$) Abscisic acid |
| ($b$) Herbicide | ($ii$) Polysaccharide |
| ($c$) Bolting agent | ($iii$) $GA _{3}$ |
| ($d$) Stress hormone | ($iv$) Ethephon |
Select the correct option from following