Question
The prothallus of fern is
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| 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