MCQ
Agar is commercially obtained from:
- ✓Red algae.
- BGreen algae.
- CBrown algae.
- DBlue$-$green algae.
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| Column $I$ | Column $II$ |
| $a.$ Auxin | $(i)$ Root hair formation |
| $b.$ Cytokinin | $(ii)$ Seed development |
| $c.$ Ethylene | $(iii)$ Xylem differentiation |
| $d.$ $ABA$ | $(iv)$ Nutrient mobilisation |