MCQ
Which of them is not an extrinsic factor?
- ALight, $O_2 $
- BTemperature, $CO_2 $
- CNutrient, water
- ✓Growth regulator and genetic factor
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$I$. From the region of elongation, some of the epidermal cells from root hairs.
$II$. Pneumatophores are seen in Rhizophora.
$III$. Adventitious roots are seen in the banyan tree.
$IV$. Maize and sugarcane have prop roots.
| Column $- I$ | Column $- II$ |
| $(1)$ Marginal | $(p)$ Argemone |
| $(2)$ Axile | $(q)$ Dianthus |
| $(3)$ Parietal | $(r)$ Pea |
| $(4)$ Free central | $(s)$ Lemon |