MCQ
The effect of oxygen supply on growth is
- ✓Positive
- BNegative
- CIn some plants it is positive while in others it is negative
- DNone of the above
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$R -$ All organisms doing asexual reproduction.
Assertion $A$ : The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason $R$: Protonema develops directly from spores produced in capsule.
In the light of the above statements, choose the most appropriate answer from options given below:
| Column - $I$ | Column - $II$ |
| $(i)$ Tap root | $(a)$ Sweet potato |
| $(ii)$ Adventitious root | $(b)$ Turnip |
| $(iii)$ Stem | $(c)$ Wheat |
| $(iv)$ Fibrous root | $(d)$ Potato |