NEET Biology question
Given below are some differences between an underground stem and a root. Select the option that identifies the incorrect pair(s) of differences.
| | Underground stem | Root | |---|---|---| | (i) | Differentiated into nodes and internodes | Not differentiated into nodes and internodes | | (ii) | Scale leaves present at the nodes | Scale leaves absent in roots | | (iii) | Axillary buds are present in the axil of scale leaves | Axillary buds are present at root tips | | (iv) | Branches arise exogenously | Branches arise endogenously | | (v) | Flowers and fruits are usually present | Flowers and fruits are absent | | (vi) | These usually perform the function of food storage | These always perform the function of food storage |
Solution
Rows (i), (ii) and (iv) are correctly stated true differences (underground stems do show nodes/internodes with scale leaves, and stem branches are exogenous while root branches are endogenous). Row (iii) is incorrect, since true roots never bear axillary buds at all — lateral roots instead originate internally from
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