alleryStart learning →A plant extends in length because of cell division in which tissue?
ALateral meristems at the stem sides
BApical meristems at stem and root tips
CPermanent tissue behind the root cap
DGround tissue inside the vascular ring
Answer & Solution
Correct answer: B. Apical meristems at stem and root tips
1. Extension in length comes from meristematic tissue at the tips of stems and roots.
2. That tissue is the apical meristem, so growth in length traces back to it.
3. Lateral meristems add thickness or girth instead, and permanent tissue has stopped dividing.
4. Ground tissue stores food and supports vascular tissue, so it does not drive elongation.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.1 The Plant Body_
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