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Moving back from the very tip of a root, in what order do the three zones occur?
AElongation, then cell division, then maturation
BMaturation, then elongation, then cell division
CCell division, then elongation, then maturation
DCell division, then maturation, then elongation
Answer & Solution
Correct answer: C. Cell division, then elongation, then maturation
1. The root tip divides into a zone of cell division, a zone of elongation, and a zone of maturation and differentiation.
2. The zone of cell division sits closest to the tip and holds the actively dividing cells of the root meristem.
3. The zone of elongation follows, where the newly formed cells increase in length and so lengthen the root.
4. The zone of maturation comes last, where cells differentiate into special cell types.
5. Any order that puts elongation or maturation nearest the tip reverses the sequence of division then growth then specialisation.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.3 Roots_
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