Biology PYQ 92 of 503 · Plant Tissues & Anatomy

Why is grafting not possible in monocots?

  1. ABecause they do not have venation
  2. BBecause they are herbaceous
  3. CBecause they have parallel venation
  4. DBecause they lack cambium

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Correct answer: (d) Because they lack cambium

Explanation

Grafting needs the cambium of the stock and the scion to join and grow together, so that the vascular tissues of the two parts unite.

Monocots (such as grasses, maize and bamboo) have scattered vascular bundles without cambium (closed bundles). With no cambium to make new joining tissue, the two parts cannot unite, so grafting does not succeed. Their parallel venation has nothing to do with it.

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