Q14 / 180 · AIIMS 2013 · Botany

Assertion : On plotting the length of the root against time, a linear curve is obtained. Reason : An elongating root exemplifies arithmetic growth.

  • Correct answer
    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false
  • D
    If both assertion and reason are false

Solution

In arithmetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures. The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate. On plotting the length of the organ against time, a linear curve is obtained.

Hence, the correct answer is option: 'A'.

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