Q22 / 180 · AIIMS 2008 · Botany

Assertion : The primary protenema of moss by death and decay of cells may break into fragments. Reason : Each fragment gives rise to leafy gametophyte.

  • 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

The haploid spores on germination gives rise to alga-like filamentous branched portion called primary protonema. This protonema develops buds, from which leafy gametophyte arises. Sometimes this primary protonema breaks up into small fragments accidentally and these fragments give rise to leafy gametophores.

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

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