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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development1 Mark
MCQ
Which hormone promotes rooting in cuttings:
  • A
    Gibberellin
  • B
    Cytokinin
  • C
    Auxin
  • D
    None of the above
✓

Answer

  1. Auxin

Explanation:

Auxin promotes rooting for the cuttings.NAA is a prominent auxin which is used to promote rooting in stem cuttings.NAA is known as naphthalene acetic acid.It is a synthetic auxin which promotes rooting in dwarf plants or stem.It also decreases the rate of senescence and abscission.It promotes respiration and increases the rate of metabolism.It increases the sweetening in certain fruits.

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