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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development1 Mark
MCQ
Genetically dwarf plants can be induced to grown tall by using:
  • A
    Auxins
  • B
    Cytokinins
  • C
    Gibberellins
  • D
    Phycobillins
✓

Answer

  1. Gibberellins

Explanation:

Gibberellin is a plant hormone which is responsible for stem elongation by promoting cell division and elongation.

They are responsible for increased internodal length in a plant.

Auxins cause cell elongation and cell differentiation while cytokinins promote only cell division.

Phycobilins are pigments found in cyanobacteria which capture the light energy for photosynthesis in them.

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