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Plant Growth and Development

AIPMT 2000MCQEasy📈 Topic in 50% papers+4−1
Ques. 1AIPMT 2000

If the apical bud has been removed then we observe

  1. more lateral branches
  2. more axillary buds
  3. plant growing stops
  4. flowering stops

Answer

(1) more lateral branches

Solution

As per NCERT, the growing apical bud inhibits the growth of the lateral (axillary) buds; this is called apical dominance and is caused by auxin.

∴ When the shoot tip is removed (decapitation), the axillary buds already present grow out, giving more lateral branches (used in tea plantations and hedge-making).

Answer: (1)

Keep practising — Plant Growth and Development

Ques. 2AIPMT 2000

By which action a seed coat becomes permeable to water?

  1. scarification
  2. stratification
  3. vernalization
  4. all of the above
Ques. 3AIPMT 2000

Which hormone is responsible for fruit ripening?

  1. Ethylene
  2. Auxin
  3. Ethyl chloride
  4. Cytokinin
Ques. 4AIPMT 2000

Coconut milk is used in tissue culture because it contains

  1. Auxin
  2. Gibberellin
  3. Ethylene
  4. Cytokinin
Out of syllabus

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
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Other chaptersBiomolecules (Biology)