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Apical dominance is dicot plants is due ...

Apical dominance is dicot plants is due to the presence of more_____in the apical bud then in the lateral ones.

A

auxins

B

cytockinins

C

gibberellins

D

ethylene

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The correct Answer is:
A
Apical dominance is the phenomenon by which presence of apical bud does not allow the nearby lateral buds to grow. When the apical bud is removed, the lateral buds sprout. Apical bud inhibits the growth of lateral buds by releasing auxins. When a plant is decapitated i.e., its apical bud is removed then the lateral buds sprout, resulting in dense bushy growth. This phenomenon is widely used in the tea plucking and hedge making.
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Fill in the places with appropriate word/ words. (a)A phase of growth which is maximum and fastest is ………. (b)Apical domince as expressed in dictyledonous plants is due to the presence of more……. In the apical buyd than in the lateral ones (c )In additon to lauxin a……. Must be supplied to culture medium to obtain a good callus in plant tissue culture (d)…………of a vegetative plants are the sites of photperiodic perception.

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NCERT FINGERTIPS-PLANT GROWTH AND DEVELOPMENT-Plant Growth And Development
  1. Which of the following hormones is used in root formation on stem cutt...

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  2. Select the correct statements (s) regarding auxins.

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  3. Apical dominance is dicot plants is due to the presence of morein the ...

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  4. The term 'auxin precursor' refers to

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  5. Read the given statements and select the correct option. (i) Darwin ...

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  6. In the process of apical dominance, lateral buds are unable to grow in...

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  7. Decapitation i.e. removal of shoot tips in a plant usually results in

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  8. In tea plantations and hedge making, gardeners trim the plants regular...

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  9. Removal of auxin source demonstrates that leaf abscission is by auxin,...

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  10. The hormone responsible for apical dominance is

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  11. Functions of auxins include

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  12. To get a carpet like grass, lawns are mowed regularly, this is done to

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  13. Arificial application of auxins like IA A, IBA and NA A to unpollinate...

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  14. The term 'antiauxin' refers to

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  15. Which of the following statements regarding gibberellins is incorrect?

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  16. The fruits can be left on the three longer using GA so as to extend th...

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  17. To speed up the malting process in brewing industry the growth hormone...

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  18. Read the given statements and select the correct option. statement 1...

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  19. Spraying sugarcane with gibberellins increases the yield by as much as...

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  20. Dwarfness can be controlled by treating the plant with

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