Answer:
Plant hormone
Physiological
effect
A. Auxin
·
Synthesized in the young tip of roots and shoots. It diffuses
towards the shady side of plant which stimulates the cells to grow longer,
resulting in bending of shoot toward light
·
Promotes cell elongation and division
·
Play important role in formation of root
and seedless fruit
B. Bibberellin
·
Help in growth of stem and flower
·
Help in germination of seed
C. Cytokinins
·
Promote cell division and delay leaf ageing
·
Also stimulate leaf expansion
D. Abscisic Acid
·
Growth inhibitor
·
Reverses the growth promoting effects of auxins and
gibberellins
E. Ehtylene
·
Promotes transverse growth
·
Essential for fruit ripening, promotes
senescence and
abscission of leaves
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