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Q.

Study the following statements
I)’X’ hormone promotes root growth and root hair formation thus helping the plants to increase their absorption surface
II) ‘Y’ hormone induces flowering in mango and also promotes rapid internode/petiole elongation in deep plants and hence helping leaves or upper parts of shoo above water
III) ‘Z’ hormone inhibits the seed germination, increase the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.
Identify the correct names of hormones marked as ‘X’,’Y’ and ‘Z’

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a

Y=ABA; X = Auxin; Z = GA

b

Z=GA;X= Auxin; Y=C2H4

c

Y=Auxin, X = C2H4;Z=GA

d

Y=C2H4,X=C2H4;Z=ABA

answer is D.

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Detailed Solution

Y=C2H4, Ethylene

X=C2H4, Ethylene 

Z=ABA

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