1.

Plant hormones are organic compounds influencing growth and development. One of the hormones was first isolated from human urine and other is a gaseous hormone. (a) Name the two hormones. (b) Write any two functions of these hormones.

Answer»

(a) Auxin and Ethylene

(b) Auxin : Initiate rooting in the stem cuttings 

: promotes flowering in pineapple

Ethylene : Promote rapid internode elongation in deep water rice plants

: Promotes the development of female flower in cucumber and increase the yield



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