Phototropism of stem and geotropism of root are due to

Epinasty and hyponasty

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Effect of light

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Differential hormonal effect

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Graviception

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Solution

The correct option is C Differential hormonal effect
Phototropism of shoot and geotropism of root are due to several hormonal action. The hormones responsible include auxin plant hormone. Auxin is responsible for the growth of shoot positively phototrophic. Auxin also induces apical dominance in shoots.

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Similar questions

Stems are :

(a) positively geotropic and negatively phototropic

(b) positively geotropic and positively phototropic

(d) negatively phototropicand positively geotropic

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