A very tall plant with fewer lateral branches will have auxin:cytokinin ratio of. A. 2:1. B. 1:1. C. 1:2. D. 3:4. answer it fast nd if possible give reason also
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Answer: The correct answer is- A. 2:1.
Cytokinin and auxin are the class of phytohormones that have significant role in plant growth.
Cytokinin is necessary for cell division, morphogenesis of root and shoot, growth of lateral bud.
Auxin is an essential hormone that is involved in the elongation of plant ( that is increase in height) through apical dominance ( that is apical bud inhibiting the lateral growth).
Since, plant is very tall with fewer lateral branches.
This means that auxin is more than the cytokinin concentration.
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