Question

Plants deficient of element zinc, show its effect
on the biosynthesis of plant growth hormone
(a) abscisic acid (b) auxin
(c) cytokinin (d) ethylene

Answer 1

Answer:

auxin is for the plant growth

Answer 2

The correct option is option b) auxin.

Explanation:

• Zinc is one of the micronutrients needed by plants which helps in performing variety of functions in plants including production of auxin, and elongation of plants.
• The correlation between zinc and plant hormone auxin was made by Skoog in 1940.
• He found out that tomato plants growing in zinc deficient soil did not elongated and that the auxin content of the plants are very low.
• The deficiency of zinc in plants can cause the reduction in the height of plants.
• It also forms distorted leaves which hampers the process of photosynthesis, and ultimately the plants die.
• It leads to huge loss in crop yields and productivity