Question

One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively

• A. Auxin, Gibberellins, Cytokinin
• B. Auxin, Gibberellins, ABA
• C. Gibberellin, Auxin, Cytokinin
• D. Gibberellin, Auxin, ABA

Answer 1

The correct option is D Gibberellin, Auxin, ABA

• Gibberellins are a group of plant hormones responsible for growth and development. So, it hastens the maturity period.
• Auxin is a plant hormone produced in the stem tip that promotes cell elongation by controlling xylem differentiation.
• The plant hormone abscisic acid (ABA) is the major player in mediating the adaptation of the plant to stress.

Thus, the correct answer is option D.