Question
One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third hormone increases the tolerance of plants to various stresses. They are respectively
Gibberellin, Auxin, Ethylene
Auxin, Gibberellin, Cytokinin
Gibberellin, Auxin, ABA
Auxin, Gibberellin, ABA
Solution
C.
Gibberellin, Auxin, ABA
Spraying juvenile conifers with gibberellins hastens their maturity period, thus leading to early seed production. Auxin controls xylem differentiation. Abscisic acid (ABA) increases the tolerance ofplants to various kinds ofstresses therefore, is also known as stress hormone.
