Which of the following option shows a pair of antagonist phytohormones with respect to the given feature?

Question

Which of the following option shows a pair of antagonist phytohormones with respect to the given feature? (A) Parthenocarpy: Auxin antagonist to Gibberellin (B) Abscission: Ethylene antagonist to Abscisic acid (C) Seed Germination: Gibberellin antagonist to Abscisic acid (D) Senescence: Gibberellin antagonist to Cytokinin

Tardigrade Admin · Accepted Answer

Both auxin and gibberellin can promote parthenocarpy. Both ethylene and abscisic acid promote abscission. Both gibberellin and cytokinin delay senescence. However, gibberellin promotes seed germination while Abscisic acid inhibits seed germination. Thus, they are antagonistic.

Q. Which of the following option shows a pair of antagonist phytohormones with respect to the given feature?

Parthenocarpy: Auxin antagonist to Gibberellin

Abscission: Ethylene antagonist to Abscisic acid

Seed Germination: Gibberellin antagonist to Abscisic acid

Senescence: Gibberellin antagonist to Cytokinin

Both auxin and gibberellin can promote parthenocarpy. Both ethylene and abscisic acid promote abscission. Both gibberellin and cytokinin delay senescence. However, gibberellin promotes seed germination while Abscisic acid inhibits seed germination. Thus, they are antagonistic.