[Campbell Biology P.895] Considering the functions listed in Table 39.1, which pair of plant... | Practice Question

Considering the functions listed in Table 39.1, which pair of plant hormones often have antagonistic effects, particularly regarding seed physiology?

  • A: Auxin and Cytokinins
  • B: Gibberellins (GA) and Abscisic acid (ABA)
  • C: Ethylene and Brassinosteroids
  • D: Jasmonates and Strigolactones

Explanation

Abscisic acid ABA is known to promote seed dormancy and inhibit early germination, while Gibberellins GA are known to stimulate seed germination. This makes them a classic antagonistic pair in seed physiology, as explicitly stated in Table 39.1.