試題詳解

複選題
19. Which statement regarding plant auxin is correct?
(A) It is synthesized in active growing cells and transported up or down to promote cell growth.
(B) The antagonistic interactions between cytokinin and auxin shape the morphology of shoots.
(C) Accumulation of auxin in axillary buds will promote lateral shoot development.
(D) When the sunlight shines on the stem with an angle, auxin will accumulate in the lighting side of the stem to promote cell elongation.
(E) In response to gravity, auxin will accumulate in the upper side of roots to promote cell elongation.