試題詳解

10. Plants growing in a partially dark environment will grow toward light in a response called phototropism. Choose the incorrect statement regarding phototropism.
(A) It is caused by a chemical signal.
(B) One chemical involved is auxin.
(C) Auxin causes a growth increase on one side of the stem.
(D) Auxin causes a decrease in growth on the side of the stem exposed to light.
(E) Removing the apical meristem prevents phototropism.