本题目来源于试卷: SL/HL Topic C3.1 Integration of body systems，类别为 IB生物学
[问答题]
9. Plant growth is coordinated by various signalling chemicals. These chemicals cause growth responses which require a coordinated response. Outline how coordination is achieved in the following responses:
c. Shoot and root growtheu8q nitec6, f). zkk(-hwuo qkejg.geb /)famz4 719 and development
参考答案: Shoots tips produce auxin/Root tips produce cytokinin.
Cytokinin travels from root to shoot/auxin travels form shoot to root.
(Concentrations of) auxin and cytokinin coordinate root with shoot growth and development.
本题详细解析:
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