68. Most of the dry weight of a plant is the result of uptake of _____.
(A) carbohydrates in the root hairs and concentration in the root cortex
(B) water and minerals through root hairs
(C) water and minerals through mycorrhizae
(D) CO2 through stoma
(E) CO2 and O2 through stomata in leaves
阿摩線上測驗
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