問題詳情
31. Why do many seeds contain oils form in a significant part of the nutritional reserves?
(A)Oils help keep the embryo hydrated, allowing the seed to survive in dry habitats
(B)The oilsreduce the density of the seed and allow for water dispersal
(C) Hormones diffuse more quicklythrough oils
(D)Oils store twice as much energy as an equivalent mass of starch
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增