植物生长之谜

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植物生长之谜“春种一粒粟,秋收万颗籽。”一粒种子入土,不几天,晶莹白嫩的玉芽就会脱壳而出,开始植物的一段精彩的生命。从种子到玉芽,从玉芽到伸展出绿叶,细小的种子变成了一株幼苗……从幼苗到长成一棵高大的植株,这里包含着多少科学的奥秘与大自然的神奇!植物
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