知识贝壳
知识贝壳
所属栏目：英汉双解细胞与分子生物学
The shedding of part of a plant,usually a leaf,fruit,or unfertilized flower,aspart of the plants usual life cycle. As the leafor other organ ages,a distinct abscission zonedevelops at the base of the organ. This zoneconsists of relatively smaller cells,wh ......（本文共 673 字 ） [阅读本文]>>