知識貝殼
知識貝殼
所屬欄目：英漢雙解細胞與分子生物學(xué)
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 ） [閱讀本文] >>