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The anther is made up of an outer epidermis, a middle fibrous layer, and an inner nutritive layer, the tapetum.
花药壁由外表皮层,中间纤维层,内部营养层和绒毡层构成。
youdao
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The anther is made up of an outer epidermis, a middle fibrous layer, and an inner nutritive layer, the tapetum.
花药壁由外表皮层,中间纤维层,内部营养层和绒毡层构成。
youdao