episperm是什么意思,episperm的意思翻译、用法、同义词、例句
常用词典
种皮
例句
Difference of cell arrangement and shape of episperm, mesosperm and endopleura became obvious during seed development.
在种实发育过程中,外种皮、中种皮和内种皮细胞排列及形状的差异逐渐明显。
网络扩展资料
词性:名词
发音: /ˈepɪspəm/
定义:种子的外层壳,包裹着种子内部的胚乳。
用法:在植物学中常用该词汇来描述种子结构。
解释:episperm是种子的一个部分,它是由种皮细胞形成的一层坚硬的外壳。在成熟的种子中,胚乳被包裹在episperm内部。episperm的厚度和硬度因不同植物而异。
近义词:testa
反义词:胚乳
例句:
- The episperm of a coconut is very hard and is often used as a material for handicrafts.(椰子的种皮非常坚硬,常被用作手工艺品的材料。)
- The episperm protects the embryo from external damage and helps in the dispersal of seeds.(种皮保护胚胎不受外界损伤,并有助于种子的传播。)
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