In the Fillicales the leptosporangium has a specialized spore dispersal mechanism involving an annulus of cells with thick walls that ejects s pores explosively as it dries out.

 
  • 蕨類(lèi)植物中薄囊蕨有一個(gè)專(zhuān)門(mén)的孢子傳播裝置,在孢子囊壁的部分細胞壁上不均勻加厚成環(huán)帶,當孢子成熟后將其散射出。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan