hypocotyl 的定义
Botany.
- the part of a plant embryo directly below the cotyledons, forming a connection with the radicle.
更多hypocotyl例句
- Below the sheathing leaf is a narrow length which will be distinguished as the hypocotyl, and where growth is very active.
- A lens focusses the light from O, on the hypocotyl, and that from O', on the tip of the cotyledon.
- Contrary to generally accepted view the hypocotyl not only perceives but responds to light.
- If the cotyledon be shaded and the light be permitted to fall on one side of the hypocotyl, no heliotropic curving takes place.
- Hence considerable doubt may be entertained as regards the supposed absence of perception in the hypocotyl of Setaria.