rostellum 的定义
plural ros·tel·la [ro-stel-uh]. /rɒˈstɛl ə/.
- Biology. any small, beaklike process.
- Botany. a beaklike modification of the stigma in many orchids.
- Zoology. a projecting part of the scolex in certain tapeworms.a part of the mouth in many insects, designed for sucking.
更多rostellum例句
- I want to know whether anything beats in modification the rostellum of Catasetum.
- It is to discover whether rostellum yet retains some of its primordial function of being penetrated by pollen-tubes.
- Asa Gray's observations on the rostellum of Gymnadenia are very imperfect, yet worth looking at.
- I did think it possible or probable that perfect fertilisation might have been effected through rostellum.
- One has a rostellum without hooks, like the tni of the vegetable-feeders, the other has hooks like those of the carnivora.