Appearance
Use device theme  
Dark theme
Light theme

What is a rostellum?

What is a rostellum? Here are some definitions.

Noun
  1. A small beak-like process or extension; a small rostrum.
  2. (botany) A projecting part of the column in the flower of an orchid that separates the male stamen from the female gynoecium.
  3. (biology) A retractable protruding part at the anterior end of a soft-bodied tapeworm; the scolex from which it protrudes is often armed with hooks which serve to keep it in place attached to the host.
Find more words!
Use * for blank tiles (max 2) Advanced Search Advanced Search
Use * for blank spaces Advanced Search
Advanced Word Finder
Examples
One has a rostellum without hooks, like the tni of the vegetable-feeders, the other has hooks like those of the carnivora.
The rostellum is normally present, rarely absent, and is armed with two alternating rows of hooks of characteristic taenioid shape.
Asa Gray's observations on the rostellum of Gymnadenia are very imperfect, yet worth looking at.
The rostellum ends in a holdfast by which the cell is fixed to the gut wall of its host.
So in other cases, but I have not completely traced that going to the rostellum.
The third stigma is sterile and has developed into the rostellum, a sticky structure that aids in pollination by attaching the pollen to insects.

See Also

Nearby Definitions
9-letter Words Starting With
Find Definitions
go
Word Tools Finders & Helpers Apps More Synonyms
Copyright WordHippo © 2024