planarian
胎生动物,胎生植物,胎生植物人,胎生生物
Definitions
- 1
Zoology.
- : any of various free-swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts.
Examples
Wang uses statistical physics to figure out how planarians regenerate entire organs cell by cell.
Chromatic jamming appears to be key to how the planarian brain comes together, guiding single cells into neighborhoods that are a driving force in organ development, he says.
Slice a planarian into pieces and, within a week or two, each chunk will grow into a new flatworm — head and all.
Flat against the stone and not easily perceived may be a chiton, a planarian worm, or a nudibranch.
It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze.
Among the lowest forms of worms are the Planarian worms, already alluded to as examples of the third grade of animal existence.
These are planarian worms, and though not of prepossessing appearance generally, are extremely interesting animals to study.
The planarian worms that I have just been telling about are monsters.