What is "flatworms"

Usage examples of "flatworms".

Animals simpler than the flatworms, such as the coelenterates, sponges, and single-celled creatures, generally have either radial symmetry or no marked symmetry at all.

Having carried out all kinds of experiments, they finally made flatworms from the family with the sonorous name Dugesia Dorotocephala the stars of an experiment that was to lead to fantastic results.

The next more complicated group of animals are the flatworms, which, although still simple, show certain developments that foreshadow the structure of all other, more complicated, animals.

The nerve cord had to specialize, even in the flatworms, and this specialization arose, in all probability because of the shape of the flatwonn.

Even in flatworms there is an enlargement and enrichment of the nerve cord at the head end, therefore.

The originator of this research was the maverick James McConnell, at Ann Arbor, Michigan, who in a series of papers during the 1960s, first in conventional scientific journals and then in his own publication, the exotically named Worm-Runners Digest-, reported experiments in which flatworms, trained by pairing light with electric shock, were chopped up and other, 'naive' (that is, untrained) worms allowed to cannibalize them.

But flatworms don't matter, coincidences don't matter, no mundane proof matters: There is no proof that some cocksure psychiatrist could not explain away as coincidence, or déjà vu, or self-delusion.

But flatworms don’t matter, coincidences don’t matter, no mundane proof matters: There is no proof that some cocksure psychiatrist could not explain away as coincidence, or déjà vu, or self-­delusion.

Maybe there'll be a new partnership out there among the starsthe descendants of free-living flatworms existing side by side in technological symbiosis with the descendants of parasitic roundworms.

As flatworms are very aphotic (averse to light), they curled up every time the lamp was switched on.