NEET BIOLOGY

Detailed explanation-1: -noun. a phylum of worms having bilateral symmetry and a soft, usually flattened body, comprising the flatworms.

Detailed explanation-2: -flatworm, also called platyhelminth, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates. A number of flatworm species are free-living, but about 80 percent of all flatworms are parasitic-i.e., living on or in another organism and securing nourishment from it.

Detailed explanation-3: -The name Platyhelminthes (pronounced “plat-ee-hel-MIN-theze”) is derived from the Greek root word platy meaning flat and the Greek root word helminth meaning worm. Flatworms live on land, in fresh water, in the ocean, and in or on other animals as parasites (e.g., tapeworms).

Detailed explanation-4: -The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek , platy, meaning “flat” and (root: -), helminth-, meaning “worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.