How is a roundworms digestive system different from that of a flatworm?
Unlike flatworms or cnidarians, roundworms have a tube-like digestive system that has two openings. Food enters through a mouth and wastes exit the other end of the digestive system. This is an efficient system of digestion, and most complex animals have this system of digestion.
What are some major differences between roundworms and flatworms?
What is the difference between flatworms and roundworms?
| Flatworms | Roundworms |
|---|---|
| They do not have a body cavity and thus are acoelomates. | They are pseudocoelomates i.e. they have a body cavity between their mesoderm and endoderm layers. |
What’s the difference between free living flatworms and parasitic flatworms?
The free-living species of flatworms are predators or scavengers. Parasitic forms feed on the tissues of their hosts. Most flatworms, such as the planarian shown in Figure 1, have a gastrovascular cavity rather than a complete digestive system.
Do all wrasse eat flatworms?
Many wrasses eat flatworms and of them, the sixline or pyjama wrasse is one the best. All dragonettes will eat flatworms but the Psychedelic mandarin and Pink scooter blenny are the best. A scooter and a sixline wrasse can both be added at the same time for flatworm plagues.
How do parasitic flatworms attach to their host?
Parasitic flatworms have hooks on their mouths that allow them to securely attach to their hosts. Since the worms are eating the food the host has digested, these flatworms do not have the digestive and nervous system development necessary for them to be free-living .
Do parasitic flatworms have a tough covering?
Endoparasites have a thick protective covering of cells called a that prevents them from being digested by their host. Other flukes are ectoparasites, or parasites that live on the outside of their hosts.