What type of environment do flatworms live in?
Except for the temnocephalids, flatworms are cosmopolitan in distribution. They occur in both fresh water and salt water and occasionally in moist terrestrial habitats, especially in tropical and subtropical regions.
What physical adaptations were necessary for flatworms to become parasitic?
What physical adaptations (changes) would you predict were necessary for flatworms to become parasitic? A parasitic flatworm has less-evolved digestive system, since they absorb the nutrients directly from the host, having no point to digest further.
How do flatworms survive without a circulatory system?
There is no need for a special circulatory system as a human has because the flatworm doesn’t breathe with lungs and doesn’t need to transport oxygen around its body. The flatworm simply diffuses oxygen via its skin. This occurs wherever it may need the oxygen.
What are the adaptive features present in flatworms to live as Endoparasites?
Parasitic adaptations of Phylum Platyhelminthes. Taenia is an endoparasitic worm residing in the internal organs like intestine of humans. The osmotic pressure inside the worm is higher than that of the surrounding host fluid. This helps to permit ready absorption of the digestive food from the host.
How do flatworms survive?
To adapt to marine life this flatworm uses diffusion to breathe and to distribute nutrients to other parts of the body. Diffusion is where elements move from an area of high concentration to an area of low concentration. A hydrostatic skeleton makes it easy for flatworms to adapt to aquatic life.
Why flatworms are called Acoelomates?
Flatworms are called acoelomate animals. They do not possess a body cavity or coelom Since there is no body cavity in these animals their body is solid without a perivisceral cavity.
Are flatworms Acoelomates?
Flatworms are acoelomate, triploblastic animals. They lack circulatory and respiratory systems, and have a rudimentary excretory system. This digestive system is incomplete in most species.
Do flatworms have a stomach?
Do flatworms have a stomach? -Yes7. Describe digestion in flatworms. -They have incomplete digestive systems and use extracellular and intracellular complementary digestion11.
What are the distinguishing characteristics of flatworms?
Characteristics: Flatworms are unsegmented worms with a tail and a head end. They are bilaterally symmetrical with a definite upper and lower surface. They have no body cavity or and no specialized respiratory or circulatory organs.
What are three characteristics of flatworms?
The main characteristics of flatworms (Figure below) include:
- Flatworms have no true body cavity, but they do have bilateral symmetry.
- Flatworms have an incomplete digestive system.
- Flatworms do not have a respiratory system.
- There are no blood vessels in the flatworms.
What are the two examples of flatworms?
Examples of flatworms: Liver fluke Planaria
- Liver fluke.
- Planaria.