which statement is true about both flatworms and roundworms

1. What do flatworms and roundworms have in common?
2. How are flatworms and roundworms similar to segmented worms?
3. What type of symmetry do flatworms and roundworms have?
4. Which of these features distinguishes roundworms from flatworms?
5. Where can roundworms be found?
6. What diseases do flatworms cause?
7. Is an earthworm a roundworm?
8. Do roundworms have a nervous system?
9. What characteristics do flatworms have?
10. What type of symmetry do roundworms have?
11. Do flatworms have a Coelom?
12. Do flatworms have a stomach?

What do flatworms and roundworms have in common?

Most flatworms are parasites that obtain their food from a host animal. ... Some are carnivores, some are herbivores, and some are parasites. 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.

How are flatworms and roundworms similar to segmented worms?

Flatworms (phylum Platyhelminthes) are simple animals that are slightly more complex than a cnidarian. Roundworms (phylum Nematoda) have a slightly more complex body plan. Segmented worms (phylum Annelida) are the most complex animals with worm-like body plans.

What type of symmetry do flatworms and roundworms have?

It was also needed for bilateral symmetry. Flatworms have bilateral symmetry.

Which of these features distinguishes roundworms from flatworms?

The two most prominent features that distinguish roundworms from flatworms are the presence of a pseudocoelom, or partially developed body cavity, and a complete digestive tract with two openings, a mouth and an anus.

Where can roundworms be found?

Roundworms can live in or on humans, and can cause many problems. They are usually found in soil and stool and can enter the body through the mouth or direct contact with the skin. They can live in the human intestine for a very long time.

What diseases do flatworms cause?

Paragonimiasis is caused by infection with a flatworm. That's a parasitic worm also called a fluke or lung fluke because it commonly infects the lungs. Usually, infection comes after eating undercooked crab or crayfish that carry immature flukes. Once swallowed by a person, the worms mature and grow inside the body.

Is an earthworm a roundworm?

Invertebrate animals commonly called "worms" include annelids (earthworms and marine polychaete or bristle worms), nematodes (roundworms), platyhelminthes (flatworms), marine nemertean worms ("bootlace worms"), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.

Do roundworms have a nervous system?

Roundworms have a body cavity with internal organs and a simple nervous system. Roundworms can be free-living or parasitic.

What characteristics do flatworms have?

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 type of symmetry do roundworms have?

Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle.

Do flatworms have a Coelom?

The features that distinguish flatworms from worms in other phyla include their flat body, their primitive digestive cavity with only one opening, and their lack of a body cavity, or coelom.

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.