Table of Contents
- 1 How are flatworms and roundworms different from one another?
- 2 What are the main differences among the three main phyla of worms?
- 3 Do flatworms have segments?
- 4 Which characteristics makes rotifers different from roundworms?
- 5 Which of these worms are segmented?
- 6 What are two features of roundworms and rotifers that flatworms do not have?
- 7 How are flatworms different from roundworms and tapeworms?
- 8 What kind of animal is a flatworm?
How are flatworms and roundworms different from one another?
Note: Both flatworms and roundworms can be parasitic or free living….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 are the main differences among the three main phyla of worms?
The sense organs are sensitive to light, touch and vibrations. What are the main differences among the three main phyla of worms? Flatworms belong to the phylum Platyhelminthes, roundworms belong to the phylum Nematoda; segmented worms belong to the phylum Annelida.
Which statement is true about both flatworms and roundworms?
Which is true of both flatworms and roundworms? They both have radial symmetry.
What do flatworms and roundworms have in common?
Both flatworms and roundworms are heterotrophs. Both flatworms and roundworms show bilateral symmetry. Both flatworms and roundworms show organ level organization. Both flatworms and roundworms are triploblastic animals.
Do flatworms have segments?
Taxonomic level: phylum Platyhelminthes; grade of construction: organs derived from three tissue layers; symmetry: bilateral; type of gut: blind; type of body cavity other than gut: none; segmentation: absent; circulatory system: none; nervous system: small bundles of nerves (ganglia), two ventral nerve cords; …
Which characteristics makes rotifers different from roundworms?
Rotifer features and movement Rotifers are similar to round worms because they have bilateral symmetry and are pseudocoelomates with a gut open at both ends. Unlike round- worms, rotifers move through the water by means of their cili- ated wheel-like structures, which are shown in Figure 25.12.
Which of the following structures does a flatworm lack *?
Structure and Function of Flatworms They have a flat body because they do not have a coelom or even a pseudocoelom. They also lack a respiratory system. Instead, their cells exchange gases by diffusion directly with the environment. They have an incomplete digestive system.
What do roundworms and flatworms have in common?
Both flatworms and roundworms show bilateral symmetry. Both flatworms and roundworms show organ level organization. Both flatworms and roundworms are triploblastic animals. Both flatworms and roundworms are protostomes.
Which of these worms are segmented?
phylum Annelida
Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms are known as the segmented worms because their bodies are segmented, or separated into repeating units. Besides the earthworm, the segmented worms also include leeches and some marine worms.
What are two features of roundworms and rotifers that flatworms do not have?
Features of roundworms and rotifers that flatworms do not have include:
- Pseudocoelom \textbf{Pseudocoelom} Pseudocoelom.
- Digestive system with two opening \textbf{Digestive system with two opening} Digestive system with two opening.
- Separate sex \textbf{Separate sex} Separate sex.
Are roundworms segmented?
Roundworms, which have a body cavity but no segments. Segmented worms, which have both a body cavity and segmented bodies.
How are round worms different from segmented worms?
Roundworms are part of the phylum Nematoda. They are bilaterally symmetrical invertebrates.They have a psuedocoelom. Ascaris lumbricodes is the most common human parasite. Segmented worms are the most complex animals of these three invertebrates. They are placed in Annelida.
How are flatworms different from roundworms and tapeworms?
Flatworms belong to phylum Platyhelminthes. They do not have a coelom, respiratory system or a circulatory system.Tapeworms flukes are examples of flatworms. Roundworms are part of the phylum Nematoda.
What kind of animal is a flatworm?
Some flatworms and roundworms are free-living, and some are parasitic. Both flatworms and roundworms are unsegmented worms. Both flatworms and roundworms are multicellular, mobile, invertebrate animals. Both flatworms and roundworms are heterotrophs.
What kind of animal is a roundworm?
Both flatworms and roundworms belong to the kingdom Animalia. Some flatworms and roundworms are free-living, and some are parasitic. Both flatworms and roundworms are unsegmented worms. Both flatworms and roundworms are multicellular, mobile, invertebrate animals. Both flatworms and roundworms are heterotrophs.