Which statement is true about both flatworms and roundworms? Flatworms are pseudocoelomates, meaning they lack an internal body cavity. Which is true of both flatworms and roundworms? They both have radial symmetry. They both have
Which statement is true about both flatworms and roundworms?
Flatworms are pseudocoelomates, meaning they lack an internal body cavity. Which is true of both flatworms and roundworms? They both have radial symmetry. They both have bilateral symmetry.
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. |
Are roundworms that do not have circular muscle quizlet?
Describe the movement of roundworms. Thrashing movement. The do not have circular muscles, they have only muscles that run the length of their body; therefore, they thrash. As one muscle contracts, another relaxes.
How many muscle layers do roundworms have?
How many tissue layers do roundworms have? 11. Triploblastic: three tissue layers. (Ectoderm, mesoderm, and endoderm.)
Which describes the movement of a roundworm?
Describe roundworm movement. – Causes their bodies to move in a thrashing manner as one muscles contract and the other relaxes. – These muscles also pull against the outside body wall and other pseuocoelom. Many humans diseases related to parasitic roundworms can be attributed to three things.
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.
Do roundworms have a complete digestive system?
Unlike the flatworms, the roundworms have a body cavity with internal organs. A roundworm has a complete digestive system, which includes both a mouth and an anus.
What organ systems do roundworms have?
While nematodes have digestive, reproductive, nervous and excretory systems, they do not have discrete circulatory or respiratory systems. Nematodes use chemosensory and mechanosensory neurons embedded in the cuticle to orient and respond to a wide range of environmental stimuli.
Do roundworms have a one way digestive system?
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.
Which is true of both flatworms and roundworms?
Flatworms are pseudocoelomates, meaning they lack an internal body cavity. Flame cells move water and nutrients from the body of a flatworm. Free-living flatworms reproduce asexually by regeneration. Filaria worms are passed to a host by contaminated meat. Which is true of both flatworms and roundworms? A. They are both acoelomates. B.
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.
How are roundworms used to control pests?
Roundworms reproduce sexually. Some roundworms are used to control pests in a garden. Flatworms are pseudocoelomates, meaning they lack an internal body cavity. Flame cells move water and nutrients from the body of a flatworm. Free-living flatworms reproduce asexually by regeneration. Filaria worms are passed to a host by contaminated meat.
Why do flatworms move water out of the body?
Because flame cells move water out of the body, they keep flatworm cells from becoming waterlogged. In addition to the action of flame cells, flatworms also excrete waste prod- ucts and maintain homeostatic water balance through their mouths. as the excretory and nervous systems, are found in flatworms.