The body plan of the flatworm is bilateral, with a head that leads—a plan that continues in most animals living today.
The body plan of the flatworm is bilateral, with a head that leads—a plan that continues in most animals living today.
Flatworms have some organ systems like reproductive organs. Gases enter the body surface and then travel from one cell to another by diffusion. The purpose of circulation is to deliver oxygen and remove waste from cells throughout the body -- specifically the cells furthest from the surface. and lack an anus; the same pharyngeal opening both takes in food and expels waste. No body cavity (acoelomate condition) other than digestive (gut) and usually branched if … Body Plan. Flatworms have no body cavity other than the gut (and the smallest free-living forms may even lack that!)
MS-LS1.D. The shape of a flatworm allows the species to survive without a circulation system. Because of the lack of any other body cavity, in larger flatworms the gut is often very The head has eyes—the first in the animal world.
The structure of this bilateral plan is ideal for an active hunter. Flatworms have: - Radial symmetry - A eucoelomate body plan - A tube-within-a-tube body plan - None of the choices is correct. Platyhelminthes are a diverse group of flatten worms with a fairly simple body plan. Flatworms are beings that have no heart, veins, arteries, capillaries, hemolymph or any type of circulatory fluid.
The body plan of the flatworm is bilateral, with a head that leads—a plan that continues in most animals living today. 18,500 species.
Flatworms are the first animals to transmit signals from sensory receptors along nerve cells to the brain. Body Plan, structure and Symmetry Flatworms have bilateral symmetry. The structure of this bilateral plan is ideal for an active hunter. They are soft, juicy and weak bodied.
Characterized by flat bodies, they have no circulatory or respiratory organs and a very simple digestive tract.
Flatworms are the first animals to transmit signals from sensory receptors along nerve cells to the brain. The circulation they possess occurs between cells or intercellularly and is responsible for transporting substances by diffusion from cell to cell. The structure of this bilateral plan is ideal for an active hunter. This body plan limits them to very small, flat shapes to allow them to absorb oxygen and moisture. Flatworms, also called planarians, belong to the phylum Platyhelminthes. Dorso-ventrallyflattened,distinct posterior and head (bilateral symmetry), and soft-bodied (no skeleton).
They have a nervous system, but … flatworms.