WebFlatworms range in length from about 1 millimeter (0.04 inches) to more than 20 meters (66 feet). 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 … Web(ii) The body of a flatworm is adapted for efficient gas exchange between the water and the cells inside the body. Using the diagram, explain how two features of the flatworm’s body allow efficient gas exchange. (2) (i) Diffusion; Ignore references to structures, membrane components etc Allow simple diffusion Reject facilitated

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WebThe body of a flatworm is adapted for efficient gas exchange between the water and the cells inside the body. Using the diagram, explain how two features of the flatworm's … WebThe tracheoles are the site of gas exchange. Ventilation mechanism in insects Very active, flying insects need a more rapid supply/intake of oxygen. They create a mass flow of air into the tracheal system by: Closing the spiracles Using abdominal muscles to create a pumping movement for ventilation black panther take care of their young

Flatworms What are, characteristics, types, digestive …

WebHow is a flatworm adapted for gas exchange? Flattened body - reduce diffusion distance between surface and inside cells + increase surface area How is a earthworm adapted … WebGas exchange by direct diffusion across surface membranes is efficient for organisms less than 1 mm in diameter. In simple organisms, such as cnidarians and flatworms, every … WebThe alveoli wall is 1 cell this so there is a short diffusion distance between the air and blood, this allows rapid exchange of CO2 and O2 gases. A steep concentration gradient also helps diffusion from a high to a low concentration, … black panther tail