WebThe effectiveness of exchange surfaces in plants and animals is increased by having: A large surface area: the flattened shape of structures such as leaves; the alveoli. in the respiratory system; Webexchange surfaces An adequate ventilating mechanism must be present To ensure that oxygen-laden air is brought in and carbon dioxide-laden air is driven out The gas exchange surface must be protected Because the gas exchange system is thin and delicate Gaseous Exchange in an Earthworm (Solutions for all Life Sciences, Macmillan, p207)

Respiratory system - Basic types of respiratory structures

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 cell in the body is close to the external environment. ... There are various methods of gas exchange used by animals. As seen in mammals, air is taken in from the external ... WebExpert Answer. 100% (1 rating) 1. Mammals and insects both get their oxygen from air, while fish get oxygen from water. Water has a much lower oxyge …. View the full answer. nuffield fitness centre chichester

Exchange surfaces (an overview) - YouTube

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 cell in the body is close to the external … WebFish, insects and mammals have very different gas exchange systems. They each increase the surface area:volume ratio in a different way. Fish have filaments and … Webhuman and the counter current exchange of fish. These energy costs are necessary for efficient gas exchange, and to support the metabolic rate of the animal and ultimately its … ningbo bofan sanitary ware co. ltd