Gas Exchange- AS revision Gas exchange in insects, single celled organisms, plants and fish 3.5 / 5 based on 7 ratings ? BiologyBiological molecules, organic chemistry and biochemistryASAll boards Created by: SazzCreated on: 31-05-09 20:07 The holes in the side of insects that allow the entrance of gases are called... Spiracles 1 of 8 Ventilation is... The movement of gases due to muscle movements 2 of 8 When a plants guard cells are turgid the stomata are... Open 3 of 8 The spongy mesophyll contains airspaces. This has what function? To increase surface area available for gas exchange 4 of 8 Fish have what sort of blood system? Closed, single 5 of 8 Using Ficks law, which condition would result in fastest gas exchange? Large surface area, large conc. difference, small diffusion distance 6 of 8 In insects, gases travel down ________ to reach body tissues Trachioles 7 of 8 Counter-current flow is more efficient because it... Maintains conc. gradient along the capillary 8 of 8
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