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Transpiration is the loss of water from a plant by evaporation, which then diffuses out of the leaf via the stomata. It is important to note whether the student understands how and why water leave...
Oxygen is absorped into the blood by the process of diffusion. A large surface area, short diffusion pathway (the distance the oxygen has to travel through) and large concentration gradient increases the ...
Extensive root systems allow for maximum uptake of available water from the ground. Low surface area to volume ratio reduces the rate of evapotranspiration, alongside a thick waxy cuticle covering the sur...
ADH (Anti-diuretic hormone). First his blood plasma becomes more concentrated. This is detected by receptors in the hypothalamus which stimulates the pituitary gland to secrete ADH. ADH enters the blood s...
Alveoli are folded to increase their surface area to volume ratio, so more volume of air can diffuse in from the blood and and in from the bronchioles. The lining of the alveoli walls are also moist so th...
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