Calculate the oxygen consumption per hour for this rat using the following equation:

ml o2 consumed/1 minute x 60 minutes/hour = ml o2/hour

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.