Biology 0610 · IGCSE · Transpiration

Transpiration — practice question

All living organisms require water, and most plants take it up from the soil.
(a(i))[2]

State the route water follows as it enters and moves through a plant.

(a(ii))[3]

A portion of the water entering the plant is used in transpiration. Define the term transpiration.

(a(iii))[2]

State two ways in which a plant uses water apart from transpiration.

(b)[1]

Suggest a reason for putting the pot of damp soil inside a sealed plastic bag.

(c(i))[3]

Use the information in Fig. 3.2 to state: the highest water-loss rate from 100 g of leaves; the time when the temperature was greatest; and the highest temperature recorded during the investigation.

(c(ii))[3]

Describe how temperature and the rate of water loss from leaves are related in Fig. 3.2.

Worked solution & mark scheme

This 14-mark question has a full step-by-step worked solution and mark scheme. One marking point: the route is root hair cells → root cortex cells

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