Biology 5090 · O Level · Transpiration and translocation

Transpiration and translocation — practice question

Table 4.1 compares the loss of water vapour from two similarly sized potted plants, F and G, which were grown in the same environment over 14 hours.
(a)[1]

State the time of day when the total loss of water vapour from the two plants is maximum.

(b(i))[3]

Suggest reasons for the difference in the total amount of water vapour lost by plants F and G over the 14-hour period.

(b(ii))[3]

Suggest reasons for the rise in the rate of water vapour loss by plant F from 06.00 hours to 12.00 hours.

(c)[2]

The leaves of plant G are at their lowest temperature at 12.00 hours. Suggest reasons for this.

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