Select the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only.)
The process in which water is lost from the margins of strawberry leaves is:
Topic: Guttation
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Pick an option and check your answer. The full worked answer is below either way.
Answer
(d) Guttation.
GUTTATION is the loss of water in LIQUID form, as visible drops, through permanently open pores called HYDATHODES at the tips and MARGINS of leaves. The words "margins of leaves" in the question point straight to it.
It occurs at night or in the early morning, when high humidity prevents transpiration and the stomata are closed, but root pressure keeps pushing water upwards. The water is forced out as drops.
THE CONTRAST to hold on to: TRANSPIRATION gives water VAPOUR through STOMATA; GUTTATION gives water DROPS through HYDATHODES.
The other options are all transport processes rather than losses: osmosis is water moving across a selectively permeable membrane, diffusion is movement down a concentration gradient, and imbibition is the absorption of water by a solid such as a dry seed.
Guttation.