Account for the following Wilted lettuce leaves become crisp/firm when placed in cold water for a while.

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Solution

Hypertonic cell sap is found in wilted lettuce leaves.
Endosmosis happens when the lettuce leaves are submerged in cold water; water penetrates the cells of the lettuce leaves, and the plasmolyzed cells become turgid.
Therefore, when wilted lettuce leaves are submerged in cold water for a short time, they become crisp and firm.

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Similar questions

Give reasons for the following:

(a) If you sprinkle some common salt on grass growing on a lawn,it is killed at that spot.

(b) If you uproot a plant from the soil,its leaves soon wilt.

(d) A plant cell when kept in a hypertonic salt solution for about 30 minutes turns flaccid.

(e) Potato cubes when placed in water become firm and increase in size.

(a)What is wilting ?

(b) Some plants show wilting of their leaves at noon even when the soil is well watered. Why is it so ?

Account for the following:

Wilted lettuce leaves become crisp/firm when placed in cold water for a while.

give reason :

i)some ladies develop moustache,beard and mascularin voice?/

ii)leaves of wilted lettuce ,if kept in cold water ,become crisp?

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