Question

On a sunny day at an open market a vendor, Ms. Milly, occasionally sprinkles water on her wilting lettuce. During the day Ms. Milly’s lettuce are firm and ready for sale. Explain the process that resulted in Ms. Milly’s wilting lettuce becoming firm.

Answer 1

The process that results in Ms. Milly’s wilting lettuce becoming firm is osmosis. The explanation is below.

OSMOSIS:

• Osmosis is the process by which water molecules move from a region of high concentration to a region of low concentration via a semipermeable membrane.

• According to this question, Ms. Milly, occasionally sprinkles water on her wilting lettuce and notices that they became firm.

• The firmness of the lettuce is as a result of the movement of water into the leaf cells due to a process called osmosis.

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Answer 2

This has to do with osmosis ( movement of water). The water is a hypotonic solution compared to the lettuce which cells are hypertonic. This causes the water to move in the lettuces cells causing the lettuce to have more structure because there is more turgid pressure.