Question

In summers, leaves of a potted plant droops when the soil becomes dry. Which cell organelle makes the leaves to droop?

Answer 1

Answer:

When plants don't receive enough water, their leaves begin to droop, or wilt. Often the edges curl and the leaves turn yellow, too. This is a defense mechanism, because shedding leaves helps a plant get rid of some surface area that would lose water to the atmosphere.

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Answer 2

Vacuole is the cell organelle that makes the leaves droop.

• Vacuole is one of the organelles of the cells that are separated by a membrane and this membrane is filled with a liquid type fluid.
• The number of vacuoles in the plant cell is less in number but their size is quite large.
• Vacuoles play an essential role in maintaining the water balance in the plant cells.
• There is no specific size or shape of the vacuole.
• In summers, the plants remain without water for a longer duration due to which soil becomes dry and ultimately the central vacuoles present in the plant cells lose their shape by losing all the water that the entire leaf wilts.

Hence, Vacuoles are responsible for maintaining turgor pressure and water balance but it losses all the water when the planters are not provided with water for longer period.