Turgidity in plants is maintained by:
Correct answer: C. Vacuole
- A. Wall pressure
- B. Internal pressure
- C. Vacuole
- D. Osmotic pressure
Explanation
"The membrane that bounds vacuole, is called tonoplast which contains a number of active transport systems that pump ions into the vacuole or vacuolar compartments despite the higher concentration than that of the extracellular fluid. Because of the higher ionic concentration, water enters the vacuole and hence provides turgidity, mechanical support, to soft tissues of plant." (PTB)
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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