AIIMS 2011
- Exam
- AIIMS
- Year
- 2011
- Subject
- Botany
- Chapter
- Transport in Plants
AIIMS 2011 · Botany · Transport in Plants
Assertion : Water that enters into a plant cell through diffusion...
Assertion : Water that enters into a plant cell through diffusion makes it turgid.
Reason : Entry of water into the cell through diffusion develops wall pressure inside the cell.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
C. If assertion is true but reason is false
Step-by-step solution
Cell's turgidity is due to turgor pressure. Turgor pressure is the pressure which develops in the confined part of an osmotic system due to osmotic entry of water into it. It is also called hydrostatic pressure or pressure potential. The force exerted by the cell wall over the protoplast is called wall pressure. Normally wall pressure is equal and opposite to turgor pressure except when the cell becomes flaccid.