PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
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Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
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Assertion is true but Reason is false.
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Both Assertion and Reason are false
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Detailed explanation-1: -Osmotic pressure is numerically equivalent to osmotic potential but the osmotic potential has a negative value, while osmotic pressure has a positive value. So, the correct answer is ‘Assertion is correct but Reason is incorrect’.
Detailed explanation-2: -Assertion :Osmotic pressure is numerically equivalent to the osmotic potential. Reason: Osmotic pressure is the negative pressure applied, while osmotic potential is positive.
Detailed explanation-3: -Osmotic potential is the free energy of the water in a system due to the presence of solute particles. This value of osmotic potential is always negative because the presence of solute will always make a solution have less water than the same volume of pure water (means no solute particles are present).
Detailed explanation-4: -Osmotic pressure is the negative pressure applied on hypertonic solution to stop osmosis . Osmosis potential is positive. More is the solute concentration of solution, more will be the pressure required to prevent water from diffusing in.
Detailed explanation-5: -When solutes are dissolved in water, then water potential decreases. But for a cell the formula to calculate water potential is that water potential is algebraic sum of osmotic potential (which may be zero or negative) and pressure potential which is always positive.