Assertion : Mass or bulk flow is the movement of substance en masse from one point to another, as a result of pressure difference between the two points.

Reason: It can be achieved only through positive hydrostatic pressure.

if both A and R are true and R is the correct explanation of A

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if both A and R are truJe but R is not the correct explanation of A

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if A is true but R is false

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if both A and R are false.

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Solution

The correct option is C
if A is true but R is false

Mass flow is due to the hypertonic state in the cells with reference to the adjacent cells and this results in increased potential.

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Q. Assertion :Mass or bulk flow is the movement of substances in bulk from source to sink as a result of pressure differences. Reason: Water, minerals and food are generally moved by mass flow.

Q. Which of the following is true/false regarding transport of substances in plants?
(i) Mass flow is the movement of substance in bulk as a result of pressure difference.
(ii) Bulk flow is achieved only through a positive hydrostatic pressure gradient.
(iii) The apoplast system is the system of interconnected protoplasts.
(iv) Most of the water flow in the roots occurs via the apoplast since the cortical cells are loosely packed, and offer no resistance to water movement.

Which of the following statements are wrong?
(i) Mass flow of substances inside the plant is the result of pressure differences between the two points.
(ii) Diffusion cannot account for long distance movement of water and solutes in plants.
(iii) Movement through apoplast does not involve crossing the cell membrane.

Which of the following statements are wrong?
(i) The mass flow of substances inside the plant is the result of pressure differences between the two points
(ii) Diffusion cannot account for long distance movement of water and solutes in plants
(iii) Movement through apoplast does not involve crossing the cell membrane
(iv) The movement of water through endodermis is only through symplast

Q. Which of the following statements are wrong?
(i) Mass flow of substances inside the plant is the result of pressure differences between the two points
(ii) Diffusion cannot account for long distance movement of water and solutes in plants
(iii) Movement through apoplast does not involve crossing the cell membrane
(iv) The movement of water through endodermis is only through symplast

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Assertion : Mass or bulk flow is the movement of substance en masse from one point to another, as a result of pressure difference between the two points. Reason: It can be achieved only through positive hydrostatic pressure.

The correct option is C if A is true but R is false Mass flow is due to the hypertonic state in the cells with reference to the adjacent cells and this results in increased potential.

Assertion : Mass or bulk flow is the movement of substance en masse from one point to another, as a result of pressure difference between the two points.

Reason: It can be achieved only through positive hydrostatic pressure.

The correct option is C
if A is true but R is false

Mass flow is due to the hypertonic state in the cells with reference to the adjacent cells and this results in increased potential.