Mark out the incorrect statements.
i) Bulk flow can be achieved through a positive hydrostatic pressure.
ii) Bulk flow can achieved through a negative hydrostatic pressure.
iii) Plasmolysis usually occurs in nature
iv) Imbibition also involves diffusion of water.

i & iii

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Only iii

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iii & iv

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ii & iv

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Solution

The correct option is B Only iii
Plasmolysis doesn't occur in nature. It is the separation of plant cell cytoplasm from the cell wall due to the loss of water. It is mostly a laboratory-induced process and doesn't occur naturally.
Imbibition is one of the types of diffusion of water in which water is absorbed by colloidal solids.
Bulk flow is achieved through both positive and negative hydrostatic pressure.
So the correct option is C.

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Similar questions

Bulk flow is achieved due to a positive hydrostatic pressure gradient in _____and negative hydrostatic pressure gradient in _____ respectively.

Q. Which of the following statements is/are not correct?
(i) Water and minerals, and food are generally moved by a mass or bulk flow system.
(ii) Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
(iii) The bulk movement of substances through the conducting tissues of plants is called translocation.
(iv) Xylem translocates organic and inorganic solutes, mainly from roots to the aerial parts of the plants.
(v) Phloem translocates water, mineral salts, some organic nitrogen and hormones, from the leaves to other parts of the plants.

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.

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.

Q. What is hydrostatic pressure (positive and negative with every day examples) and its role in bulk transport?

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Mark out the incorrect statements.i) Bulk flow can be achieved through a positive hydrostatic pressure.ii) Bulk flow can achieved through a negative hydrostatic pressure.iii) Plasmolysis usually occurs in natureiv) Imbibition also involves diffusion of water.

Mark out the incorrect statements.
i) Bulk flow can be achieved through a positive hydrostatic pressure.
ii) Bulk flow can achieved through a negative hydrostatic pressure.
iii) Plasmolysis usually occurs in nature
iv) Imbibition also involves diffusion of water.