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.

(i)

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(ii)

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(iii)

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All the statements are correct.

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Solution

The correct option is D
All the statements are correct.

Mass flow of substances inside the plant is due to either a positive or a negative pressure gradient. Transport of substances can occur because of diffusion only through short distances. In the apoplast pathway, water moves outside the cell membrane. Hence, all the given statements are correct.

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Similar questions

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

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. Identify the correct statement related to water movement in deeper layers of the root.
A. Apoplastic movement of water does not involve the crossing of the cell membrane.
B. Symplastic movement is aided by cytoplasmic streaming.
C. Most of the water movement in the root is through symplast.
D. Water movement through the root layers is ultimately symplastic in the endodermis.

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.

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