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Apoplast Pathway

Most water fl...

Question

Most water flow in root occurs via apoplast as

A

Cortical cells are living cells

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B

Cortical cells are loosely arranged

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C

Cortical cells are thin walled

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D

All the above

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Solution

The correct option is B Cortical cells are loosely arranged
Most of the water flow in the roots occurs via Apoplast since the cortical cells are loosely packed, and hence offer no resistance to water movement.
So, the answer is, "Cortical cells are loosely arranged".

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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.

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Cell	O.P (MPa)	P.P. (MPa)
a	-0.87	0.44
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Q. Most of the water flow in the root takes place via the apoplast because

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