Question

select the incorrect statement w.r.t. apoplast pathway of water movement . 1- it is a faster
2- metabolic state of root does not affect apoplast pathway
3- there is little resistance in the movement of water
4- it consists of living part of plant body
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Answer 1

Explanation:

In apoplastic movement, water moves from cell to cell through the intercellular spaces or walls of the cells and hence on the outer side of the plasma membrane. Majority of the water in roots is carried by the apoplastic pathway, except at the casparian strip. Thus, the correct answer is option B.

Answer 2

The incorrect statement w.r.t. apoplast pathway of water movement is 4- it consists of the living part of the plant body.

• Water can flow from the soil to the roots and to other parts of the plant through two pathways:

1. Apoplastic Pathway:

• When the water flows only through the non-living component of the cell (cell wall) it is called the apoplastic pathway.
• This way is faster as there is very little resistance faced by the flowing water.
• The metabolic state of the root does not affect the apoplastic pathway.

      2. Symplastic Pathway:

• When the water passes through the cytoplasm and plasmodesmata (the living component of the cell) it is called the symplastic pathway.
• The water faces more resistance and thus this pathway is slower.