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Which is the BEST explanation for how fluid pressure from freshwater helps plants to stand upright?

Freshwater is a hypertonic solution, which causes the plant cells to swell with turgor pressure.

BFreshwater is a hypotonic solution, which causes the plant cells to swell because of plasmolysis.
CFreshwater is a hypertonic solution, which causes the plant cells to swell because of plasmolysis.
DFreshwater is a hypotonic solution, which causes the plant cells to swell because of turgor pressure.

Verified Answer :

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Dfreshwater is a hypotonic solution, which causes the plant cells to swell because of turgor pressure.

Answer:

The correct answer is option D.

Explanation:

Osmosis refers to the procedure by which the molecules of water move from the area where they are highly concentrated to the area where they are present in low concentration via a semipermeable membrane. One use of osmosis is that it provides support to plants.  

A hypotonic solution refers to a kind of solution, which possess more molecules of solvent, in the given case it is water and fewer molecules of solute. The freshwater is hypotonic to plant cells, therefore, the cells of the plant captivate water osmotically, and its size increases and become turgid. This produces an external opposite pressure, which is equivalent to the wall pressure that maintains the plant's upright position.  

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