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Positive hydrostatic pressure and negative hydrostatic pressure in fully turgid cell

Positive hydrostatic pressure and negative hydrostatic pressure in fully turgid cell

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago
Hudrostatic pressure is the pressure exerted by liquid at rest.Hydrostatic pressure depends on height of column,density of the liquid & gravity.Hydrostatic pressure increases with depth because of the increasing weight of fluid exerting downward force from above.This change in hydrostatic pressure with depth is known as hydrostatic pressure gradient.The positive hydrostatic pressure gradient can be understood with the help of an example-in plants,the leaves have the large amount of stored food in the form of sugars or we can say the source has high solute concentration.As a result,water moves from neighboring cells(sink)into the source cell(leaves).This creates a pressure gradient & the water moves out of the source along with sugars thereby transporting sugars to the rest of the plants.Similarly,the negative pressure gradient can be understood with the help of an example of plant roots.As we know roots absorb water & minerals from the soil.This means that soil has high solute concentration still the waters enters into the root hairs alongwith minerals.This type of transportation is due to negative hydrostatic pressure gradient.

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