HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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transport of materials from low hydrostatic pressure to high hydrostatic pressure
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transport of materials from high water potential to low water potential
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transport of materials down pressure gradient
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transport of materials against pressure gradient
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Detailed explanation-1: -Mass flow, also known as mass transfer and bulk flow, is the movement of fluids down a pressure or temperature gradient, particularly in the life sciences. As such, mass flow is a subject of study in both fluid dynamics and biology.
Detailed explanation-2: -Answer: The mass flow hypothesis states that a never-ending flow of water and nutrients between both the source (where sugars are created) and the sink causes the translocation of glucose and other sugars inside the phloem (where sugars are utilized).
Detailed explanation-3: -Water, minerals and food are generally moved by mass flow.
Detailed explanation-4: -According to his theory, the mass flow in the phloem is driven by an osmotically generated pressure gradient. As the sieve pores interconnect the protoplasts of the sieve tubes, the transport in the sieve tube itself is a mass flow driven by a pressure (or turgor) gradient.