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NEET Questions / Botany / Transport in Plants / Mass Flow Hypothesis
Which of the following mechanism can explain the transport of sucrose from source to sink?
Osmotic movement of water into sugar loaded sieve tube cells which create a higher hydrostatic pressure into the source than in the sink
Tension created by differences in pressure potential between source and sink
Active absorption of sucrose through sieve tube membrane driven by a specific pump
Transpiration and active transport of sugar from source to sink
Which of the following mechanism can explain the transport of sucrose from source to sink?
Osmotic movement of water into sugar loaded sieve tube cells which create a higher hydrostatic pressure into the source than in the sink
Tension created by differences in pressure potential between source and sink
Active absorption of sucrose through sieve tube membrane driven by a specific pump
Transpiration and active transport of sugar from source to sink
Sugar stored in roots may be mobilised to become a source of food in the
Winters
Early spring
Summers
Early summers
Sugar stored in roots may be mobilised to become a source of food in the
Winters
Early spring
Summers
Early summers
How translocation of organic material is explained in plants?
By transpiration pull/cohesion adhesion theory
Imbibition theory
Mass flow hypothesis
Root pressure theory
How translocation of organic material is explained in plants?
By transpiration pull/cohesion adhesion theory
Imbibition theory
Mass flow hypothesis
Root pressure theory
During flowering, fruit ripening and development period in plants, which part of the plant act as source?
Whole plant
Stem and leaves and the plant
Photosynthesising leaves and older leaves
Growing parts of the plants
During flowering, fruit ripening and development period in plants, which part of the plant act as source?
Whole plant
Stem and leaves and the plant
Photosynthesising leaves and older leaves
Growing parts of the plants
Munch hypothesis is based on
Translocation of food due to TP gradient and imbibition force
Translocation of food due to turgor pressure (TP) gradient
Translocation of food due to imbibition force
None of the above
Arrange the following events of mass flow of organic material in sequence
I. Sugars are transported from cell to cell in the leaf
II. Food is synthesised in form of glucose by leaf cells
III. Movement of water takes place into sieve tube elements
IV. Downward movement of sugar occurs in the stem
V. Solutes are actively transported into the sieve elements
I, II, III, V, IV
II, I, V, III, IV
II, III, I, V, IV
I, II, V, IV, III
