The Mass Flow Hypothesis primarily explains the transport of which substance in plants?
Water
Minerals
Sucrose
Auxins
Related Questions
Which experimental evidence supports the mass flow hypothesis?
Radioactive tracers show bidirectional movement in phloem
Blocking phloem transport near the sink does not affect source activity
Aphid stylets exude sap with higher pressure at the source than at the sink
Cutting the phloem stops transpiration
Ascent of sap in plants was demonstrated by
Girdling experiment
Ganong’s experiment
Went experiment
Lever auxanometer
Unloading of minerals in leaves is?
Apoplast and Symplast
Only Apoplast
Only Symplast
Vacuoles and Plastids
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
Mass flow hypothesis was proposed by?
Munch
Dixon
Nitch
Levitt
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
Choose the correct statements regarding the uptake of mineral nutrients and food in plants
Even a little amount of exchange of material does takes place between xylem and phloem
Most of the minerals enter the root through active absorption
Due to variable relationship between source and sink direction of sap flow in phloem is
bidirectional
All of the above
Sugar stored in roots may be mobilised to become a source of food in the
Winters
Early spring
Summers
Early summers
Translocation of sucrose takes place through?
Phloem
Xylem
Cambium
Wood Parenchyma
