Bulk flow can be achieved by

(1) Positive hydrostatic pressure

(2) Negative hydrostatic pressure

(3) Both A and B

(4) Concentration gradient

Subtopic:  Pathways of transport |
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If mass flow is occurring like a garden hose,

(1) It is due to positive hydrostatic pressure

(2) It is due to negative hydrostatic pressure

(3) It is due to concentration gradient

(4) All of these

Subtopic:  Phloem Translocation |
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If mass flow is occurring like suction through a straw

(1) It is due to positive hydrostatic pressure

(2) It is due to negative hydrostatic pressure

(3) It is due to concentration gradient

(4) All of these

Subtopic:  Water Potential Concept |
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The apoplast does not hold true which of the following statements?

(1) System of adjacent cell walls that is continuous throughout the plant

(2) Not continuous path at the place of casparian strips of the endodermis in the roots

(3) Occurs through the intercellular spaces and the walls of the cells

(4) Crosses cell membrane

Subtopic:  Water Absorption |
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Apoplast movement

Find the wrong one.

(1) Dependent on gradient

(2) Water movement is through mass flow

(3) The continuous stream of water gets tension when water is absorbed by root hairs

(4) Mass flow of water occurs due to adhesive and cohesive properties of water

Subtopic:  Water Absorption |
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Symplastic system

Find the wrong one.

(1) System of interconnected protoplasts

(2) Involves path through plasmodesmata

(3) Water has to enter the cells through the cell membrane

(4) Above a potential gradient movement

Subtopic:  Water Absorption |
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Symplastic movement is slower than apoplastic movement

(1) Because it involves cytoplasmic streaming always

(2) Molecule has to enter through the cell membrane

(3) Because it is down the gradient

(4) All of these

Subtopic:  Water Absorption |
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Most of the water flow in the roots occur via the………

(1) Apoplast

(2) Symplast

(3) Active transport

(4) Imbibition

Subtopic:  Water Absorption |
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Most of the movement in roots through apoplast is due to

(1) Cortical cells are loosely packed and hence no resistance to water movement

(2) Endodermal cells are loosely packed and hence no resistance to water movement

(3) Pericycle cells are loosely packed and hence no resistance to water movement

(4) Medullary cells are loosely packed and hence no resistance to water movement

Subtopic:  Water Absorption |
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Casparian strip makes

(1) Endodermis impervious

(2) Inner layer of cortex impervious

(3) Outer layer pervious

(4) More than one option is correct

Subtopic:  Water Absorption |
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