During Imbibition which of the following is pre-requisite?

(1) Water potential gradient between the absorbent and the liquid imbibed

(2) Affinity between absorbent / adsorbent

(3) Amount of seeds

(4) Both A and B

Subtopic:  Imbibition |
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From the twig experiment in which twig is placed in colored water, which of the following can be deduced?

(1) The path of organic Acid

(2) The path of hormones

(3) The path of water

(4) The development of twig

Subtopic:  Water Absorption |
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Long distance transport cannot be carried by

(1) Diffusion Alone

(2) Active transport alone

(3) Bulk flow

(4) Both A and B

Subtopic:  Water Absorption |
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Movement of molecule across a typical plant cell i.e. 50 micrometer takes

(1) 10 seconds

(2) 15 seconds

(3) 2.5 seconds

(4) 16 seconds

Subtopic:  Water Absorption |
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Mass flow or bulk flow system is the movement of substances in bulk or in masse from one point to another point as a result of

(1) Pressure Difference between two points

(2) Osmotic gradient between two points

(3) Concentration gradient between two points

(4) Cannot be predicted

Subtopic:  Phloem Translocation |
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Mass flow

(1) Solids move slowly

(2) Liquid move faster

(3) All move through the same pace

(4) Solids move faster due to high Osmotic pressure

Subtopic:  Pathways of transport |
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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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