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Biology
Ascent of sap
Explain Dixon-Jolly of the ascent of sap with a diagram.
Biology
Ascent of sap
The cut end of a shoot is dipped in eosin solution. What will happen?
a) Ascent of sap does not occur.
b) Ascent of sap does not occur but the leaves remain fresh.
c) Leaves wilt but the ascent of sap continues.
d) Ascent of sap occurs and the tracheary elements get stained.
Biology
Ascent of sap
It is ……………... that causes sap to rise through a plant stem to the leaves.
Biology
Ascent of sap
What is the ascent of sap? Explain the Transpiration pull and cohesion theory?
Biology
Ascent of sap
Explain the cohesion tension theory.
Biology
Ascent of sap
Who discovered the root pressure?
A. Stephen hales
B. Priestley
C. Dixon
D. Renner
Biology
Ascent of sap
What are the functions of p-protein and callose protein in the conduction of food from the phloem?
Biology
Ascent of sap
Root pressure is maximum,when
A. Transpiration is high and absorption is very low
B. Transpiration is very low and absorption is high
C. Absorption is very high and transpiration is also very high
D. Absorption is very low and transpiration is also very low
Biology
Ascent of sap
The chief role of transpiration in plants is to cause
A. Loss of surplus water
B. Cooling of the plant
C. The rapid ascent of sap
D. The rapid rise of minerals
Biology
Ascent of sap
Design an experiment to demonstrate hydrotropism.
Biology
Ascent of sap
Which fraction of soil water is available to plants for absorption by roots?
Biology
Ascent of sap
When the stem of a herbaceous plant of cut, water or sap oozes out, this is due to?
A. Guttation
B. Transpiration pull
C. Root pressure
D. Imbibition
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