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Q. No.Given below are two statements
Statement I: The greater is the concentration of water in a system, lower is its kinetic energy or water potential
Statement II: Pure water will have the lowest water potential
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic: Water Potential Concept |
69%
From NCERT
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Given below are two statements:
Statement I: Exudation of water droplets on the tips and edges of plant leaves is called guttation. It is caused by root pressure that forces more water to enter leaves than is transpired
Statement II: Transpiration is a 'pulling' process, hence exploration of the rise of xylem sap by cohesion-tension mechanism begins not with roots but with leaves, where the driving force for transpirational pull begins
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Statement I: Exudation of water droplets on the tips and edges of plant leaves is called guttation. It is caused by root pressure that forces more water to enter leaves than is transpired
Statement II: Transpiration is a 'pulling' process, hence exploration of the rise of xylem sap by cohesion-tension mechanism begins not with roots but with leaves, where the driving force for transpirational pull begins
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic: Transpiration & Guttation |
73%
From NCERT
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Select the order of the flow of water in the roots.
A. Cortex
B. Pericycle
C. Xylem
D. Epidermis
E. Endodermis
Chose the correct answer from the options given below
1. D → E → A → B → C
2. D → A → B → E → C
3. A → B → D → C → E
4. D → A → E → B → C
A. Cortex
B. Pericycle
C. Xylem
D. Epidermis
E. Endodermis
Chose the correct answer from the options given below
1. D → E → A → B → C
2. D → A → B → E → C
3. A → B → D → C → E
4. D → A → E → B → C
Subtopic: Pathways of transport |
70%
From NCERT
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Given below are two statements
Statement I: In the process of water movement in plants "roots pressure" is responsible for pushing up water to small height in the stem.
Statement II: "Root pressure" is responsible for upward flow of water through the xylem.
In light of the above statements, choose the most appropriate answer from the options given below
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is ture
Statement I: In the process of water movement in plants "roots pressure" is responsible for pushing up water to small height in the stem.
Statement II: "Root pressure" is responsible for upward flow of water through the xylem.
In light of the above statements, choose the most appropriate answer from the options given below
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is ture
Subtopic: Ascent of Sap | Transpiration & Guttation |
71%
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If you place a plant cell/tissue in a solution and plant cell shrinks from its cell wall, then what is indicated?
1. Solution is hypotonic
2. Solution is Isotonic
3. Solution is hypertonic
4. None of the above
1. Solution is hypotonic
2. Solution is Isotonic
3. Solution is hypertonic
4. None of the above
Subtopic: Plasmolysis |
84%
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The occurrence of which of the following events lead to the opening of stomata?
A. Lowering of osmotic potential of guard cells
B. Guard cells becoming flaccid
C. Decline in guard cell solutes
D. Rise in potassium levels in guard cells
E. Movement of water from neighboring cells into guard cells
Choose the correct answer from the options given below:
1. A, B and D only
2. B, C and D only
3. B, C and E only
4. A, D and E only
A. Lowering of osmotic potential of guard cells
B. Guard cells becoming flaccid
C. Decline in guard cell solutes
D. Rise in potassium levels in guard cells
E. Movement of water from neighboring cells into guard cells
Choose the correct answer from the options given below:
1. A, B and D only
2. B, C and D only
3. B, C and E only
4. A, D and E only
Subtopic: Stomata |
60%
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Hints
In an experiment, you measure the concentration of a polar molecule inside and outside the cell and find that the concentration of this molecule is gradually increasing inside the cell. You also measure the concentration of ATP inside the cell and find that it is dropping. Which of the following processes are you likely to be observing?
1. Active transport
2. Facilitated diffusion
3. Osmosis
4. Passive transport
1. Active transport
2. Facilitated diffusion
3. Osmosis
4. Passive transport
Subtopic: Means of Transport: Active |
80%
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The bark of a girdled tree (upto phloem) may become swollen after a few weeks because
1. Water will not move upwards
2. Water will not move downwards
3. Sugars and other organic materials will not move downwards
4. Sugars and other organic materials will not move upwards
1. Water will not move upwards
2. Water will not move downwards
3. Sugars and other organic materials will not move downwards
4. Sugars and other organic materials will not move upwards
Subtopic: Phloem Translocation |
From NCERT
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Select all routes possible for the transport of water and minerals from root hair to the xylem:
A. Transmembrane route
B. Symplastic route
C. Apoplastic route
D. Stomatal route
E. Endodermis route
Choose the correct answer from the options given below:
1. A, B, C and E only
2. B, C, D and E only
3. A, B, C and D only
4. A, B, D and E only
A. Transmembrane route
B. Symplastic route
C. Apoplastic route
D. Stomatal route
E. Endodermis route
Choose the correct answer from the options given below:
1. A, B, C and E only
2. B, C, D and E only
3. A, B, C and D only
4. A, B, D and E only
Subtopic: Water Absorption | Pathways of transport |
71%
From NCERT
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Hints
Please attempt this question first.
Consider the given two statements:
I. Over small distances, in plants, substances move by diffusion and by cytoplasmic streaming supplemented by active transport.
II. Transport over long distances, in plants, proceeds through the vascular system and is called as transpiration.
1. Only I is correct
2. Only I is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
I. Over small distances, in plants, substances move by diffusion and by cytoplasmic streaming supplemented by active transport.
II. Transport over long distances, in plants, proceeds through the vascular system and is called as transpiration.
1. Only I is correct
2. Only I is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Water Absorption | Transpiration & Guttation | Pathways of transport | Introduction to Water Absorption |
55%
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