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Q. No.| Statement I: | The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. |
| Statement II: | Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling. |
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Active Transport | 2. | Osmosis |
| 3. | Facilitated Diffusion | 4. | Passive Transport |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| List I | List II | ||
| A. | Cohesion | I. | More attraction in liquid phase |
| B. | Adhesion | II. | Mutual attraction among water molecules |
| C. | Surface tension | III. | Water loss in liquid phase |
| D. | Guttation | IV. | Attraction towards polar surfaces |
| Options: | A | B | C | D |
| 1. | II | I | IV | III |
| 2. | II | IV | I | III |
| 3. | IV | III | II | I |
| 4. | III | I | IV | II |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| A: | Mass flow is faster than diffusion. |
| B: | Mass flow is the result of pressure difference between the end points. |
| C: | Different substances involved in mass flow move at different paces. |
| D: | Mass flow can result through either a positive or a negative hydrostatic pressure gradient. |
| 1. | (A), (C), (D) only | 2. | (B), (C), (D) only |
| 3. | (A), (B), (C) only | 4. | (A), (B), (D) only |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | in same direction with the help of different carriers located at a common site |
| 2. | in same direction with the help of different carriers located at different sites in the same cell |
| 3. | in same direction with the help of same carrier |
| 4. | in opposite direction with the help of same carrier |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| I: | The process of translocation through phloem is unidirectional but through xylem, it is bidirectional |
| II: | The most readily mobilized elements are phosphorus, sulphur, nitrogen and potassium. |
1. Statement I is correct but Statement II is correct
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not observed during apoplastic pathway?
| 1. | Apoplast is continuous and does not provide any barrier to water movement. |
| 2. | Movement of water occurs through intercellular spaces and wall of the cells. |
| 3. | The movement does not involve crossing of cell membrane |
| 4. | The movement is aided by cytoplasmic streaming |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAddition of more solutes in a given solution will:
1. not affect the water potential at all
2. raise its water potential
3. lower its water potential
4. make its water potential zero
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements above facilitated diffusion is incorrect?
| 1. | Special proteins of the membrane help in this process |
| 2. | Porins are involved in this process |
| 3. | Movement of the molecule occurs against the concentration gradient |
| 4. | ATP is not required for this process |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPhloem sap in the plants mainly consists of :
1. fructose and water
2. fructose and sucrose
3. glucose and water
4. sucrose and water
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