What is never zero in a cell-
1. Solute potential
2. Water potential
3. DPD
4. Diffusion pressure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe amount of pressure needed to stop fluid from moving by osmosis into a solution is referred to as the
1. Osmotic pressure
2. water potential
3. pressure potential
4. solute potential
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the absence of transpiration water moves up xylem because of
1. root pressure
2. turgor pressure
3. evaporation
4. high soil mineral concentration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHigh root pressure can cause water to be lost by leaves through the process of
1. respiration
2. regurgitation
3. transpiration
4. guttation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyRinging experiments prove all but
1. Food is translocated through phoem
2. Water is translocated through xylem
3. Leaves are the sinks of phloem transport
4. The phloem tissue can be regenerated if the cambium is intact.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLoss of solutes from a cell leads to
1. Increase in water potential
2. Decrease in solute potential
3. Increase in pressure potential
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyApparently _______________ is the source of energy for keeping stomata open.
1. photosynthesis
2. transpiration
3. ion transfer
4. sodium pump
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMaintaining turgor pressure in guard cells requires an uptake of
1. K+
2. H+
3. ATP
4. CO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAbout _______________ % of the water taken in by roots is lost by transpiration.
1. 100
2. 98
3. 90
4. 60
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEssential ions except _______________ are
removed from the roots and relocated through the xylem.
1. phosphorus
2. potassium
3. nitrogen
4. calcium
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology