The loss of water through cuticle may reach upto :
1. 5%
2. 10%
3. 20%
4. 40%
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDry wooden stakes, if driven into a small crack in a rock and then soaked, can develop enough pressure to split the rock. Such a pressure is built up through the phenomenon of :
1. Imbibition
2. Buttress roots
3. Prop roots
4. Turgor pressure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe cohesive force existing between molecules of water is contributing to :
1. ascent of sap
2. translocation
3. plasmolysis
4. osmosis.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTo initiate cell plasmolysis, the salt concentration must be :
1. isotonic
2. hypertonic
3. hypotonic
4. atonic
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAscent of sap is mainly attributed to :
1. cohesion force
2. imbibition
3. root pressure
4. capillarity
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySolution concentration is higher in the external solution. The solution is
1. Isotonic
2. Hypotonic
3. Hypertonic
4. None of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements are true/false?
a. the positive hydrostatic pressure is called turgor pressure.
b. wall pressure exerts to prevent the increase of protoplasm size.
c. diffusion is more rapid in liquids than in gases
d. diffusion of water through a semi-permeable membrane is called imbibition
e. osmosis is movement of substances which takes place along a diffusion gradient.
1. a and b are true & c, d and e are false
2. a and c are true & d, d and e are false
3. a and d are true & b, c and e are false
4. a and e are true & b, c and d are false
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPath of water movement from soil to xylem is :
1. soil root hair cortex pericycle endodermis metaxylem protoxylem
2. soil root hair cortex endodermis pericycle protoxylem metaxylem
3. soil root hair epidermis endodermis phloem xylem
4. soil root hair epidodermiscortex phloem xylem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTurgor pressure is also referred to as
1. solute potential
2. water potential
3. pressure potential
4. osmotic potential
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe process responsible for the movement of water from roots to all other parts of plants is
1. Evaporation of Water from leaves
2. Capillary action
3. Active transport
4. Both 1 and 2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology