Xylem transports from roots to the aerial parts of the plants
(1) Water, mineral salts
(2) Some organic Nitrogen
(3) Inorganic solutes, Hormones
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe source and sink may be reversed
(1) Depending on the season
(2) Depending on the plant's needs
(3) Depending on the phloem type
(4) Both A and B
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following helps in ascent of sap?
(1) Root pressure
(2) Transpiration
(3) Capillarity
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMass flow or bulk flow system is the movement of substances in bulk or en masse from one point to another point as a result of
(1) Pressure Difference between two points
(2) Osmotic gradient between two points
(3) Concentration gradient between two points
(4) Cannot be predicted
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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 & BiologyThe continuous excretion of watery substance
from stump of a well-watered potted plant after
cutting off the shoot slightly above the base is
due to
1. root pressure
2. guttation
3. transpiration
4. imbibitions
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the xylem, a continuous chain of water, when it is broken, is re-established by:
1. Guttation
2. Root pressure
3. Imbibition
4. Transpiration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology