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NEET UG BIOLOGY MCQ: TRANSPORT IN PLANTS
1
Medium
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Analyzing
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Which of the following statements is/are not true?
I.In CAM plants, stomata open during dark and remain closed during the day. II.Role of in stomatal opening is now universally accepted.
III.The water potential of root cells is higher than the water potential of soil. IV.Capillarity theory is the most accepted theory of water movement through plants. V.The walls of xylem vessels made up of lingo-cellulose have strong affinity for water molecules.
I.In CAM plants, stomata open during dark and remain closed during the day. II.Role of in stomatal opening is now universally accepted.
III.The water potential of root cells is higher than the water potential of soil. IV.Capillarity theory is the most accepted theory of water movement through plants. V.The walls of xylem vessels made up of lingo-cellulose have strong affinity for water molecules.
View answer and explanation
Correct option: B
II, III and IV
Option B (II, III and IV) is correct because the role of K+ in stomatal opening is well-accepted, the water potential of root cells is lower than the soil, and the cohesion-tension theory is the most accepted theory of water movement.
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Study the following statement and choose the correct option(s) from the codes from below
I. Root pressure provides a light push in the overall process of water transport
II. Root pressure causes the flow of water faster through xylem than it can be lost by transportation
III. In symplast pathway, water move exclusively through the cell wall and intercellular spaces
IV. Guttation is a cause of transpiration pull
V. Most plants fulfill their water requirement by transpiration pull Rate of imbibition is more in?
I. Root pressure provides a light push in the overall process of water transport
II. Root pressure causes the flow of water faster through xylem than it can be lost by transportation
III. In symplast pathway, water move exclusively through the cell wall and intercellular spaces
IV. Guttation is a cause of transpiration pull
V. Most plants fulfill their water requirement by transpiration pull Rate of imbibition is more in?