NEET UG BIOLOGY MCQ: TRANSPORT IN PLANTS

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Choose correct statements regarding the flow of sap in xylem?
I. Flow is driven by higher concentration of sugar in the vessel elements
II. Flow from root to twigs and leaves would be reduced if leaves are removed
III. In the morning, sap begins to flow first in the twig then in trunk
IV. Rapid flow of water put tissues under pressure much more than atmospheric pressure

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Correct option: B

II and III

Option B (II and III) is correct because sap flow is influenced by leaf presence and starts in twigs before the trunk.

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Water rises in the stem due to Herbaceous plants have only about ____% of its fresh weight as dry matter? Wilting occurs when Munch hypothesis is based on 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?