Test SeriesFree PYQsExamsPricing

NEET Biology question

BiologyTransport in PlantsNEET

Not in NEET syllabus

Choose the correct statements regarding the flow of sap in xylem.

I. Flow is driven by a higher concentration of solutes actively accumulated 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 the trunk. IV. Rapid flow of water puts tissues under pressure much more than atmospheric pressure.

Answer: (B)

Solution

I is accepted here in the sense that root pressure develops from active accumulation of ions (solutes) in the xylem of the root, which osmotically draws in water. III

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-127734