[Campbell Biology P.840] Which of the following statements accurately describe the character... | Practice Question

Which of the following statements accurately describe the characteristics of long-distance bulk flow in plants, as described in the text? Select all that apply

  • A: It is an effective transport mechanism for long distances within a plant because it is much faster than diffusion.
  • B: It is primarily driven by differences in solute concentration, similar to osmosis.
  • C: It involves the movement of liquid from an area of higher pressure to an area of lower pressure.
  • D: It occurs within specialized vascular tissues such as tracheids, vessel elements, and sieve-tube elements.
  • E: Unlike diffusion, bulk flow is significantly affected by the diameter of the conducting pipes.

Explanation

The text states that bulk flow is an effective transport mechanism for long distances because diffusion is too slow. It occurs in response to a pressure gradient, moving from higher to lower pressure, and is independent of solute concentration. It happens in vascular tissues tracheids, vessel elements, sieve-tube elements . Finally, the volume of flow depends on the pipe's diameter.