Transport of Water and Solutes in Plants

Review Questions

When stomata open, what occurs?

  1. Water vapor is lost to the external environment, increasing the rate of transpiration.
  2. Water vapor is lost to the external environment, decreasing the rate of transpiration.
  3. Water vapor enters the spaces in the mesophyll, increasing the rate of transpiration.
  4. Water vapor enters the spaces in the mesophyll, decreasing the rate of transpiration.

Hint:

A

Which cells are responsible for the movement of photosynthates through a plant?

  1. tracheids, vessel elements
  2. tracheids, companion cells
  3. vessel elements, companion cells
  4. sieve-tube elements, companion cells

Hint:

D