The Pores Through Which Leaves Exchange Atmospheric Gases with Leaf

Question

The pores through which leaves exchange atmospheric gases with leaf cells for photosynthesis are
A) stomata.
B) sieve tube elements.
C) guard cells.
D) epidermal cells.
E) petioles.

Accepted Answer

Stomata are the pores through which leaves exchange atmospheric gases with leaf cells for photosynthesis. Sieve tube elements are for transportation of organic compounds, guard cells surround stomata and control their opening and closing, epidermal cells make up the outer layer of the leaf, and petioles connect the leaf to the stem.