Multiple choice

Small spots on the stem that allow gas exchange:

  1. Xylem

  2. Internode

  3. Lenticels

  4. Node

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lenticels are small, porous openings in the bark of stems and roots that facilitate gas exchange between the internal tissues and the atmosphere. Xylem transports water, while nodes and internodes are structural regions of the stem.