Multiple choice

Which of the following structures surrounds the stomata?

  1. Pollen grains

  2. Guard cells

  3. Petals

  4. Mitochondria

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

Stomata are small apertures for which opening and closing is controlled by a pair of cells known as guard cells. Pollen grains and petals are parts of flower and mitochondria are cell organelles.