Question

The exchange of gases occurs through tiny pores called present at the surface of the leaf.

• A. veins
• B. stomata
• C. lower
• D. upper
• E. nose
• F. lenticel

Answer 1

Answer: (B), (C)

The correct options are
B stomata
C lower

The exchange of gases as well as water vapour occurs through tiny pores called stomata present on the lower surface of the leaf. The positioning of the stomata on the lower surface of the leaf prevents the direct exposure of stomata to sunlight and checks excessive loss of water from the plants.