Transpiration is the loss of water vapor through the

Transpiration is the loss of water vapor through the

• A. Stomata
• B. Leaves
• C. Stems
• D. Roots

Answer: (A)

Transpiration is the loss of water vapor through the stomata, the tiny pores on the leaf surface that regulate gas exchange. When stomata are open to let carbon dioxide in for photosynthesis, water vapor can diffuse out into the air, creating the transpiration stream that helps pull water up from the roots through the xylem. Leaves host these openings and are the primary site of transpiration, while stems and roots are not the main exit routes. Some water can escape through the cuticle, but this pathway is usually much smaller than through stomata. So, stomata is the best answer because they are the primary exit points for water vapor during transpiration.

Transpiration is the loss of water vapor through the stomata, the tiny pores on the leaf surface that regulate gas exchange. When stomata are open to let carbon dioxide in for photosynthesis, water vapor can diffuse out into the air, creating the transpiration stream that helps pull water up from the roots through the xylem. Leaves host these openings and are the primary site of transpiration, while stems and roots are not the main exit routes. Some water can escape through the cuticle, but this pathway is usually much smaller than through stomata. So, stomata is the best answer because they are the primary exit points for water vapor during transpiration.