Question

Transpiration (loss of water) from aerial parts of the plants would facilitate

• A. Apoplastic movement of ions only
• B. Symplastic movement of ions only
• C. Both apoplastic and symplastic movement
• D. None of the above

Answer 1

The correct option is C Both apoplastic and symplastic movement

Transpiration is a physiological process of loss of water in the form of vapour through stomata of leaf to the atmosphere is a well-known process which facilitates transport of water and ions from the root cells to aerial parts of the plant. Thus, transpiration, being a passive process, creates a concentration gradient along the entire path of the water column. Therefore transpiration facilitates both apoplastic and symplastic movement of ions and water through transpiration pull against gravity.