Question

Maximum water loss occurs through

• A. Lenticles
• B. Hydathodes
• C. Stomata
• D. Cuticle

Answer 1

The correct option is C Stomata

Water is essential for plants, it absorbs water from the soil through roots. However, plants absorbs much water, but only a small amount of water is used for their growth and metabolism. Persisting 97 - 99.5% of absorbed water is lost by transpiration. Transpiration is the process of elimination water in the form of water vapour from the aerial parts such as leaves, flowers and stem. The leaves contains tiny pores called stoma which helps in the gas exchange of oxygen and carbon dioxide. More the stoma (pores) on the leaves result in the increase in the transpiration via stomata. The leaf with the bigger surface area will transpire more when compared to the lower surface area. Each stomata is gaurded by guard cells which helps in the opening and closing of stomata. When stomata are open, transpiration rates increase; when they are closed, transpiration rates decrease.

So, the correct answer is option C.