Question

Write notes on Transpiration <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> [Textbook Question 3b pg no.178]

Answer 1

Explanation

• Transpiration is the process of loss of water by leaves through evaporation. This occurs via stomata.
• Stomata are small pores surrounded by guard cells present in leaves. Opening and closure of these pores are determined by the turgidity of guard cells.
• Less than 1% of water is used for photosynthesis and the remaining is released by transpiration.
• Xylem compensates for the loss of water through stomata by increasing the absorption of fluids. Pull of water to larger heights due to transpiration is called transpiration pull.
• Thus transpiration also plays an important role in the absorption and distribution of water and minerals to all plant parts.