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Question
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
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Solution
The lower surface of leaf is sheltered from direct sunlight. If more stomata are on the upper surface of a leaf, then excessive transpiration would occur, resulting in quick wilting of the plant. Hence most plants have more numerous stomata on the lower surface of a leaf to control the rate of transpiration.
RELATED QUESTIONS
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Most transpiration occurs during midday.
Give Reasons for the following:
Land plants die if their roots remain waterlogged.
What are the disadvantages of transpiration?
Explain the Term :
Wilting
Explain the Term
Lenticel
Give Technical Term
Loss of water from the aerial parts of a plant.
Give Technical Term
Main function of lenticel.
Choose the Odd One Out
Give a reason/suitable explanation.
Forests tend to bring more rains.
