DENDROLOGY

TREE PHYSIOLOGY

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Terrestrial plants have stomata on the surface of their leaves. Stomata are surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma. Which of the following best explains how the structure of the leaf is used in processes that occur in plants?
A
Water enters the plant through the surface of the leaf for transpiration
B
Gases for photosynthesis are exchanged through the surface of the leaf
C
Energy for cellular reproduction is absorbed through the surface of the leaf
D
Carbon dioxide enters the plant through the surface of the leaf for cellular reproduction
Explanation: 

Detailed explanation-1: -Terrestrial plants have stomata on the surface of their leaves. A single stomata is surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma.

Detailed explanation-2: -Several environmental factors affect stomata opening, including hormone, light quality and intensity, air humidity, atmospheric CO2 concentration, biotic and abiotic stresses.

Detailed explanation-3: -Stomata are more numerous on the lower side of the leaf to prevent transpiration. Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.

There is 1 question to complete.