NEET BIOLOGY

PLANT PHYSIOLOGY

TRANSPORT IN PLANT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why does the plant even have holes in the leaf if they lose water through them?
A
they need O2 gas for photosynthesis
B
they need CO2 gas for photosynthesis
C
they need food to enter through the holes
D
they use the holes to convert sun energy to electron energy
Explanation: 

Detailed explanation-1: -Photosynthesis results in a plant losing water through its leaves through the process of transpiration. Essentially, water uptaken by the roots of a plant evaporate through the stomata allowing carbon dioxide to enter. This provides the carbon dioxide required for photosynthesis.

Detailed explanation-2: -Plants take up the water that they need from the soil through their roots. Carbon dioxide is a gas found in the air; plants can take in this gas through tiny holes in their leaves. Once they have water and carbon dioxide, they can use energy from sunlight to make their food.

Detailed explanation-3: -During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Detailed explanation-4: -Plants lose the majority of their water through stomata. Thus, they close their stomata at night to prevent excess loss of water through them. Stomata can not be closed in the daytime, because the plant has to intake carbon dioxide for the process of photosynthesis.

There is 1 question to complete.