EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A green plant is kept in a brightly lighted area for 48 hours. What will most likely occur if the light intensity is reduced slightly during the next 48 hours?
A
Photosynthesis will stop completely.
B
The rate at which nitrogen is used by the plant will increase.
C
The rate at which oxygen is released from the plant will decrease.
D
Glucose production inside each plant will increase.
Explanation: 

Detailed explanation-1: -a green plant is kept in a brightly lit area for 48 hours. what will most likely occur if the light intensity is reduced slightly during the next 48 hours? the rate at which oxygen is released from the plant will decrease.

Detailed explanation-2: -We know that when light intensity is low, the synthesis of chlorophyll decreases. We also know that when the amount of chlorophyll decreases, the rate of photosynthesis decreases as well. Therefore, the rate of photosynthesis decreases when light intensity is low.

Detailed explanation-3: -When the intensity of the light is decreased the quantity of photosynthesis taking place will then likely decrease, thereby decreasing oxygen output.

Detailed explanation-4: -Q14. What would happen if a plant were exposed ONLY to green light? Why? Answer: Because plants reflect green light, they would have a difficult time collecting enough light to perform photosynthesis.

Detailed explanation-5: -Photosynthesis is not performed by plants at night. Plants can only undergo photosynthesis at night if they are exposed to the appropriate wavelengths of artificial light. With the help of the chlorophyll pigment, light energy is absorbed. By the process of photosynthesis, light energy is turned into chemical energy.

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