AP BIOLOGY

PHOTOSYNTHESIS

C 4 PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following gas could get disappear from the atmosphere if all the photosynthetic activity were to stop
A
Nitrogen
B
CO2
C
Hydrogen
D
Oxygen
Explanation: 

Detailed explanation-1: -If photosynthesis ceased, there would soon be little food or other organic matter on Earth, most organisms would disappear, and Earth’s atmosphere would eventually become nearly devoid of gaseous oxygen.

Detailed explanation-2: -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-3: -Thus, NO 2 gas retards the rate of photosynthesis.

Detailed explanation-4: -If photosynthesizers were removed, the flow of energy would be cut off, and the other organisms would run out of food. In this way, photosynthesizers lay the foundation for every light-receiving ecosystem.

There is 1 question to complete.