Answer:
f. cyanobacteria
Explanation:
Cyanobacteria are a group of photosynthetic bacteria. They have the ability to use water as a source of an electron during the process of photosynthesis. Splitting of water produces molecular oxygen that is released into the surroundings. In this way, cyanobacteria release oxygen gas in the air. The primitive atmosphere of the earth was reducing and did not have oxygen gas. The first photosynthetic organisms that could split water during photosynthesis are supposed to be cyanobacteria. These prokaryotes added oxygen to the atmosphere of the early earth and gradually made it oxidative from reducing.
Answer:
The correct answer will be Option-A
Explanation:
Photorespiration is the process which takes place in the conditions observed with high atmospheric temperature.
During these conditions, the binding affinity of the RUBISCO enzyme increases for the oxygen which leads to the formation of two compounds mainly which is a three-carbon compound called 3- phosphoglycerate and a two-carbon compound called 2-phosphoglycolate.
The three-carbon compound can enter the Calvin cycle but two carbon compound cannot enter the Calvin cycle and thus is usually lost.
Thus, option-A is the correct answer.
Green plants and certain other animals use a process called photosynthesis to convert light energy into chemical energy. Sunlight is the primary, non-recyclable, and easily accessible component of photosynthesis.
In the electromagnetic radiation that the Sun emits, sunlight is included. Water (H2O) and carbon dioxide (CO2) are ingested by plants during photosynthesis from the soil and atmosphere. In contrast to carbon dioxide, which is reduced within the plant cell and obtains electrons, water is oxidised within the cell of the plant. Due to this, carbon dioxide and water are converted into glucose and oxygen, respectively.
We can therefore conclude that green plants and some other animals convert light energy into chemical energy through a process known as photosynthesis. The most important, easily accessible, non-recyclable element in photosynthesis is sunlight.
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