Question

Which of the following statements is correct about the gases which participate in photosynthesis?

Carbon dioxide is used up, and oxygen is produced.
Oxygen is used up, and carbon dioxide is produced.
Carbon dioxide is used up, and hydrogen is produced.
Hydrogen is used up, and carbon dioxide is produced.

Answer 1

If you look at the equation for photosynthesis, it is:
6CO2 + 6H2O + light energy ---> C6H12O6 + 6O2

Since CO2 (carbon dioxide) is on the left side of the equation, it is being consumed, or used up. Since O2 (oxygen) is on the right side, it is being produced.

The correct answer is the first one, "Carbon dioxide is used up, and oxygen is produced."

Answer 2

During photosynthesis, carbon dioxide is used up, and oxygen is produced.

What is carbon dioxide?

carbon dioxide is a colourless gas having a faint sharp odour and it is one of the most important greenhouse gases linked to global warming.

What is oxygen?

Oxygen is a colourless and odourless gas which support life on earth. It is non combustible, but will actively support the burning of combustible materials.

What is photosynthesis?

• The photosynthesis is a process by which plants make their own food in the presence of sunlight using carbon-dioxide, water, minerals and chlorophyll present in leaves.

• During the process of photosynthesis, plants takes up carbon dioxide and water and plants produces energy and oxygen in the form of sugar.

• The water is oxidized within the plant cell, which means it loses electrons, while the carbon dioxide is reduced, which means it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Hence, carbon dioxide is used up, and oxygen is produced in photosynthesis.

To learn more about photosynthesis here

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