Question

The gas released during photosynthesis in plant is-
a. Carbon dioxide
b. Oxygen
c. Methane
d. Hydrogen
e. Nitrogen

Answer 1

Hint: The green plants and certain other organisms utilize the light energy of the sun to produce food by the process of photosynthesis.

Complete answer:
> Photosynthesis is the process by which the green plants make their own food in the form of glucose and other energy rich compounds. It involves the conversion of carbon dioxide, water and minerals into sugar and oxygen using sunlight. During this process, the light energy of the sun is transformed into chemical energy. The chemical energy is later on used as fuel to release energy that is needed to perform various life activities of the living organisms.

> Carbon dioxide and water are used as raw materials during photosynthesis to manufacture complex carbohydrates such as sugars and in most of the cases, oxygen is released as a waste product. Hence, the process of photosynthesis involves the intake of carbon dioxide and the release of oxygen.

> The release of oxygen during the photosynthesis is due to photolysis of water in order to fill the gap in the photo system, which is caused by the excitement of the electron.
This reaction is often considered a reversible reaction and takes place in presence of sunlight.

> During the light reaction photosynthesis, oxygen is released. Water is split into oxygen and also as H+ protons and electrons. The electrons produced reduce the P680+ pigments in photosystem II after donating their excited electrons to primary electron acceptor. The H+ protons are then released into the stroma for later usage. The $O_2$ molecules are released as waste from plants.

> Oxygen is released during the process of photosynthesis.
So, the correct answer is option b) Oxygen.

Note: The molecules of carbon dioxide and oxygen of the reaction should be considered as six molecules of carbon dioxide produce one molecule of glucose and six molecules of gaseous oxygen. The release of oxygen during the photosynthesis is due to photolysis of water in order to fill the gap in the photo system, which is occurred by the excitement of electron