Question

The process of photosynthesis is -
(A) Reductive, exergonic and catabolic (B) Reductive, endergonic,and catabolic (C) Reductive, exergonic,and anabolic (D) Reductive, endergonic,and anabolic

Answer 1

Hint: Photosynthesis is a process by which sugar molecules are produced using small molecules and light energy is used. It is also a type of redox reaction .

Complete answer:
An endergonic process is a process in which energy is required for its occurrence and in photosynthesis, light energy is used for converting $C{ O }_{ 2 }$, water, and minerals into oxygen.
The anabolic process is a process in which an organism uses energy to form complex substances and in photosynthesis, light energy is used by plants to convert $C{ O }_{ 2 }$ and water into glucose.
In Photosynthesis electrons are transferred from water to $C{ O }_{ 2 }$ molecules, forming sugar molecules.
In this process, the water is oxidized as it loses electrons and the $C{ O }_{ 2 }$ is reduced as it gains electrons.
Hence photosynthesis is a reductive process.
The equation of photosynthesis is :
$ 6C{ O }_{ 2 }+6{ H }_{ 2 }O+light\rightarrow { C }_{ 6 }\underset { GLUCOSE }{ { H }_{ 12 } } { O }_{ 6 }\quad +\quad 6{ O }_{ 2 } $
During this process, Oxygen is released which is very essential for our survival. Oxygen plays a very important role in respiration.
Many animals and organisms including humans require oxygen to stay alive.
Photosynthesis also helps in the proper flow of the carbon cycle between all biotic and abiotic factors of Earth.
Plants are called autotrophs because they can prepare their own food by using light energy.

So, the correct answer is ‘(D) Reductive, endergonic, and anabolic’.

Note: Many of us get confused between catabolic and anabolic and secondly in exergonic and endergonic. In Anabolism simple substances are converted into complex substances and energy is used. In Catabolism, complex substances break down and simpler substances are formed. And energy is released.
Exergonic- Energy is released. Endergonic- Energy is absorbed or used.