The scientist who discovered the role of light in photosynthesis was

(A) Sachs

(B) Jan Ingenhousz

(C) Senebier

(D) Priestley

The scientist who discovered the role of light in photosynthesis was Jan Ingenhousz. He is renowned for demonstrating that light is essential for the process in which green plants absorb carbon dioxide and release oxygen. Ingenhousz also discovered that plants, like animals, undergo cellular respiration.

Additional Information:
During photosynthesis, green plants capture light energy to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. Oxygen is often released as a byproduct.

The process begins when light energy is absorbed by reaction centers containing the green pigment chlorophyll. Photosynthesis occurs in three main stages:

1. Harvesting energy – Chloroplasts absorb light energy.
2. Converting energy – Light energy is transformed into a usable form to power the plant’s cells.
3. Storing energy – Using water and carbon dioxide, the plant produces ATP and NADPH, which are then used to synthesize sugars, fatty acids, and glycerol.

Correct answer: Jan Ingenhousz.