Question

A milestone contribution to the understanding of photosynthesis was made by Commelius von Niel, which was based on the studies of dl) Bacteria (2)Alga (3)Angiospermic plant(4)Lower plant

Answer 1

Answer:

1) Bacteria

Explanation:

He used Purple and Green Bacteria .

Experimental Result - Photosynthesis is essentially a light dependant reaction.

Answer 2

Answer:

The correct answer is 1) Bacteria.

Explanation:

• Photosynthesis is the process of synthesis of glucose by chlorophyll containing plants in the presence of sunlight by utilising water and carbon dioxide.
• In the process, oxygen is also released by these plants.
• Commelius von Niel performed experiments on purple sulphur bacteria and green sulphur bacteria in 1931.
• He concluded that these organisms undergo a redox reaction in the presence of sunlight, in which hydrogen ions from a donor reduce carbon dioxide from the environment into cellular organic materials.
• He also defined prokaryotes as organisms lacking a nuclear membrane.
• His experiments were later on verified by the scientist Hill, who also gave the equation for the reaction occuring during photosynthesis.