Question

which of the following is the correct definition of photosynthesis?
a) the process used by autotrophic organisms to produce energy for all life on earth
b) the process used by organisms to convert light energy to chemical energy
c) the chemical reaction that produces sugars out of carbon dioxide and fertilizers
d) the synthesis of photons

Explanation:

• Option a is too broad; it does not specify the energy conversion core of photosynthesis.
• Option b accurately describes the key process of photosynthesis: autotrophic organisms (like plants) convert light energy from the sun into stored chemical energy in glucose.
• Option c is incorrect because photosynthesis uses water and carbon dioxide, not fertilizers, to produce sugars.
• Option d is wrong; photosynthesis does not synthesize photons (light particles), it uses them.

Answer:

b) The process used by organisms to convert light energy to chemical energy