Question

Which of the following is true about plants and cellular energy?

A. Plants can use light energy to produce food molecules or to obtain cellular energy from the bonds of these food
molecules during photosynthesis.
B. Plants can use light energy to produce food molecules or to obtain cellular energy from the bonds of these food
molecules during cellular respiration.
C. Plants use light energy to produce food molecules during cellular respiration and to obtain cellular energy from the bonds
of these food molecules during photosynthesis.
D. Plants use light energy to produce food molecules during photosynthesis and obtain cellular energy from the bonds of
these food molecules during cellular respiration.

Answer 1

Answer: D). Plants use light energy to produce food molecules during photosynthesis and obtain cellular energy from the bonds of

these food molecules during cellular respiration.

Explanation: During photosynthesis, plants use light energy absorbed from the sun to manufacture organic food substances such as glucose in the presence of carbon dioxide and water to give oxygen as the byproducts but during cellular respiration, glucose produced in photosynthesis is broken down in the presence of oxygen (a byproduct of photosynthesis) to generate energy in form of ATP with the release of carbon dioxide and water as byproducts.

Equation for photosynthesis is 6CO2 + 6H2O + solar energy --> C6H12O6 + 6O2

Equation for cellular respiration is C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP

Answer 2

The correct statement is

Option D. Plants use light energy to produce food molecules during photosynthesis and obtain cellular energy from the bonds of these food molecules during cellular respiration.

Step-by-step explanation:

Photosynthesis is food producing process in which food is produced by plants in the presence of sunlight while respiration is energy releasing process in which energy is released due to the breakdown of glucose molecules.