Question

which of the following statements best describes the relationship between photosynthesis and cellular respiration?
a photosynthesis occurs only in plants; cellular respiration occurs only in animals.
b photosynthesis releases carbon dioxide and water as products, which cellular respiration uses as reactants.
c photosynthesis releases atp; cellular respiration takes in atp.
d photosynthesis stores energy in glucose; cellular respiration releases energy from glucose.

Explanation:

Photosynthesis is a process in plants (also some bacteria and protists) that uses light - energy to convert carbon dioxide and water into glucose and oxygen, storing energy in glucose. Cellular respiration is a process in all living cells that breaks down glucose to release energy in the form of ATP. Option A is incorrect as cellular respiration occurs in plants too. Option B is wrong because photosynthesis takes in carbon dioxide and water and releases oxygen and glucose, while cellular respiration takes in oxygen and glucose and releases carbon dioxide and water. Option C is incorrect as photosynthesis produces ATP during the light - dependent reactions and uses it in the Calvin cycle, and cellular respiration produces ATP from the breakdown of glucose.

Answer:

D. Photosynthesis stores energy in glucose; cellular respiration releases energy from glucose.