Question

In reference to the origin of life, photosynthesis is more ancient than aerobic cellular respiration because ______.

Select one:
a. plants evolved before vertebrates
b. Earth's early atmosphere did not have oxygen
c. there is no reason for cellular respiration to occur without glucose from plants
d. carbon dioxide was contributing to global warming, to photosynthesizers recycled it.

Answer 1

Photosynthesis operates in plants and initially produced free oxygen to change the atmosphere to support non-plant organisms, consequently, a, plants arose before vertebrates and other oxygen breathing organisms, but plants did not evolve, they were created.

Answer 2

c there is no reason for cellular respiration