Question

Which type of respiration appeared first in the primitive organism and why

• A. Aerobic respiration as it releases more energy
• B. Anaerobic respiration as there was no $O_{2}$
• C. Anaerobic respiration because small orga_nism can only do it
• D. Aerobic respiration as no harmful waste products are formed

Answer 1

Answer: (B)

Anaerobic respiration as there was no $O_{2}$