The Living World Question 21
Question: If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were [CPMT 2001; MP PMT 2001; BVP 2003; BHU 2003]
Options:
A) Autotroph, aerobic
B) Chemo-autotroph, anaerobic
C) Chemo-heterotroph, anaerobic
D) Heterotroph, anaerobic
Show Answer
Answer:
Correct Answer: C
Solution:
The first living organisms developed in reducing atmosphere were chemo-heterotrophs as they required ready-made organic materials as food and anaerobes as they were capable of respiration in the absence of oxygen.
BETA
