NEET Solved Paper 2016 Question 58
Question: Following are the two statements regarding the origin of life: (i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes. (ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct?
Options:
A) (i) is correct but (ii) is false
B) (ii) is correct but (i) is false
C) Both (i) and (ii) are correct
D) Both (i) and (ii) are false
Show Answer
Answer:
Correct Answer: C
Solution:
- (i) The earliest organisms that appeared on Earth were indeed non-green and presumably anaerobes. These organisms did not require oxygen for their survival and thrived in the anaerobic conditions of early Earth.
(ii) The first autotrophic organisms were chemoautotrophs, which obtained their energy from chemical reactions involving inorganic molecules, rather than from sunlight. These chemoautotrophs did not release oxygen as a byproduct of their metabolic processes.
BETA
