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  • 1(current)
Q. No.

Panspermia, an idea that is still a favorite for some astronomers, means:
1.  Creation of life from dead and decaying matter
2.  Creation of life from chemicals
3.  Origin of sperm in human testes
4.  Transfer of spores as a unit of life from other planets of Earth
Q1:
 86% From NCERT NEET - 2022
Subtopic:  Origin of Life |
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After about how many years of the formation of the earth, life appeared on this planet?

1. 500 billion years

2. 50 million years

3. 500 million years

4. 50 billion years

Q2:
 76% From NCERT NEET - 2020
Subtopic:  Examples of Chemical Evolution | Origin of Life |
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Which of the following is the correct sequence of events in the origin of life? 

I: Formation of protobionts. 
II: Synthesis of organic monomers. 
III: Synthesis of organic polymers. 
IV: Formation of DNA-based genetic systems.

1. I, II, III, IV 2. I, III, II, IV
3. II, III, I, IV 4. II, III, IV, I
Q3:
 52% NEET - 2016
Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
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The concept of chemical evolution is based on:

1. crystallization of chemicals
2. interaction of water, air, and clay under intense heat
3. effect of solar radiation on chemicals
4. possible origin of life by a combination of chemicals
under suitable environmental conditions

Q4:
 89% From NCERT AIPMT - 2007
Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 | Origin of Life |
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In present times, the origin of life is not possible from inorganic compounds due to:
1. Non-availability of raw material
2. High concentration of O2 in the atmosphere
3. Decrease in temperature
4. Excess of pollution

Q5:
 64% From NCERT AIPMT - 1998
Subtopic:  Origin of Life |
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