- 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 |
Subtopic: Â Origin of Life |
 86%
From NCERT
NEET - 2022
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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
Subtopic: Â Examples of Chemical Evolution |Â Origin of Life |
 76%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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 |
Subtopic: Â Origin of Life: Chemical Evolution: 1 |Â Origin of Life |
 52%
NEET - 2016
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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 |
Subtopic: Â Origin of Life: Chemical Evolution: 1 |Â Origin of Life: Chemical Evolution: 2 |Â Origin of Life |
 89%
From NCERT
AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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
Subtopic: Â Origin of Life |
 64%
From NCERT
AIPMT - 1998
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NEET 2023 - Target Batch - Aryan Raj Singh
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- 1(current)
Q. No.
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