- 1(current)
Q. No.The concept of chemical evolution is based on:
| 1. | Possible origin of life by a combination of chemicals under suitable environmental conditions. |
| 2. | Crystallization of chemicals |
| 3. | Interaction of water, air, and clay under intense heat |
| 4. | Effect of solar radiation on chemicals |
Subtopic: Examples of Chemical Evolution |
88%
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According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?
| 1. | Oxygen | 2. | Hydrogen |
| 3. | Water vapour | 4. | Methane |
Subtopic: Examples of Chemical Evolution |
93%
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An important evidence in favor of organic evolution is the occurrence of
1. Homologous and vestigial organs
2. Analogous and vestigial organs
3. Homologous organs only
4. Homologous and analogous organs
Subtopic: Examples of Chemical Evolution |
50%
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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: Examples of Chemical Evolution | Origin of Life |
78%
From NCERT
NEET - 2020
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