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Question
Read the following statements :
i) Simple one-celled cyanobacteria originated on earth about 3.5 billion years ago.
ii) Approximate age of earth is 4.6 billion years.
iii) The term 'hot-dilute soup' was given by Haldane.
iv) Oparin-Haldane's view on the origin of life was experimentally proved by Stanley Miller.
v) The first life on earth originated from non-living material has been explained by the theory of abiogenesis.How many of the above statements are CORRECT?
Read the following statements :
i) Simple one-celled cyanobacteria originated on earth about 3.5 billion years ago.
ii) Approximate age of earth is 4.6 billion years.
iii) The term 'hot-dilute soup' was given by Haldane.
iv) Oparin-Haldane's view on the origin of life was experimentally proved by Stanley Miller.
v) The first life on earth originated from non-living material has been explained by the theory of abiogenesis.
How many of the above statements are CORRECT?
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Solution
The correct option is D Five
- Cyanobacteria are aquatic and photosynthetic unicellular organisms. They have the distinction of being the oldest known fossils, i.e., more than 3.5 billion years old.
- Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old. But it could certainly be older. Scientists tend to agree that our little planet is around 4.54 billion years old.
- Haldane proposed that the atmosphere was oxygen-free, and the combination of carbon dioxide, ammonia, and ultraviolet radiation gave rise to a host of organic compounds. The sea became a 'hot dilute soup' containing large populations of organic monomers and polymers.
- In 1953, two scientists set out to test Oparin and Haldane's hypothesis. Harold Urey and his student Stanley Miller tried to calculate the chemical constituents of the atmosphere of the early Earth.
- Abiogenesis, or informally the origin of life, is the natural process by which life arises from non-living matter, such as simple organic compounds. The transition from non-living to living entities was not a single event, but a gradual process of increasing complexity that involved molecular self-replication, self-assembly, autocatalysis, and cell membranes.
So, the correct option is 'Five'.
- Cyanobacteria are aquatic and photosynthetic unicellular organisms. They have the distinction of being the oldest known fossils, i.e., more than 3.5 billion years old.
- Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old. But it could certainly be older. Scientists tend to agree that our little planet is around 4.54 billion years old.
- Haldane proposed that the atmosphere was oxygen-free, and the combination of carbon dioxide, ammonia, and ultraviolet radiation gave rise to a host of organic compounds. The sea became a 'hot dilute soup' containing large populations of organic monomers and polymers.
- In 1953, two scientists set out to test Oparin and Haldane's hypothesis. Harold Urey and his student Stanley Miller tried to calculate the chemical constituents of the atmosphere of the early Earth.
- Abiogenesis, or informally the origin of life, is the natural process by which life arises from non-living matter, such as simple organic compounds. The transition from non-living to living entities was not a single event, but a gradual process of increasing complexity that involved molecular self-replication, self-assembly, autocatalysis, and cell membranes.
So, the correct option is 'Five'.
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