1. Who suggested that life must have developed from the simple inorganic molecules like methane, hydrogen etc. which were present on the earth soon after it was formed?
A. Darwin
B. Marrie Curie
C. Haldane
D. None of the above
Ans. C
Explanation: J.B.S Haldane, a British scientist suggested in 1929 that life must have developed from the simple inorganic molecules like methane, hydrogen etc. which were present on the earth soon after it was formed.
2. Aves have evolved from:
A. Amphibians
B. Arthropods
C. Mammals
D. Reptiles
Ans. D
Explanation: Birds evolved from theropod dinosaurs during the Jurassic around 165–150 million years ago. Birds aren't just closely related to dinosaurs, they really are dinosaurs! This is what most people mean when they say that birds are reptiles, although technically according to the phylogenetic system mammals are also reptiles.
3. The theory of origin of life on earth is proposed by:
A. Haldane
B. Stanley Miller
C. Harold C. Urey
D. Lamarck
Ans. A
Explanation: The theory of origin of life on earth is proposed by Haldane was confirmed by the experiments conducted by Stanley L. Miller and Harold C. Urey.
4. Which of the following are the postulates of Darwin’s theory of evolution?
A. Within any population, there is natural variation.
B. Even though all species produce a large number of offsprings, populations remain fairly constant naturally.
C. The struggle for survival within populations eliminates the unfit individuals.
D. All the above are correct
Ans D
Explanation: Darwin’s theory of evolution can be described as: within any population, there is natural variation. Some individuals have more favourable variations than others. Even though all species produce a large number of offsprings, populations remain fairly constant naturally. The struggle for survival within populations eliminates the unfit individuals. This is called natural selection.
5. The process by which new species develop from the existing species is called:
A. Homologous
B. Analogous
C. Speciation
D. Genetic variation
Ans. C
Explanation: Speciation is the formation of new species.
A. Darwin
B. Marrie Curie
C. Haldane
D. None of the above
Ans. C
Explanation: J.B.S Haldane, a British scientist suggested in 1929 that life must have developed from the simple inorganic molecules like methane, hydrogen etc. which were present on the earth soon after it was formed.
2. Aves have evolved from:
A. Amphibians
B. Arthropods
C. Mammals
D. Reptiles
Ans. D
Explanation: Birds evolved from theropod dinosaurs during the Jurassic around 165–150 million years ago. Birds aren't just closely related to dinosaurs, they really are dinosaurs! This is what most people mean when they say that birds are reptiles, although technically according to the phylogenetic system mammals are also reptiles.
3. The theory of origin of life on earth is proposed by:
A. Haldane
B. Stanley Miller
C. Harold C. Urey
D. Lamarck
Ans. A
Explanation: The theory of origin of life on earth is proposed by Haldane was confirmed by the experiments conducted by Stanley L. Miller and Harold C. Urey.
4. Which of the following are the postulates of Darwin’s theory of evolution?
A. Within any population, there is natural variation.
B. Even though all species produce a large number of offsprings, populations remain fairly constant naturally.
C. The struggle for survival within populations eliminates the unfit individuals.
D. All the above are correct
Ans D
Explanation: Darwin’s theory of evolution can be described as: within any population, there is natural variation. Some individuals have more favourable variations than others. Even though all species produce a large number of offsprings, populations remain fairly constant naturally. The struggle for survival within populations eliminates the unfit individuals. This is called natural selection.
5. The process by which new species develop from the existing species is called:
A. Homologous
B. Analogous
C. Speciation
D. Genetic variation
Ans. C
Explanation: Speciation is the formation of new species.
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