Subtopic: Â Concept of Organic Evolution: Evidence |
 56%
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Gill clefts and notochord appear in the embryonic development of all vertebrates from fishes to mammals.
This supports the theory of
1. Recapitulation
2. Metamorphosis
3. Biogenesis
4. Abiogenesis
This supports the theory of
1. Recapitulation
2. Metamorphosis
3. Biogenesis
4. Abiogenesis
Subtopic: Â Concept of Organic Evolution: Evidence |
 65%
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Cycas and Ginkgo are connecting links between
1. Bryophytes and pteridophytes
2. Pteridophytes and gymnosperms
3. Gymnosperms and angiosperms
4. Thallophyta and bryophyta
1. Bryophytes and pteridophytes
2. Pteridophytes and gymnosperms
3. Gymnosperms and angiosperms
4. Thallophyta and bryophyta
Subtopic: Â Concept of Organic Evolution: Evidence |
 57%
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Which one of the following is not a living fossil?
1. Peripatus
2. King crab (Limulus)
3. Archaopteryx
4. Sphenodon
1. Peripatus
2. King crab (Limulus)
3. Archaopteryx
4. Sphenodon
Subtopic: Â Concept of Organic Evolution: Evidence |
 58%
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Presence of tail and coarse hair in human baby is
1. Radiation
2. Atavism
3. Mutation
4. Crossing over
1. Radiation
2. Atavism
3. Mutation
4. Crossing over
Subtopic: Â Concept of Organic Evolution: Evidence |
 74%
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" It is a stochastic process based on chance events in nature and chance mutation in the organisms".
This statement tells us about
1. Non directional nature of evolution
2. Directinal mutations leading to natural selection
3. Lack of anthropogenic impact on the evolutionary time scale
4. Constant rate of reproduction and evolution in all organims
This statement tells us about
1. Non directional nature of evolution
2. Directinal mutations leading to natural selection
3. Lack of anthropogenic impact on the evolutionary time scale
4. Constant rate of reproduction and evolution in all organims
Subtopic: Â Concept of Organic Evolution: Evidence |
 58%
From NCERT
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Dinosaurs were dominant in the world in which of the following Era?
1. Cenozoic
2. Jurassic
3. Mesozoic
4. Devonian
1. Cenozoic
2. Jurassic
3. Mesozoic
4. Devonian
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
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Study of history of life forms on earth is known as
1. Evolutinary biology
2. Morphology
3. Physiology
4. Biogenesis
1. Evolutinary biology
2. Morphology
3. Physiology
4. Biogenesis
Subtopic: Â Concept of Organic Evolution: Evidence |
 85%
From NCERT
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Read the following sentences carefully and choose the option having correct statements
1. (a) and (b) only
2. (b) and (c) only
3. (b), (c) and (d) only
4. (a), (b), (c) and (d)
| (a) | Units of life called spores were transferred to different planets including earth according to theory of spontaneous generation |
| (b) | Oparin and Haldane proposed that life arises from non-living organic molecules by chemical evolution |
| (c) | Psilophytin can be considered as ancestor of conifers |
| (d) | Coelacanth possibly evolved into the first amphibians |
1. (a) and (b) only
2. (b) and (c) only
3. (b), (c) and (d) only
4. (a), (b), (c) and (d)
Subtopic: Â Examples of Chemical Evolution |Â Other Theories of Origin of Life |Â Concept of Organic Evolution: Evidence |Â Origin of Life |Â A BRIEF ACCOUNT OF EVOLUTION |
 54%
From NCERT
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Big-Bang theory attempts to explain the
1. Origin of life
2. Origin of species
3. Origin of Earth
4. Origin of Universe
1. Origin of life
2. Origin of species
3. Origin of Earth
4. Origin of Universe
Subtopic: Â Origin of Life |
 80%
From NCERT
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