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Q. No.Select the option representing correct examples of analogous organs.
(a) Sweet potato and potato
(b) Vertebrate hearts and brains
(c) Thorn of Bougainvillea and tendril of Cucurbita
(d) Eyes of the Octopus and of mammals
(e) Flippers of penguins and dolphins
1. (a), (d), (e)
2. (a), (b), (c)
3. (b), (c), (d)
4. (c), (d), (e)
Subtopic: Concept of Organic Evolution: Evidence |
89%
Level 1: 80%+
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Marine mollusc having white shell attached to white goose neck barnacles protect themselves from predators. Mollusc having dark tan shell attached to tan coloured rocks survive whereas mollusc having intermediate shell colour fell prey
to predator. The type of natural selection in above context is
1. Stabilising selection
2. Directional selection
3. Balancing selection
4. Disruptive selection
to predator. The type of natural selection in above context is
1. Stabilising selection
2. Directional selection
3. Balancing selection
4. Disruptive selection
Subtopic: Natural Selection |
61%
Level 2: 60%+
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How many statements given below are correct?
1. Two
2. Three
3. Four
4. One
| (a) | Seed ferns are common ancestors for Gnetales and cycads. |
| (b) | Zosterophyllum are avascular land plants that evolved in the Silurian period. |
| (c) | Lycopods are the oldest extant vascular land plants. |
| (d) | Sphenopsids evolved from the group of plants to which Psilophyton belongs. |
1. Two
2. Three
3. Four
4. One
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
Level 3: 35%-60%
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Read the following statements and choose the correct option.
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Only statement A is correct
4. Only statement B is correct
| Statement A: | Similarities in proteins and genes among diverse organisms indicates common ancestry. |
| Statement B: | Humans and chimpanzees also show biochemical similarities. |
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Only statement A is correct
4. Only statement B is correct
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens | Biochemical Evidences |
89%
Level 1: 80%+
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How many options given in the box are not true for the Darwinian theory of evolution?
Directional variations, Saltation, Minor variations, Inheritance of ‘factors’, Heritable variations, Reproductive fitness
1. Four
2. Two
3. Three
4. Five
Directional variations, Saltation, Minor variations, Inheritance of ‘factors’, Heritable variations, Reproductive fitness
1. Four
2. Two
3. Three
4. Five
Subtopic: Sources of Variation: 2 |
61%
Level 2: 60%+
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In Lederberg's replica plating experiment, colonies of antibiotic resistant bacteria were observed, which indicates
| 1. | Pre-existing advantageous mutations when selected will result in observation of new phenotypes |
| 2. | Exposure to antibiotics causes mutation that confer antibiotic resistance |
| 3. | Mutations are directional variations |
| 4. | All antibiotic resistant bacteria which exist today are result of artificial selection |
Subtopic: Hardy Weinberg Law |
59%
Level 3: 35%-60%
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Dinosaurs dominated the World in which of the following geological era?
1. Coenozoic
2. Jurassic
3. Mesozoic
4. Devonion
1. Coenozoic
2. Jurassic
3. Mesozoic
4. Devonion
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
Level 4: Below 35%
NEET - 2013
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The finch species of Galapagos Islands are grouped according to their food sources. Which of the following is not a finch food?
1. Carrion
2. Insects
3. Tree buds
4. Seeds
1. Carrion
2. Insects
3. Tree buds
4. Seeds
Subtopic: Concept of Organic Evolution: Evidence |
66%
Level 2: 60%+
NEET - 2013
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Oparin of Russia and Haldane of England proposed that:
| I: | the first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
| II: | formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
| III: | The conditions on earth were – high temperature, volcanic storms, reducing atmosphere containing CH4, NH3, etc. |
| 1. | Only I and II are correct. |
| 2. | Only I and III are correct. |
| 3. | Only II and III are correct. |
| 4. | I, II and III are correct. |
Subtopic: Cosmic Evolution | Urey & Miller Experiment | Other Theories of Origin of Life |
79%
Level 2: 60%+
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| Assertion (A): | Big bang theory says that the universe is still expanding. |
| Reason (R): | The expansion of the universe caused the decrease in temperature. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Cosmic Evolution |
55%
Level 3: 35%-60%
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