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Q. No.Select the correct statement regarding the mutation theory of evolution:
1.
This theory was proposed by Alfred Wallace.
2.
Variations are small directional changes.
3.
Single-step large mutation is a cause of speciation.
4.
Large differences due to mutations arise gradually in a population.
Subtopic: Mechanism of Evolution |
71%
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Match column-I with column-II and select the correct option:
| Column I | Column II | ||
| (a) | Louis Pasteur | (i) | Chemical evolution theory |
| (b) | Early Greek thinkers | (ii) | Inheritance of acquired characters |
| (c) | Oparin and Haldane | (iii) | Disapproved spontaneous generation theory |
| (d) | Lamarck | (iv) | Cosmozoic theory |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (i) | (ii) | (iii) | (iv) |
Subtopic: Examples of Chemical Evolution | Urey & Miller Experiment | Other Theories of Origin of Life | Theory of Evolution & Lamarckism | A BRIEF ACCOUNT OF EVOLUTION |
91%
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Assertion (A): Adaptive ability is inherited.
Reason (R): Individuals having heritable and useful variations reproduce better and leave more progeny.
In the light of above statements, select the correct answer from the following options.
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
Reason (R): Individuals having heritable and useful variations reproduce better and leave more progeny.
In the light of above statements, select the correct answer from the following options.
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: Concept of Organic Evolution: Evidence |
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Read the following statements and choose the correct option.
| Statement (A): | Change in gene frequency in a small population by chance is known as genetic drift. |
| Statement (B): | When gene migration occurs between A and B population, gene frequencies change in both the populations. |
| 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: Hardy Weinberg Law |
83%
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How many statements given below are incorrect?
1. Three
2. Two
3. One
4. Four
| (a) | Homo erectus fossil was discovered in Java in 1981. |
| (b) | The Neanderthal man lived in near east and central Africa between 75,000–10,000 years ago. |
| (c) | Australopithecines were probably taller than 4 feet but did not walk upright. |
| (d) | Few fossils of man-like bones have been discovered in Ethiopia and Tanzania. |
1. Three
2. Two
3. One
4. Four
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens |
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Select the incorrect match.
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
Subtopic: Definition & Types of Evolution | A BRIEF ACCOUNT OF EVOLUTION |
51%
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Read the following statements and select the option which includes only correct statements.
1. (A) and (B)
2. (C) and (D)
3. (A) and (C)
4. (A), (C) and (D)
| (A) | Thecodonts are extant ancestors of crocodiles and birds. |
| (B) | Mammals have evolved from sauropsids. |
| (C) | Snakes are closer to lizards than tuataras. |
| (D) | Birds are closer to dinosaurs than crocodiles. |
1. (A) and (B)
2. (C) and (D)
3. (A) and (C)
4. (A), (C) and (D)
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Embryo of Rohu and Alligator have a row of vestigial gill slits just behind the head but it is a functional organ only in Rohu and not found in Alligator. This evidence for evolution was proposed by
| 1. | Karl Ernst von Baer | 2. | Ernst Haeckel |
| 3. | Charles Darwin | 4. | Lamarck |
Subtopic: Embryological Evidence of Evolution |
71%
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Match column I with column II with respect to human evolution and select the correct option:
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(i), c(iv), d(iii)
3. a(iii), b(i), c(iv), d(ii)
4. a(iv), b(iii), c(ii), d(i)
| Column-I | Column-II | ||
| a. | Australopithecines | (i) | Probably ate meat |
| b. | Homo erectus | (ii) | Walked like gorillas |
| c. | Neanderthal man | (iii) | Hunted with stone weapons but essentially ate fruits |
| d. | Ramapithecus | (iv) | (iv) Lived in near east and central Asia |
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(i), c(iv), d(iii)
3. a(iii), b(i), c(iv), d(ii)
4. a(iv), b(iii), c(ii), d(i)
Subtopic: Introduction to Human Evolution | Classification of Primates | Evolution of Homo Sapiens |
81%
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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)
(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%
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