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Q. No.How many statements given below are incorrect?
(a) The first mammals were like Macaca.
(b) Due to continental drift, North American animals were overridden by south American fauna.
(c) Pouched mammals of Australia survived because of lack of competition from metatherians.
(d) Seals and sea cows are terrestrial mammals.
1. Zero
2. Four
3. Three
4. Two
Subtopic: Concept of Organic Evolution: Evidence |
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| Assertion (A): | In terms of determination, evolution is a directed process |
| Reason (R): | Nature selects those variants which are able to reproduce better and leave more progeny in the changed environmental conditions |
Choose the correct answer from the options given below
| 1. | (A) is true but (R) is false |
| 2. | (A) is false but (R) is true |
| 3. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
| 4. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
Subtopic: Darwin's Theory |
59%
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Read the following statements (a-c) with respect to gene flow and choose the correct option
1. (a) and (b) are correct
2. (b) and (c) are correct
3. (a) and (c) are correct
4. Only (c) is correct
| a: | Gene flow occurs through migration of individuals |
| b: | Does not affect allele frequencies in the original population |
| c: | Gene flow changes allele frequencies in the new population |
2. (b) and (c) are correct
3. (a) and (c) are correct
4. Only (c) is correct
Subtopic: Hardy Weinberg Law |
80%
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Match the scientists listed in column-I with their ideas listed in column-II and select the correct option
1. a(iii), b(ii), c(i), d(iv)
2. a(i), b(ii), c(iii), d(iv)
3. a(ii), b(iii), c(i), d(iv)
4. a(iii), b(ii), c(iv), d(i)
| Column-I | Column-II | ||
| a. | Lamarck | (i) | Origin of life preceded by chemical evolution |
| b. | Darwin | (ii) | Reproductive fitness |
| c. | Haldane | (iii) | Inheritance of acquired characters |
| d. | Malthus | (iv) | Populations are stable in size except for the seasonal fluctuations |
1. a(iii), b(ii), c(i), d(iv)
2. a(i), b(ii), c(iii), d(iv)
3. a(ii), b(iii), c(i), d(iv)
4. a(iii), b(ii), c(iv), d(i)
Subtopic: Examples of Chemical Evolution | Other Theories of Origin of Life | Theory of Evolution & Lamarckism | Darwin's Theory | Modern Theory of Evolution |
87%
From NCERT
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Match column-I with column-II and choose the correct option
1. a(ii), b(iii), c(iv), d(i)
2. a(iii), b(ii), c(i), d(iv)
3. a(i), b(iii) , c(ii), d(iv)
4. a(i), b(ii), c(iii), d(iv)
| Column-I | Column-II | ||
| a. | Stegosaurus | (i) | Extinct flying reptiles |
| b. | Brachiosaurus | (ii) | Herbivorous dinosaur with plates along its back |
| c. | Tyrannosaurus | (iii) | Herbivorous dinosaur with long neck, long tail, small head relative to body |
| d. | Pteranodon | (iv) | Carnivorous dinosaur, about 20 feet in height |
1. a(ii), b(iii), c(iv), d(i)
2. a(iii), b(ii), c(i), d(iv)
3. a(i), b(iii) , c(ii), d(iv)
4. a(i), b(ii), c(iii), d(iv)
Subtopic: Concept of Speciation |
88%
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Read the following statements with respect to evolutionary history of vertebrates
(a) Thecodonts are extinct common ancestor of crocodiles, birds and mammals
(b) Lizards are more closely related to tuataras than turtles
(c) Sauropsids are common ancestors of present day reptiles and birds
(d) Pelycosaurs and therapsids are evolved from synapsids
Choose the correct option
1. (a) and (b) are correct
2. (a) and (c) are correct
3. (b), (c) and (d) are correct
4. (a) and (d) are correct
(a) Thecodonts are extinct common ancestor of crocodiles, birds and mammals
(b) Lizards are more closely related to tuataras than turtles
(c) Sauropsids are common ancestors of present day reptiles and birds
(d) Pelycosaurs and therapsids are evolved from synapsids
Choose the correct option
1. (a) and (b) are correct
2. (a) and (c) are correct
3. (b), (c) and (d) are correct
4. (a) and (d) are correct
Subtopic: Concept of Speciation |
68%
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Match column I with column II and choose the correct option
1. a(iii), b(ii), c(i)
2. a(iii), b(i), c(ii)
3. a(i), b(ii), c(iii)
4. a(ii), b(iii), c(i)
| Column I | Column II | ||
| a. | Vertebrate hearts | (i) | Vestigial organs |
| b. | Eyes of the Octopus and of mammals | (ii) | Homologous organs |
| c. | Auricular muscles and 3rd molar teeth | (iii) | Analogous organs |
1. a(iii), b(ii), c(i)
2. a(iii), b(i), c(ii)
3. a(i), b(ii), c(iii)
4. a(ii), b(iii), c(i)
Subtopic: Embryological Evidence of Evolution |
92%
From NCERT
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Match column-I with column-II and choose the correct option
1. (a)-(iii), (b)-(i), (c)-(ii)
2. (a)-(i), (b)-(iii), (c)-(ii)
3. (a)-(i), (b)-(iii), (c)-(iv)
4. (a)-(iii), (b)-(i), (c)-(iv)
| Column I | Column II | ||
| (a) | Oparin and Haldane | (i) | Chemical evolution theory |
| (b) | Darwin | (ii) | Cosmozoic theory |
| (c) | Early Greek thinkers | (iii) | 'Origin of species' book |
| (iv) | Spontaneous generation theory |
1. (a)-(iii), (b)-(i), (c)-(ii)
2. (a)-(i), (b)-(iii), (c)-(ii)
3. (a)-(i), (b)-(iii), (c)-(iv)
4. (a)-(iii), (b)-(i), (c)-(iv)
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
60%
From NCERT
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Read the following statements and choose the option which correctly states each statement as true (T) or false (F).
(a) In experiments similar to Miler's experiment scientists observed the formation of sugars, nitrogen bases, pigment, and fats.
(b) Life appeared 500 million years after the formation of the universe.
(c) Evolutionary biology is the study of the history of life forms on earth.
(a) In experiments similar to Miler's experiment scientists observed the formation of sugars, nitrogen bases, pigment, and fats.
(b) Life appeared 500 million years after the formation of the universe.
(c) Evolutionary biology is the study of the history of life forms on earth.
| (a) | (b) | (c) | |
| 1. | F | F | T |
| 2. | F | T | T |
| 3. | T | F | T |
| 4. | T | T | T |
Subtopic: Other Theories of Origin of Life | A BRIEF ACCOUNT OF EVOLUTION |
52%
From NCERT
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Read the following statements and choose the correct option
1. (a) and (b) are correct
2. (b) and (c) are correct
3. (a) and (c) are correct
4. (a), (b) and (c) are correct
| (a) | Geological history of earth closely correlates with biological history of earth |
| (b) | Non-cellular forms of life possibly originated around 3 million years ago |
| (c) | First life forms originated in sea water |
1. (a) and (b) are correct
2. (b) and (c) are correct
3. (a) and (c) are correct
4. (a), (b) and (c) are correct
Subtopic: Other Theories of Origin of Life |
54%
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