- 1(current)
Q. No.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: Â 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: Â Concept of Speciation |
 68%
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Assertion(A): Continental drift caused survival of pouched mammals of Australia.
Reason(R): It was due to lack of competition from any other mammal.
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. Both (A) and (R) are false.
Reason(R): It was due to lack of competition from any other mammal.
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. Both (A) and (R) are false.
Subtopic: Â Definition & Types of Evolution |Â Concept of Speciation |
 87%
From NCERT
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Assertion (A): In polluted environments, melanic moths were more selected by nature.
Reason (R): Melanic moths were able to camouflage themselves during industrialization.
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): Melanic moths were able to camouflage themselves during industrialization.
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: Â Concept of Isolation |Â Concept of Speciation |Â Genetic Basis of Adaptation |
 88%
From NCERT
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Assertion (A): The resistant organisms/cells appear over a time scale of centuries.
Reason (R): Excess use of antibiotics has resulted in the selection of resistant varieties.
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): Excess use of antibiotics has resulted in the selection of resistant varieties.
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: Â Natural Selection |Â Concept of Speciation |Â Genetic Basis of Adaptation |
From NCERT
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Assertion (A): There must be a genetic basis for getting selected and evolving.
Reason (R): Adaptive ability is inherited.
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): Adaptive ability is inherited.
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: Â Concept of Speciation |Â Genetic Basis of Adaptation |
 59%
From NCERT
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Q. No.
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