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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%
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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 |
From NCERT
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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%
From NCERT
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Match column-I with column-II and choose the correct option:
1. a(iii), b(i), c(iv), d(ii)
2. a(i), b(ii), c(iii), d(iv)
3. a(i), b(iii), c(ii), d(iv)
4. a(ii), b(iv), c(iii), d(i)
| Column-I | Column II | ||
| a. | Lobe-finned fishes | (i) | Amniotes and lay thick-shelled eggs |
| b. | Tyrannosaurus rex | (ii) | Evolved into the first amphibians |
| c. | Dinosaurs | (iii) | Disappeared about 65 mya |
| d. | Reptiles | (iv) | Carnivorous, 20 feet in height |
1. a(iii), b(i), c(iv), d(ii)
2. a(i), b(ii), c(iii), d(iv)
3. a(i), b(iii), c(ii), d(iv)
4. a(ii), b(iv), c(iii), d(i)
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
89%
From NCERT
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How many statements given below are incorrect?
1. Zero
2. Four
3. Three
4. Two
| (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 |
61%
From NCERT
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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 |
81%
From NCERT
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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 |
88%
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
Choose the correct option
| (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 |
72%
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