Q. No.Which of the following could be the outcome of evolution?
| a. | speciation |
| b. | a change in allele frequency |
| c. | increased biodiversity |
| 1. | b and c only | 2. | a only |
| 3. | a and c only | 4. | a, b and c |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 86%
Level 1: 80%+
Hints
Match the scientists listed under column I with ideas listed column II.
|
Column l |
Column ll |
||
|
A. |
Darwin |
1 |
abiogenesis |
|
B. |
Oparin |
2 |
use and disuse of organs |
|
C. |
Lamarck |
3 |
continental drift theory |
|
D. |
Wagner |
4 |
evolution by natural selection |
Codes
| Options: | A | B | C | D |
| 1. | 1 | 4 | 2 | 3 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 2 | 4 | 3 | 1 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 84%
Level 1: 80%+
Hints
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: Â Examples of Chemical Evolution |Â Urey & Miller Experiment |Â Other Theories of Origin of Life |Â Theory of Evolution & Lamarckism |Â A BRIEF ACCOUNT OF EVOLUTION |
 92%
Level 1: 80%+
Hints
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: Â A BRIEF ACCOUNT OF EVOLUTION |
Level 4: Below 35%
Hints
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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: Â A BRIEF ACCOUNT OF EVOLUTION |
Level 3: 35%-60%
Hints
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: Â A BRIEF ACCOUNT OF EVOLUTION |
 89%
Level 1: 80%+
Hints
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: Â A BRIEF ACCOUNT OF EVOLUTION |
 64%
Level 2: 60%+
Hints
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: Â Other Theories of Origin of Life |Â A BRIEF ACCOUNT OF EVOLUTION |
 55%
Level 3: 35%-60%
Hints
Read the following statements A and B with respect to evolution. Select the correct option.
| Statement A: | Evolution is not a directed process in the sense of determination. |
| Statement B: | It is a stochastic process based on chance events in nature and chance mutation in organisms. |
| 1. | Both statements A and B are incorrect. |
| 2. | Both statements A and B are correct. |
| 3. | Only statement A is incorrect. |
| 4. | Only statement B is incorrect. |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 89%
Level 1: 80%+
Hints
| Assertion(A): | The earliest organisms that appeared on earth were non-green and presumably anaerobes. |
| Reason(R): | The first autotrophic organisms were the chemoautotrophs that never released oxygen. |
| 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 Other Theories of Origin of Life |Â A BRIEF ACCOUNT OF EVOLUTION |
 64%
Level 2: 60%+
Hints
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