Q. No.Which of the following organisms are subject to natural selection?
a. prokaryotes that reproduce asexually
b. single-celled eukaryotes that reproduce sexually
c. organisms living in a changing environment
d. organisms living in a stable environment
1. a and b only
2. b and c only
3. c and d only
4. a, b, c and d
The increase in the frequency of one phenotype in a wild population of fish could be due to:
a. an advantageous mutation.
b. increased reproductive success of individuals with that phenotype.
c. a change in the environment.
1. c only
2. a and b only
3. a, b and c
4. b and c only
Which of the following can be random processes?
1 genetic drift
2 mutations
3 artificial selection
1. 2 and 3 only
2. 1, 2 and 3
3. 1 and 2 only
4. none of them
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
Which of the following refers to correct example(s) of organisms that have evolved due to changes in environment brought about by anthropogenic action?
(a) Darwin's Finches of Galapagos islands
(b) Herbicide-resistant weeds
(c) Drug-resistant eukaryotes
(d) Man-created breeds of domesticated animals like dogs
1. (a) and (c)
2. (b), (c) and (d)
3. only (d)
4. only (a)
Match the hominids with their correct brain size:
| Column I | Column II | ||
| (a) | Homo habilis | (i) | 900 cc |
| (b) | Homo neanderthalensis | (ii) | 1350 cc |
| (c) | Homo erectus | (iii) | 650-800 cc |
| (d) | Homo sapiens | (iv) | 1400 cc |
Select the correct option.
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iv) | (i) | (iv) | (ii) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (iii) | (iv) | (i) | (ii) |
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 |
A. Population of dark colored moth will increase
B. Population of both the forms will decrease
C. Population of light colored moth will increase
D. Population of dark colored moth will increase while the population of light colored moth will decrease
E. Population of both the forms will increase
Choose the correct answer from the options given below:
1. A and D only
2. C, D, and E only
3. C and D only
4. B, C, and D only
A. Population is constantly evolving
B. Genetic drift is negligible
C. Allele frequencies after one round of random mating change from the original frequencies
D. Hardy-Weinberg principle is a fundamental null model for population genetics
E. Allele frequencies change from generation to generation
Choose the correct answer from the option given below :
1. B and C only
2. C and D only
3. A and B only
4. D and B only
| Statement I: | In England, during the Industrial Revolution, the black-colored form of Biston Betularia became dominant over the light-colored form of moth because of natural selection, the darker forms were selected. |
| Statement II: | Prior to the Industrial Revolution, the peppered moths exhibited protective mimicry and the light-colored moths were not noticed by predatory birds due to light-colored lichens on the bark of trees. |
1. Both statement I and statement II are true.
2. Both statement I and statement II are false.
3. Statement I is correct but statement II is false.
4. Statement I is incorrect but statement II is true.
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