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Q. No.Which of the following are incorrect about natural selection?
A.
It is a process in which individuals with certain heritable traits survive and reproduce at a higher rate than do other individuals
B.
It is a process that occurs through interactions between individuals and their enviornment resulting in the evolution of individuals
C.
It is a process that can over time, increase the frequency of favourable adaptations in a given enviornment
D.
It is a process that disropts the adaptation of individuals to a new environment
E.
Natural selection may lead to speciation
Choose the correct answer from the options given below
1. A and B only
2. B and D only
3. D and E only
4. C and E only
Subtopic: Darwin's Theory |
From NCERT
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Terrestrial life evolved from aquatic life due to
1. Development of extra-embryonic membranes
2. Development of glandular skin
3. Modification of appendages into limbs
4, High body temperature
1. Development of extra-embryonic membranes
2. Development of glandular skin
3. Modification of appendages into limbs
4, High body temperature
Subtopic: Origin of Life |
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Given below are two statements
In light of the above statements, choose the most appropriate answer from the options given below
| Statement I : | When the two species are morphologically almost identical but do not normally interbreed, such species are sibling species. |
| Statement II: | A sub population becomes reproductively isolated in the midst of its parent population. This is allopatric speciation. |
| 1. | Both the 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 |
Subtopic: Concept of Speciation |
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Match List I with List II
Choose the correct answer from the options given below:
1. A-IV B -III C-I D-II
2. A-III B-IV C-II D-I
3. A-II B-III C-I D-IV
4. A-III B-IV C-I D-II
| List I | List II |
| A. Devonian period | I. First vertebrate and marine algae abundant |
| B. Pliocene period | II. Gymnosperms continue as dominant plants & first birds |
| C. Ordovician period | III. Diversification of bony fishes & first amphibian dominant |
| D. Jurassic period | IV. Ape like ancestors of human appear |
Choose the correct answer from the options given below:
1. A-IV B -III C-I D-II
2. A-III B-IV C-II D-I
3. A-II B-III C-I D-IV
4. A-III B-IV C-I D-II
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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The brain capacities of Homo habilis is
1. Between 1200 - 1300 cc
2. 1400 cc
3. 650 - 880 cc
4. Between 1300 - 1350 cc
1. Between 1200 - 1300 cc
2. 1400 cc
3. 650 - 880 cc
4. Between 1300 - 1350 cc
Subtopic: Evolution of Homo Sapiens |
93%
From NCERT
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In 1953, S.L. Miller in his experiment created electric discharge in closed flask containing CH4, H2, NH3 and water vapour at
1. 750ºC
2. 800ºC
3. 850ºC
4. 700ºC
1. 750ºC
2. 800ºC
3. 850ºC
4. 700ºC
Subtopic: Urey & Miller Experiment |
94%
From NCERT
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
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.
| 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.
Subtopic: Concept of Organic Evolution: Evidence |
83%
From NCERT
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Both statement I and statement II are correct
2. Both statement I and statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but statement II is correct
| Statement I: | Mutations are random and direction less, while Darwinian variations are small and directional. |
| Statement II: | Darwin's finches represent one of the best examples of adaptive radiation. |
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Both statement I and statement II are correct
2. Both statement I and statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but statement II is correct
Subtopic: Darwin's Theory | Hugo De Vries Theory of Evolution |
92%
From NCERT
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Match List I with List II:
Choose the correct answer from the options given below:
1. A-(I), B-(II), C-(III), D-(IV)
2. A-(IV), B-(III), C-(I), D-(II)
3. A-(III), B-(I), C-(IV), D-(II)
4. A-(III), B-(I), C-(II), D-(IV)
| List I | List II |
| A. Homologous | I. Convergent evolution |
| B. Paralogous | II. Speciation |
| C. Analogous | III. Gene duplication |
| D. Orthologous | IV. Divergent evolution |
1. A-(I), B-(II), C-(III), D-(IV)
2. A-(IV), B-(III), C-(I), D-(II)
3. A-(III), B-(I), C-(IV), D-(II)
4. A-(III), B-(I), C-(II), D-(IV)
Subtopic: Embryological Evidence of Evolution | Palentological Evidences of Evolution |
95%
From NCERT
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The eye of Octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of
| 1. | homologous organs that have evolved due to divergent evolution |
| 2. | analogous organs that have evolved due to convergent evolution |
| 3. | analogous organs that have evolved due to divergent evolution |
| 4. | homologous organs that have evolved due to convergent evolution |
Subtopic: Concept of Organic Evolution: Evidence |
90%
From NCERT
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