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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%
Level 1: 80%+
Hints
Read the following statements and choose the correct option.
1. Both Statement A and Statement B are correct
2. Both Statement A and Statement 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 Statement A and Statement B are correct
2. Both Statement A and Statement 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 |
90%
Level 1: 80%+
Hints
Complete the analogy by choosing the correct option.
Vertebrate brains : Divergent evolution : : Eyes of the Octopus and of mammals : ________
1. Adaptive radiation
2. Homologous organs
3. Convergent evolution
4. Parallel evolution
Vertebrate brains : Divergent evolution : : Eyes of the Octopus and of mammals : ________
1. Adaptive radiation
2. Homologous organs
3. Convergent evolution
4. Parallel evolution
Subtopic: Concept of Organic Evolution: Evidence |
87%
Level 1: 80%+
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Natural selection can act on characters with quantitative variations and this can lead to the result depicted in the following graph.
The bold line shows the distribution of phenotypes in the population before selection and the broken line shows the effect of the selection. The changes in the phenotypic traits observed after selection represents
1. Directional selection
2. Stabilising selection
3. Balancing selection
4. Disruptive selection
The bold line shows the distribution of phenotypes in the population before selection and the broken line shows the effect of the selection. The changes in the phenotypic traits observed after selection represents
1. Directional selection
2. Stabilising selection
3. Balancing selection
4. Disruptive selection
Subtopic: Natural Selection |
82%
Level 1: 80%+
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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%
Level 1: 80%+
Hints
Embryological support for evolution is exemplified by
| 1. | Similarities in certain genes and proteins of chimpanzees and humans |
| 2. | Presence of gill slits in embryos of vertebrates |
| 3. | Similarity in the skull of baby chimpanzee and that of adult human skull |
| 4. | Darwin's finches in Galapagos islands |
Subtopic: Embryological Evidence of Evolution |
77%
Level 2: 60%+
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Hints
Please attempt this question first.
Match Column-I with Column-II and choose the correct option
1. a(iii), b(ii), c(i)
2. a(iii), b(i), c(ii)
3. a(i), b(ii), c(iii)
4. a(ii), b(iii), c(i)
| Column-I | Column-II | ||
| a. | Vertebrate hearts | (i) | Vestigial organs |
| b. | Eyes of the Octopus and of mammals | (ii) | Homologous organs |
| c. | Auricular muscles and 3rd molar teeth | (iii) | Analogous organs |
1. a(iii), b(ii), c(i)
2. a(iii), b(i), c(ii)
3. a(i), b(ii), c(iii)
4. a(ii), b(iii), c(i)
Subtopic: Embryological Evidence of Evolution |
89%
Level 1: 80%+
Hints
Complete the analogy and choose the correct option
Charles Darwin: Galapagos islands :: Alfred Wallace : _____________
1. Malay Archipelago
2. Australia
3. South America
4. North America
Charles Darwin: Galapagos islands :: Alfred Wallace : _____________
1. Malay Archipelago
2. Australia
3. South America
4. North America
Subtopic: Theory of Evolution & Lamarckism | Darwin's Theory |
87%
Level 1: 80%+
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Match column I and column II and choose the correct option:
1. a(iii), b(ii), c(i)
2. a(i), b(ii) , c(iii)
3. a(ii), b(iii), c(i)
4. a(iii), b(i), c(ii)
| Column I | Column II | ||
| a. | Dryopithecus | (i) | Arose during ice age |
| b. | Neanderthal man | (ii) | Lived between 1,00,000-40,000 years ago 1400 cc cranial capacity |
| c. | Homo sapiens | (iii) | Existed around 15 mya |
1. a(iii), b(ii), c(i)
2. a(i), b(ii) , c(iii)
3. a(ii), b(iii), c(i)
4. a(iii), b(i), c(ii)
Subtopic: Evolution Prior to Ape Man |
85%
Level 1: 80%+
Hints
In a large population which is in Hardy-Weinberg equilibrium, the percentage of the homozygous recessive genotype is 36%. What would be the frequency of heterozygotes?
1. 0.36
2. 0.6
3. 0.48
4. 0.16
1. 0.36
2. 0.6
3. 0.48
4. 0.16
Subtopic: Hardy Weinberg Law |
79%
Level 2: 60%+
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