Given below is the representative evolutionary history of vertebrates through geological periods. A, B, C, and D, respectively, are:
1. | Dinosaurs, Thecodonts, Therapsids, and Pelycousurs |
2. | Dinosaurs, Therapsids, Thecodonts, and Pelycosaurs |
3. | Pelycosaurs, Therapsids, Thecodonts, and Dinosaurs |
4. | Theraosids, Dinosaurs, Pelycosaurs, and Thecodonts |
In the apparatus of the Urey and Miller experiment, the gases [G] contained in the flask are:
1. | Methane, Carbon dioxide, Ammonia, and Water vapour |
2. | Methane, Hydrogen cyanide, Ammonia, and Water vapour |
3. | Methane, Ammonia, Hydrogen, and Water vapour |
4. | Carbon dioxide, Oxygen, Hydrogen, and Ammonia |
All the following are examples of analogous organs except:
1. | Thorn and tendrils of Bougainvillea and Cucurbita |
2. | Sweet potato and Potato |
3. | Flippers of Penguins and Dolphins |
4. | Eye of the Octopus and of Mammals |
Identify the correct statement amongst the following:
1. | Monocots evolved later than dicots. |
2. | Mammals evolved from extinct reptiles called thecodonts. |
3. | Dryopithecus was more man-like while Ramapithecus was more ape-like. |
4. | Homo erectus had a cranial capacity of about 800 cc and probably ate meat. |
Consider the following statements:
I: | The first organisms that invaded land were the plants. |
II: | Lobefins evolved into the first amphibians. |
III: | Ramapithecus was more ape-like and Dryopithecus was more man-like. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
Consider the following statements:
I: | The thorns and tendrils of Bougainvillea and Cucurbita represent homology. |
II: | Sweet potato and potato exhibit analogy. |
III: | Homologous organs are the result of divergent evolution & analogous organs are the result of convergent evolution. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
Consider the following statements:
I: | Nature selects for fitness. |
II: | Fitness is based on characteristics that are inherited. |
III: | Fitness is the end result of the ability to adapt and get selected by nature. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
Some of the marsupials of Australia resemble equivalent placental mammals that live in similar habitats on other continents. This is an example of:
1. | Convergent evolution | 2. | Divergent evolution |
3. | Saltatory evolution | 4. | Adaptive radiation |
Which of the following is the most important precondition for speciation to occur?
1. | Reproductive isolation | 2. | A crash of the population size |
3. | Adaptive radiation | 4. | Random mating |
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I |
Column II |
I. Sickle cell anemia II. Polyploidy III. Darwin finches IV. Tail in humans |
1. Sympatric speciation 2. Balancing selection 3. Adaptive radiation 4. Atavism |
Codes:
I | II | III | IV | |
1. | 1 | 2 | 3 | 4 |
2. | 2 | 1 | 4 | 3 |
3. | 2 | 1 | 3 | 4 |
4. | 1 | 2 | 4 | 3 |