Karn & Penrose showed that birth weight follows a normal distribution, that mortality for newborns is greater for those either under- or over-weight, and that the mean birth weight (7 lbs) coincides with that showing minimum mortality. The type of natural selection operating here is shown by the graph:
1. (a)
2. (b)
3. (c)
4. Both (a) and (b)
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 |
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. |
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 |
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: | 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 |
Distantly related organisms with similar traits have experienced:
1. Coevolution
2. Convergent evolution
3. Divergent evolution
4. Parallel evolution
Theory of spontaneous generation of life was conclusively disproved by:
1. Francesco Redi
2. Oparin and Haldane
3. Louis Pasteur
4. Eldredge and Gould
Which of the following is not a result of convergent evolution?
1. Potato and sweet potato
2. Flippers of penguins and dolphins
3. Eye of octopus and a mammal
4. Thorn and tendril of Bougainvillea
Identify the incorrectly matched pair:
1. Ramapithecus More man like ape like
2. Homo habilis First human like being, the hominid
3. Homo erectus Probably did not eat meat
4. Neanderthal Buried their dead