Q. No.The best description of natural selection is
1. the survival of the fittest
2. the struggle for existence
3. the reproductive success of the members of a
population best adapted to the environment
4. a change in the proportion of variations within
a population
Natural selection is the survival of fittest, which of the
following most precisely describe the survival of fittest?
1. The physical strength of organism.
2. How many fertile offspring is produced by an
organism.
3. Capability to tolerate environmental extremities.
4. How long they survive.
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?
| 1. | Overproduction, variations, constancy of population size, natural selection |
| 2. | Variations, constancy of population size, overproduction, natural selection |
| 3. | Overproduction, constancy of population size, variations, natural selection |
| 4. | Variations, natural selection, overproduction, constancy of population size |
The finches of the Galapagos islands provide evidence in favour of:
1. special creation
2. evolution due to mutation
3. retrogressive evolution
4. biogeographical evolution
In Galapagos island, Darwin found different varieties of finches, originated from a common ancestor. The original variety of these finches was:-
1. Insectivorous
2. Vegetarian
3. Seed-eating
4. Cactus eating
Match List-I with List-II:
| List-I | List-II | ||
| (a) | Adaptive radiation | (i) | Selection of resistant varieties due to excessive use of herbicides and pesticides |
| (b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
| (c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
| (d) | Evolution by anthropogenic action | (iv) | Darwin Finches |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (i) | (iv) | (iii) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (ii) | (i) | (iv) |
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 |
Select the correct statement from the following:
| 1. | Darwin variations are small and directionless |
| 2. | fitness is the end result of the ability to adapt and gets selected by nature |
| 3. | all mammals except whales and have seven cervical vertebrae |
| 4. | Mutations are random and directional |
The rate of appearance of new forms is linked with:
1. Mutation
2. Life span
3. Use and disuse
4. Genetic drift
Mark the incorrect statement?
1. Force of natural selection started with cellular form of life
2. According to natural selection rate of appearance of new forms is linked to life cycle or the life span
3. According to natural selection theory of fitness is based on characteristic which are inherited
4. Natural selection produces new genetic variability in a population.
© 2024 GoodEd Technologies Pvt. Ltd.