Evolution

Darwin's finches are a good example of –

1. Convergent evolution
2. Adaptive radiation
3. Connecting link
4. Industrial melanism

Which one of the following scientist's name is correctly matched with the theory put forth by him?

1. Mendel — Theory of pangenesis
2. de Vries — Natural selection
3. Pasteur — Inheritance of acquired characters
4. Weismann — Theory of continuity of germplasm

Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?

1. They could separate combinations of molecules from the surroundings
2. They were able to reproduce
3. They were partially isolated from the surroundings
4. They could maintain an internal environment

Thorn of Bougainvillea and tendril of Cucurbita are examples of:

1. analogous organs
2. homologous organs
3. vestigial organs
4. retrogressive evolution

The concept of chemical evolution is based on-

1. Crystallization of chemicals
2. Effect of solar radiation on chemicals
3. Possible origin of life by combination of chemicals under suitable environmental conditions
4. Interaction of water, air and clay under intense heat

The finches of Galapagos islands provide an evidence in favour of-

1. Special Creation
2. Biogeographical Evolution
3. Evolution due to Mutation
4. Retrogressive Evolution

When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:-

1. Microevolution
2. Convergent evolution
3. Co-evolution
4. Divergent evolution

Adaptive radiation refers to:-

1. Adaptations due to Geographical isolation
2. Migration of members of a species to different geographical areas
3. Evolution of different species from a common ancestor
4. Power of adaptation in an individual to a variety of environments

If the mean and the median pertaining to a certain character of a population are of the same value, the following is most likely to occur:-

1. A normal distribution
2. A T-shaped curve
3. A skewed curve
4. A bi-modal distribution

Which one of the following statements is correct?

1. Ontogeny repeats phylogeny.
2. There is no evidence of the existence of gills during embryogenesis of mammals.
3. Stem cells are specialized cells.
4. All plant and animal cells are totipotent.