Tendrils in plants are an exapmle of
1. Convergent evolution
2. Radiation
3. Divergent evolution
4. Co-evolution
Basis of life are
1. | nucleic acids | 2. | proteins |
3. | nucleoproteins | 4. | amino acids |
Theory of 'Saltations' was given by
1. | G Mendel | 2. | Hugo de Vries |
3. | J B S Haldane | 4. | H J Miller |
The animal group which does not exist in Galapagos island is
1. | Insects | 2. | Protozoa |
3. | Crustacea | 4. | Amphibia |
Appearence of dark-coloured pepper moths among the light-coloured ones as a result of increased industrial pollution is an example of
1. | Disruptive selection |
2. | Stabilizing selection |
3. | Directional selection |
4. | None of the above |
Match the columns
Column I | Column II | ||
A | Hugo de Vries | 1 | Inheritance of acquired characters |
B | Julian Huxley | 2 | Multiplication of individual species in geographical proportion |
C | Jean Baptiste | 3 | Mutation theory of evolution |
A | B | C | |
1. | 1 | 2 | 3 |
2. | 2 | 3 | 1 |
3. | 3 | 1 | 2 |
4. | 3 | 2 | 1 |
Hardy-Weinberg's principle of 'zero evolution' is based on
1. | genetic equilibrium | 2. | random mating |
3. | no migrations | 4. | All of the above |
What does the term 'reproductive isolation' refers to?
1. | An individual is unable to fertilise itself |
2. | Genes are not exchanged between two populations |
3. | Individuals from two populations never mate |
4. | Individuals form two populations never produce offsprings |
Below are listed some pairs of characters. the homologous pair is
1. | forelimbs of dog and camel |
2. | insect wing and batwing |
3. | feathers of birds and fins of fish |
4. | lens of vertebrate and arthropod |
Pythons possess tiny leg bones that serve no purpose in locomotion. Such organs are
1. | homologous organs |
2. | analogous organs |
3. | vestigial organs |
4. | Both (a) and (c) |