Q. No.In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as:
1.
Adaptive Radiation
2.
Divergent Evolution
3.
Cyclical Evolution
4.
Convergent Evolution
A population of a species invades a new area. Which of the following condition will lead to adaptive radiation?
| 1. | Area with a large number of habitats having very low food supply |
| 2. | Area with a single type of vacant habitat |
| 3. | Area with many types of vacant habitats |
| 4. | Area with many habitats occupied by a large number of species |
Which of the following statements is correct about the origin and evolution of men?
| 1. | Agriculture came around 50,000 years back. |
| 2. | The Dryopithecus and Ramapithecus primates existing 15 million years ago, walked like men. |
| 3. | Homo habilis probably ate meat. |
| 4. | Neanderthal men lived in Asia between 100000 and 40000 years back. |
What decides the frequency of an allele in a population?
| 1. | Dominance |
| 2. | Its location on a particular chromosome |
| 3. | Its degree of expression |
| 4. | Natural selection |
A person with sickle cell anemia is:
| 1. | more prone to malaria. | 2. | more prone to typhoid. |
| 3. | less prone to malaria. | 4. | less prone to typhoid. |
According to Darwin, the organic evolution is due to
(1) Interspecific competition
(2) Competition within closely related species
(3) Reduced feeding efficiency in one species due to the presence of interfering species
(4) Intraspecific competition
According to Darwin, the organic evolution is due to
(1) Interspecific competition
(2) Competition within closely related species
(3) Reduced feeding efficiency in one species due to the presence of interfering species
(4) Intraspecific competition
What decides the frequency of an allele in a
population?
1. Dominance
2. Its location on a particular chromosome
3. Its degree of expression
4. Natural selection
Which of the following pairs of organs do not represent analogous organs?
1. Eye of an octopus and eye of a mammal
2. Flippers of penguin and flippers of dolphin
3. Wings of bat and forelimbs of humans
4. Wings of birds and wings of butterfly
Both Charles Darwin and A.R.Wallace were influenced by the:
1. writings of J.B.S.Haldane on the origin of life
2. findings of Urey and Miller experiments
3. findings on the Galapagos Islands
4. essay on human population by T.R.Malthus
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