Evolution

Q.

Which of the following is not an example of the vestigial organ in humans?

1. The phalanges of horse
2. Human body hair
3. Vermiform appendix
4. Movement of pinna

Q.

Darwin's longest tour in the ___ and his observations in this area helped him arrive at his theory of "Natural selection".

1. Galapagos Islands

2. East Asia

3. Victoria Island

4. Beagle

Q.

Diversification of plant life appeared due to:

1. Sudden change on earth

2. Natural calamities

3. Abrubt mutation

4. A gradual but continuous evolution

Q.

___ is the unit of evolution.

Q.

The major idea portrayed in Darwin's book "The origin of species" was that

1. Disproved Lamarck's theory

2. Species change over time depending on natural conditions

3. Continuous variation has no relationship with environmental changes

4. All organisms live in social colonies

Q.

___ era was the golden age of Dinosaurs/age of reptiles.

Q.

Assertion [A]: Evolution is a continuous process that takes millions of years for speciation.
Reason [R]: During evolution only mutation leads to speciation.

1. Both assertion and reason are correct

2. Both assertion and reason are incorrect

3. Assertion is correct but reason is wrong

4. Assertion is correct and reason explains the assertion

Q. Which is the most important factor for continuity of a species from evolutionary point of view?

1. Replication of genetic material

2. Formation of gametes

3. Synthesis of proteins

4. None of these.

Q.

Which one of the following animals was identified as a missing link in the chain of evolution?

1. Eohippus

2. Archaeopteryx

3. Galapagos finch

4. Tyrannosaurus

Q. Evolution is a gradual change that develops a species into a

1. All the above
2. Different form
3. Better form
4. Complex Form