Struggle against force of nature is/are…
a) intra specific struggle or rivals
b) inter specific struggle
c) extra specific or environmental
struggle
d) all of these
Explanation: It is also called extra specific struggle. It is the struggle between the individuals and natural forces like earth quakes, volcanic eruptions, severe winter, serve cold etc.
According to Darwin, variation is heritable and is of …….kinds.
a) two
b) three
c) four
d) six
Explanation: 1. Useful variations and 2. Harmful variations
Those individuals survive which possess advantageous variation over the unfortunate counterparts, the unfit perish; Darwin called it...
a) fixity of species
b) special creation
c) natural selection
d) struggle for existence
Explanation: Herbert Spencer used the term “survival of fittest
Neo Darwinism:
Neo Darwinism is a modified theory of Darwinism explaining the origin of species on a genetic basis, hence the main driving force of Neo Darwinism is genetic variation.
Which of the following fields have enabled the scientists to identify mutation, genetic drift and gene flow as other natural forces of evolutionary change?
a) genetics
b) biochemistry and ecology
c) paleontology
d) all of these
The pioneering work of ……and many other led to what become known as the modern synthesis.
a) Cheverikov
b) Mayr
c) Simpson
d) all of these
