Evolution is a change in the heritable characteristics of biological populations over successive generations. Different characteristics tend to exist within any given population as a result of mutation, genetic recombination, and other sources of genetic variation. The circumstances that determine whether a character should be common or rare within a population constantly change, resulting in the change in heritable characteristics arising over successive generations. It is this process of evolution that has given rise to biodiversity at every level of biological organization, including the levels of species, individual organisms, and molecules. Let's know more about Evolution.
1. In evolutionary terms, we have more in common with:
A. A Chinese school boy
B. A chimpanzee
C. A spider
D. A bacterium
2. The human species has genetic roots in...
3. Which of the following gas was not present in the early earth atmosphere?
C. Hydrogen sulphide
4. A gradual change, over a long period, in a form of life is known as...
5. Scientists believed that all life originated in:
A. The sea
B. The soil
C. The ground
D. The air
6. The theory of evolution of species by natural selection was given by:
7. The term ‘father of genetics’ is used for the scientist:
D. Marie curie
8. Which of the following statement is incorrect with respect to variation?
A. All variations in a species have equal chance of survival
B. Change in genetic composition results in variations
C. Selection of variation by environmental factors forms the basis of evolutionary
D. Variations are minimum in asexual reproduction
9. One of the following traits of the parents cannot be passed on to future generations. This trait is:
A. Cleft chin
B. Pointed chin
C. Screed chin
D. Broad chin
10. The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
A. Homologous organs
B. Excretory organs
C. Analogous organs
D. Reproductive organs
11. The fossil trilobite was originally...
A. An arthropod
B. An invertebrate
C. A reptile
D. An ave
12. The wings of a housefly and the wings of a sparrow are an example of...
A. Analogous organs
B. Vestigial organs
C. Respiratory organs
D. Homologous organs
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