Which of the following subdivisions deals with fossils
Ecology
Ornithology
Ethology
Palaeontology
The sequence of origin of life could be
Mutation introduces new genes into a species and brings about the changes in
The finch species of Galapagos islands are grouped according to their food sources. Which of the following is not a finch food ?
Assertion : The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason :The first autotrophic organisms were the chemoautotrophs that never released oxygen.