Question

Reasons for origin of new species include

• A. Mutation
• B. Continental drift
• C. Natural calamities
• D. All of the above

Answer 1

Answer: (D)

All of the above

• There are different reasons for the origin of s=new species from older ones.
• One of these reasons is the development of random and sudden mutations. Mutations are nothing but changes that occur in DNA sequences. Certain environmental factors cause mutations. Thus, change in DNA sequence leads to the generation of a species with some altered character.
• Continental drift describes the relative change in geographical locations of the continents. This theory was first established by Abraham Ortelius saying that there must have been drift in the location of continents. This theory also explains the reason behind similar-looking animals on different continents.
• Natural calamities like earthquakes, tornadoes, volcanoes, hurricanes, etc cause large scale destruction of life and biodiversity. They also lead to the development of some characters in living organisms that are altered or modified forms of their original character.
• So, they too lead to change inn current species character and form new species.
• So, all the given options are correct.