Chapter 14, Problem 1TQ

Summary Introduction

Speciation makes the population distinct each other by forming species. Naturally, four different species like allopatric, sympatric, parapatric and peripatric. Speciation plays a vital role in evolution and taking the population to the next level of transformation.

Answer to Problem 1TQ

Organisms transforms and adapt to a new life style will led to formation of new species by speciation process.

Therefore, option (a) is correct.

Explanation of Solution

Justify reasons for the correct statement:

Speciation is the case when a group of organisms forms a new species and higher taxonomic groups. The term speciation was coined by Orator F.Cook. They expand their ecological roles. It is a simple process through which a group of organism evolves and becomes a distinct species.

Option (a) is given as “speciation.”

Hence, option (a) is correct.

Justify reasons for the incorrect statements:

Option (b) is given as “mass extinction.”

Mass extinction is a process of complete destruction of a population either naturally or artificially. Mass extinction will not result in speciation. Hence, it is a wrong answer.

Option (c) is given as “evolution”.

Evolution is a natural process of organism gradually transforms, taking place in a species that leads to their development and not a new species formation. Hence, it is a wrong answer.

Option (d) is given as “adaptive radiation”.

Adaptive radiation deals with the diversification of an ancestral species into multiple new forms. Adaptive radiation will not form new species and higher taxonomic groups. Hence, it is a wrong answer.

Hence, options (b), (c) and (d) are incorrect.

Conclusion

Speciation is a process of population transforms to different species with morphological and changes like adaptation.