Chapter 16, Problem 28A

Summary Introduction

Introduction : The remains or traces of ancient life which have been preserved over time by natural processes are known as fossils. Fossils are organized in the fossil record by estimating their ages and physical similarities.

Answer to Problem 28A

Correct answer :

The correct answer is option (a), H. ergaster

Explanation of Solution

Explanation/justification for the correct answer :

Option (a) The fossil record of Homo ergaster is believed to be 1.8-1.2 million years ago. They had an average brain capacity of

  $1000c{m}^3$ . It is known that, these had the thinner skull bones and had human like nose. They are the first African Homo species to migrate to Asia and Europe, in large numbers.

Explanation for incorrect answer :

Option (b) H. antecessor: It is a genus of species that had lived 1.2 million and 0.8 million years ago.

Option (c) H. neanderthalensis : These were evolved in Europe and Asia about 2,00,000 years ago from H. erectus .

Option (d) H. sapiens age 1,95,000 years ago to present. These moved to the areas that were inhabited by H. neanderthalensis about the same time.

Conclusion

Homo ergaster are the first Hominin species to migrate to Asia and Europe, in large numbers.