Question

Read the following four (I-IV) statements:
I. The cranial capacity of Homo habilis was 650-800c.c
II. The cranial capacity of Homo erectus was about 900c.c
III. Around two mya Australopithecus probably lived in East African grasslands
IV. During the ice age, Homo sapiens arose
How many of the above statements are not incorrect:
A. Four
B. Three
C. Two
D. One

Answer 1

Hint: Most of the species of Australopithecus have been proposed as an ancestor and Homo are considered to have been evolved from the Australopithecus. Moreover, the brain has shown continuous expansion throughout the evolution of humans. The evolution took place from Homo habilis to Homo erectus and finally the Homo sapiens arose.

Complete answer:
(a) Homo habilis is the primary organism resembling humans. A brain size of 650−800cc cranial capacity is the characteristic of Homo habilis.
(b) Homo erectus species showed their existence around 1.5 million years ago. They were having a cranial capacity of 900cc.
(c) Prof Raymond Dart discovered the early fossil in Africa and he named the species as Australopithecus africanus. They were having both ape like- and human like- features. Australopithecus are considered to have inhabited East African grasslands.
(d) Homo sapiens arose during the ice age that is approximately 75000−10000 years ago.

So, the correct answer is option “A” that is all of the 4 statements mentioned above are correct.

Note:
Human cell lines showed increase in the size which occurred at a face pace during the transition period in between the species. The size of the brain increased rapidly in the species, named Homo sapiens and Homo erectus. The evolution of species occurred as a result of challenges that were faced by the primary humans pertaining to changes in the environmental conditions. This led to the evolution of species with bigger sizes which ultimately evolved with larger brains which were further more complex as compared to the brains of early humans.