Answer the following:
(a) Mention any two contrasting characters between the two stages.
Solution:-
The two stages are,
Stage A is Australopithecus
Stage B is Homo sapiens sapiens
| Australopithecus | Homo sapiens sapiens |
| 1. Cranial capacity is 450 cm3 to 600 cm3. | Cranial capacity is 1450 cm3 to 1600 cm3. |
| 2. Low forehead, eye brow ridges projecting over the eyes. | 2. Steep forehead, reduced brow ridges, flattened face. |
(b) Write all the stages of human evolution in their correct sequence.
Solution:-
(1) Australopithecus
(2) Homo habilis
(3) Homo erectus
(4) Neanderthals
(5) Cro-Magnon
(6) Homo sapiens sapiens (modern man)
(c) State any two characteristic features of stage B.
Solution:-
1. Bipedal locomotion, with four reversed curves in the spine.
2. Upright head, skull on top of the vertebral column, steep forehead.