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Biology · 2023 · 3 marks
CBSE 2023 · Region 1 · Set 1 · Q27
(a) Name the two primate ancestors of the present day humans, who existed approximately about 15 million years ago. (b) According to geological…
(a)
Name the two primate ancestors of the present day humans, who existed approximately about $\displaystyle 15$ million years ago.
(b)
According to geological records, when and where did Australopithecines live ?
(c)
Give two differences between Homo habilis and Homo erectus.
Marking-scheme solution
(a) Dryopithecus, Ramapithecus
(b) Time period : $\displaystyle 2$ million years ago Place : East African grasslands
(c)
| Homo habilis | Homo erectus |
| Brain capacity between $\displaystyle 650$-$\displaystyle 800$ cc | Brain capacity $\displaystyle 900$ cc |
| probably did not eat meat. | probably ate meat |
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CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.