Q4. Which of the two early primates was more man-like, and when did they live?
Ramapithecus was more man-like (Dryopithecus more ape-like); they lived about 15 mya (NCERT page 124).
Q5. What does NCERT say the australopithecines ate, and with what did they hunt?
They hunted with stone weapons but essentially ate fruit (NCERT page 124).
Q6. What does NCERT Figure 6.11 show about the skull of a baby chimpanzee?
It is more like the adult human skull than the adult chimpanzee skull (NCERT Figure 6.11, page 125).
Q7. By how much is the upper brain size of Homo habilis larger than its lower value, by NCERT’s range?
800 − 650 = 150 cc (NCERT page 124).
Q8. During which period did modern Homo sapiens arise, by NCERT’s account?
During the ice age, between 75 000 and 10 000 years ago (NCERT page 125).