Question

i.) Each early hominin was alone in Africa, with little evidence of other hominin species living nearby. True or Flase

ii) Bipedalism is an arboreal adaptation. True or Flase

Answer 1

1) True

• Immediate ancestor of humans are the members of genus astralopithecus .Both australopithecines and humans are biologically similar enough to be classified as members of the same biological tribe--the Hominin.
• The earliest australopithecines very likely did not evolve until 5 million years ago or shortly thereafter (during the beginning of the Pliocene Epoch) in East Africa.  
• By 3 million years ago, they were common in both East and South Africa. Some have been found dating to this period in North Central Africa also.
• However, African forests were progressively giving way to sparse woodlands and dry grasslands, or savannas

2) True

• Bipedalism is a form of terrestrial locomtion , where organism move by means of two limbs or legs.
• Arboreals are the animals which live in trees.
• Recently discovered australopithecine limb bones may be interpreted as indicating a primarily arboreal adaptation, emphasizing brachiation, with bipedalism