Choose any two developments each from Timelines 1 and 2 at the end of the chapter and indicate why these are significant. Timeline 1 (mya) 36-24 mya Primates; Monkeys in Asia and Africa 24 mya (Superfamily) Hominoids; Gibbons, Asian orang-utan and African apes (gorilla, chimpanzee and bonobo or ‘pygmy’ chimpanzee) 6.4 mya Branching out of hominoids and hominids 5.6 mya Australopithecus 2.6-2.5 mya Earliest stone tools 2.5-2.0 mya Cooling and drying of Africa, resulting in decrease in woodlands and increase in grassland 2.5-2.0 mya Homo 2.2 mya Homo habilis 1.8 mya Homo erectus 1.3 mya Extinction of Australopithecus 0.8 mya ‘Archaic’ sapiens, Homo heidelbergensis 0.19-0.16 mya Homo sapiens (Modern humans) Timeline 2 (years ago) Earliest evidence of burials 300,000 Extinction of Homo erectus 200,000 Development of voice box 200,000 Archaic Homo sapiens skull in the Narmada valley, India 200,000¬ 130,000 Emergence of modern humans 195,000¬ 160,000 Emergence of Neanderthals 130,000 Earliest evidence of hearths 125,000 Extinction of Neanderthals 35,000 Earliest evidence of figurines made of fired clay 27,000 Invention of sewing needles 21,000
HistoryClass 11CBSEAnswered 27 Mar 2026
Answer
Answer:
Developments from Timeline-1
- The evidence of the first Hominids was found about 5.6 mya. The Hominids evolved from Hominoids. They had some common features. Hominids had larger brain than Hominoids. Hominids had an upright posture and bipedal locomotion. There was a marked difference in regard to hand. It helped them in use of tools.
- Around 2.5 mya, large parts of the earth were covered with snow. There were major changes in the environment. It led to expansion of grassland.
Developments from Timeline-2
- Around 200,000 years ago, the evolution of the voice box took place. After the evolution of voice box, now the man was about to speak and express his views.
- About 27,000 years ago, the earliest evidence of figurines made of fired clay was also found. The invention of sewing machines made the life of people more comfortable.
Suggested Q&A
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