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Evolution

Question
CBSEENBI12002491
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What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors? 

  • shortening of jaws

  • Binocular vision

  • Increasing brain capacity 

  • Upright posture

Solution

C.

Increasing brain capacity 

The first human- like being was the hominid, called Homo habilis. The brain capacities were between 650 - 800 cc. They probably did not eat meat. Fossils discovered in Java in 1891 revealed the next stage, i.e, Homo erectus. Homo erectus had a large brain and probably ate meat. The Neanderthal man with a brain size of 1400 cc lived in near east and central Asia between 1,00,000-40,000 year back. They used hides to protect their body and buried their dead. Homo sapiens arose in Africa and moved across continents and developed into distinct races. During ice age between 75,000 - 10,000 years back modern HOmo sapiens arose

Some More Questions From Evolution Chapter

Give another name for origin of life from non living matter.

Arrange the following substances in a proper sequence with regard to the formation of chemical constituents at the time of origin of life :

Sugar, methane, nucleic acid and amino acid.

What is the phenomenon called when the original drifted population becomes founders?

What are the two key concepts of Darwinian Theory of Evolution

What were the units of life according to the early Greek thinkers ?

Mention the type of nutrition in the cells originated first during the origin of life.

Which group of organisms were responsible for appearance of free oxygen in the atmosphere of the primitive earth ?

What is meant by the term fossil ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

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