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Evolution

Question
CBSEENBI12002438
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Which of the following had the smallest brain capacity?

  • Homo erectus

  • Homo sapiens

  • Homo neanderthalensis

  • Homo habilis

Solution

D.

Homo habilis

Homo habilis had the smallest brain capacity. Homo habilis also called the 'tool maker' or 'hand man' had a brain capacity of 700 cc.
Homo erectus had a brain or cranial capacity of 800-1300 cc.
Homo sapiens or modern man showed a slight reduction in brain/cranial capacity, i.e. 1300-1600 cc will be an average of 1450 cc. 

Some More Questions From Evolution Chapter

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 ?

Name the different eras of geologic time scale.

What is single step large mutation?

Consider a thorn in Bougainvillea and a tendril in cucurbita. Are these two organs homologous or analogous ? Give reason.

Give two examples that represent adaptive radiation.

Which theory attempts to explain to us the origin of universe?

Evolution is a discontinuous process. Is it correct ?

Give the three key factors of the modern concept of evolution.

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