EvolutionHard
Question
Which one is irrelevant to evolution of man ?
Options
A.Perfection of hand for tool making
B.Change of diet from hard nuts / roots to soft food
C.Increased ability to communicate or develop community behaviour
D.Loss of tail
Solution
Evolution simply means an orderly change from one condition to another. It is is often called descent with modification. Tail provides an evidence of atavism or reversion, ie, reappearance of certain ancestral charaaters which had disappeared or were reduced. Tail is absent in man, but occasionally early embryo of man possesses an external tail (vestigial tail vertebrae). In adults the tail is represented by a string of caudal vertebrae, which constitute the coccyx (tail bone).
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