6.Evolution
normal

ડાર્વિનવાદ પ્રમાણે કાર્બનિક ઉત્ક્રાંતિ શું છે?

A

નિકટની જાતિઓ વચ્ચે સ્પર્ધા

B

દખલ દેતી જાતિઓને કારણે એક જાતિમાં ખોરાકગ્રહણ શક્તિનો ઘટાડો

C

આંતરજાતીય સ્પર્ધા

D

અંત:જાતીય સ્પર્ધા

(NEET-2013)

Solution

(c) : Intraspecific competition leads to evolution. Variations arise naturally in a growing population due to crossing over etc. Organisms with variations better suited to their environment are favoured by natural selection, while less fitted ones are eliminated. Gradually this continued process of natural selection leads to evolution. Interspecfic struggle also plays a role in evolution but intraspecific struggle is more intense and prominent one.

Standard 12
Biology

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