PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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 Natural selection is a driving force for evolution-How?
 
a. Darwin's discoveries were published under the title .
 
b. According to Darwinian theories, natural selection is a driving force in .
 
c. Living organisms can reproduce and form their progeny in a  way . This leads to an increase in reproductive potential leading to the  of organisms that survive.

d. The geometric ratio of population is , resulting in an overproduction of organisms.

e. The competition for resources such as food, shelter, breeding places etc., among the organisms of the same species is known as .
 
f. The competition for resources such as food, shelter, breeding places etc., among the organisms of the two different species living together is known as .
 
g. The struggle faced by the organisms due to environmental factors such as drought, heavy rains, extreme heat or cold, earthquakes and other natural calamities is known as .

h. According to Darwin, favourable variations are .
 
i. The process of selection of organisms with favourable variation is called as .