A) survival of the fittest
B) struggle for existence
C) inheritance of acquired characters
D) origin of species by natural selection
Correct Answer: C
Solution :
Inheritance of acquired character in organism related to Lamarckism and not Darwinism. According to which, all that has been acquired by the organism during its life time due to direct or indirect environmental effects is preserved by the generation and is transmitted to the offspring. In the offspring, these modifications become more and more pronounced if they are exposed to similar stress of the environment as was faced by their parents or ancestors such cumulative effect will ultimately result in the appearance of new species. According to survival of the fittest or natural selection, only those individuals could survive which exhibit such variations, that are proved to be more beneficial in facing hardness and region of the environment or which change to adapt to the changing conditions. Struggle for existence states that individual multiply in geomatric ratio whereas space and food remain almost constant and there is an intense competition and 3 fold struggle for to ensure living 1 to obtain maximum amount of food and suitable land. Survival of the fittest and adaption leads to origin of new species.
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