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Question

Given below are four statements (A - D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
(A) Wings of butterfly and birds look alike and are the results of __(i)__ evolution.
(B) Miller showed that $$CH_{4}, H_{2}, NH_{3}$$ and __(i)__ when exposed to electric discharge in a flask resulted in formation of __(ii)__.
(C) Vermiform appendix is a __(i)__ organ and an __(ii)__ evidence of evolution.
(D) According to Darwin evolution took place due to __(i)__ and __(ii)__ of the fittest.


A
(A) - (i) convergent; (D) - (i) small variations, (ii) survival
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B
(A) - (i) convergent; (B) - (i) oxygen, (ii) nucleosides
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C
(B) - (i) water vapour, (ii) amino acids; (C) - (i) homologous, (ii) anatomical
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D
(C) - (i) vestigial, (ii) anatomical; (D) - (i) mutations, (ii) multiplication
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Solution

The correct option is A (A) - (i) convergent; (D) - (i) small variations, (ii) survival
Wings of butterfly and birds look alike and are the results of Convergent evolution. According to Darwin evolution took place due to small variations and survival of the fittest.
So, the correct option is '(A)-(i)convergent, (D)-(i)small variations, (ii)survival'

Biology

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