NEET2010ZoologyEvolutionActual
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 information of (ii) (C) Vermiform appendix is a (i) organ and an (ii) evidence of evolution.
Options
- A(D)-(i) small variations, (ii) survival, (A)-(i) convergent
- B(A)-(i) convergent, (B)-(i) oxygen, (ii) nucleosides
- C(B)-(i) water vapour, (ii) amino acids (C)-(i) rudimentary, (ii) anatomical
- D(C)-(i) vestigial, (ii) anatomical (D)-(i) mutations, (ii) multiplication
Correct answer
A. (D)-(i) small variations, (ii) survival, (A)-(i) convergent
Step-by-step solution
Wings of butterfly and birds look alike and are the result of convergent evolution. Miller showed that CH ₄, H ₂, NH ₃ and water vapour, when exposed to electric discharge in a flask, resulted in formation of amino acids. Vermiform appendix is a vestigial organ and an anatomical evidence of evolution. According to Darwin, evolution took place due to small variations and survival of the fittest. Hence, option (a) is correct.