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

Statements :

(A) Wings of butterfly and birds look alike and are the results of(i)evolution.

(B) Miller showed that CH4, H2, NH3 and (i),whenexposed 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. (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

Answer 1

The correct option is A (D) - (i) Small variations, (ii) Survival

(A) - (i) Convergent
According to Darwin, evolution took place due to small variations and survival of the fittest. Wings of butterfly and birds are analogous or convergent. Vermiform appendix is vestigial organ.