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 andare the results of ___$(i)$___ evolution.

$(B)$ Miller showed that $CH_4 , H_2 , NH_3$ and ___$(i)$___ when exposed to electric discharge in a flaskresulted in formation of ___$(ii)$___ .

$(C)$ Vermiform appendix is a ___$(i)$___ organ and an ___$(ii)$___ evidence of evolution.

$(D)$ According to Darwin evolution took placedue to ___$(i)$___ and ___$(ii)$___ of the fittest.

  • [AIPMT 2010]
  • 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

Similar Questions

Definitions / Explanation : Homology & Adaptive radiation or divergent evolution

 

Match the columns :

Column - $I$ Column - $II$
$(1)$ Mutation $(a)$ Change in population allele frequencies due to chance alone.
$(2)$ Gene flow $(b)$ Difference insurvival and reproduction
$(3)$ Natural selection $(c)$ Immigration, emigration change allele frequencies.
$(4)$  Genetic drift $(d)$ Source of new alleles.

 

Complete fossil of whose among the following is found

Match the following.

Column $- I$ Column $- II$
$(A)$ Lamark $(p)$ Finch bird
$(B)$ De Vries $(q)$ Evening primerose
$(C)$ Darwin $(r)$ Giraffes
$(s)$ Melanic moths

Definitions / Explanation : Analogous organs & Vestigial or rudimentary organs