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