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CSS :: Organic Evolution


91.  Giant Dinosaurs became extinct during:
A. Triassic period B. Jurassic period
C. Cretaceous period D. Oligocene period

92.  The camel, horse, monkey, whale etc. originated during:
A. Eocene Epoch B. Oligocene epoch
C. Miocene epoch D. Pliocene epoch

93.  Mammals are as old as:
A. Proterozoic era B. Palaeozoic era
C. Mesozoic era D. Coenozoic era

94.  Presence of temporary gill pouches in embryos of snakes, birds and mammals suggest that:
A. Embryos need pouches for breathing B. Lungs evolved in these animals from gill pouches
C. Ancestors of these animals had gill pouches D. Medium in which these embryos develop resemble oxygen rich water

95.  Serum of blood of man is mixed with rabbits antiserum, the result would be:
A. Coagulation B. Precipitation into white ppt.
C. Both (a) & (b) D. None of these

96.  Serum of human blood is injected into rabbit, the blood of rabbit would form:
A. Antigen B. Antiserum
C. Both (a) & (b) D. None of these

97.  Serological precipitation test help to determine similarity as well as dissimilarity in blood proteins of diverse vertebrates has been found to confirm their accepted phylogenetic relationship and represents evidence of organic evolution from:
A. Comparative embryology B. Comparative physiology
C. Comparative tectology D. None of these

98.  The heart when first develops in embryos of amphibians, reptiles, birds and mammals has got:
A. Single chamber B. Two chambers
C. Three chambers D. Four chambers

99.  Which of the following statements are true:
A. Two chambered embryonic heart becomes three chambered in Amphibians and Reptiles during the course of later embryonic development B. Two chambered embryonic heart becomes four chambered in birds and mammals during further course of development
C. Both (a) & (b) D. None of these

100.  The early stages of embryonic development in all metazoans i.e. morula, blastula and gastrula are basically similar and indicate:
A. Variation B. Monophyletic origin
C. Mutation D. None of these




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