Cause of sudden extinction of a species may be:
A.Harmful mutation
B.Catastrophic changes of environment
C.Both (a) & (b)
D.None of these
A.Harmful mutation
B.Catastrophic changes of environment
C.Both (a) & (b)
D.None of these
A.External feature of animals
B.Functional anatomy
C.Classification of animals and plants
D.None of these
A.Gill clefts in the vertebrate embryos
B.Wings in the insects, birds and bats
C.Jointed legs of arthropods and mammals
D.Excretory organs in earthworm and frog
A.Kangaroo
B.Donkey
C.Monotremes
D.Leucosolania
A.Archaeology
B.Zoogeography
C.Palaeotology
D.Cytology
A.Vermiform appendix, ear muscles and cochlea
B.Coccyx, parthyroid and chin
C.Coccyx, vermiform appendix and ear muscles
D.Vermiform appendix, coccyx and olecranon process
A.Whale between fishes and mammals
B.Archaeopteryx between birds and mammals
C.Duck-bill Platypus between reptiles and mammals
D.Lave Ape Man between modern man and peking man
A.Atavism
B.Recapitulation
C.Mutation
D.None of these
A.Omnis Vivo-Ex-Vivo
B.Contagium Vivum Fluidum
C.Descent with Modification
D.None of these
A.Lamarck
B.Empedocles
C.Aristotle
D.Darwin