According to Darwin, The organic evolution is due to
Options
(a) Interspecific competition (b) Competition within closely related species (c) Reduced feeding efficiency in one species (d) Intraspecific competition
Correct Answer:
Intraspecific competition
What is common between parrot, platypus and kangaroo?
Options
(a) Toothless jaws (b) Functional post-end tail (c) Ovoparity (d) Homeothermy
Correct Answer:
Homeothermy
Explanation:
No explanation available. Be the first to write the […]
Thorn of Bougainvillea and tendril of cucurbita are example of
Options
(a) analogous organ (b) homologous organs (c) vestigial organs (d) retrogressive evolution
Correct Answer:
homologous organs
Explanation:
No explanation available. Be the […]
One of the important consequences of geographical isolation is
Options
(a) preventing speciation (b) speciation through reproductive isolation (c) random creation of new species (d) no change in the isolated fauna
Correct Answer: […]
The finches of Galapagos islands provide an evidence in favour of
Options
(a) evolution due to mutation (b) retrogressive evolution (c) biogeographical evolution (d) special creation
Correct Answer:
biogeographical evolution
Explanation:
No explanation […]
Among the human ancestors the brain size was more that 1000 cc in
Options
(a) Homo erectus (b) Ramapithecus (c) Homo habilis (d) Homo neanderthalensis
Correct Answer:
Homo neanderthalensis
Explanation:
Homo habilis had […]
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed
Options
(a) microevolution (b) co-evolution (c) convergent evolution (d) divergent evolution
Correct Answer: […]
Dinosaurs dominated the world in which of the following geological era?
Options
(a) Devonion (b) Coenozoic (c) Jurassic (d) Mesozoic
Correct Answer:
Mesozoic
Explanation:
Dinosaurs dominated the world in mesozoic era. In Triassic […]
Which one of the following in birds, indicates their reptilian ancestry?
Options
(a) Scales on their hind limbs (b) Four-chambered heart (c) Two special chambers crop and gizzard in their digestive tract (d) […]
Variation in gene frequencies within populations can occur by chance rather than by natural section. The is referred to as
Options
(a) Genetic drift (b) Random mating (c) Genetic load (d) Genetic flow
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