1. One of the important consequences of geographical isolation is

A. preventing speciation
B. speciation through reproductive isolation
C. random creation of new species
D. no change in the isolated fauna
Answer :   speciation through reproductive isolation
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2. One of the revolutionary concepts in biology was Charles Darwin's 'Origin of Species'. It deals with

A. Gene mutation
B. Use and disue of organs
C. Germplasm Theory
D. Natural selection leading to the survival of the fittest
Answer :   Natural selection leading to the survival of the fittest
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3. Which biologist gave most logical biochemical theory of origin of life

A. Urey
B. Oparin
C. Stanley Miller
D. Haeckal
Answer :   Oparin
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4. Snakes do not have legs because

A. Legs are lost during their entry in tunnels
B. Legs are lost during evolution
C. The ancestors of reptiles did not have legs
D. There are no legs in lizards
Answer :   Legs are lost during evolution
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5. What was the most significant trend in evolution of modern man (Homo sapiens) from his ancestors?

A. Upright posture
B. Shortening of jaws
C. Binocular vision
D. lncreasing brain capacity
Answer :   lncreasing brain capacity
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6. The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, With short stature, heavy eyebrows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was

A. Homo habilis
B. Neanderthal human
C. Cro-magnan humans
D. Ramapithecus
Answer :   Neanderthal human
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7. Occurrence of endemic species in South America and Australia is due to

A. These species have been extinct from other regions
B. Continental separation
C. There is no terrestial route to these places
D. Retrogressive evolution
Answer :   Continental separation
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8. Scientific name of man is

A. Canis familiaris
B. Homo habilis
C. Homo erectus
D. Homo sapies
Answer :   Homo sapies
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9. In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner?

A. Migration
B. Mutations
C. Random drift
D. Selection
Answer :   Random drift
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10. Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms, includes

A. study of carbohydrates/proteins in fossils
B. study of the conditions of fossilization
C. electron spin resonance (ESR) and fossil DNA
D. study of carbohydrates/proteins in rocks
Answer :   electron spin resonance (ESR) and fossil DNA
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