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Q1. A true species in mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird ?
- ADove
- BDodo
- CCondor
- DSkua
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Answer: B) Dodo
Q2. Within ecological communities, some species are inportant in determining the ability of a large nuber of other species to persist in the community such species are called-
- AKeystone species
- BAllopatric species
- CSympatric species
- DThreatened species
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Answer: A) Keystone species
Q3. In the context of organic evolution, the loss of limbs in snakes is explained by the phenomenon of-
- AUse and disuse of organs
- BAdaptation to living in burrows
- CNatural selection
- DInheritance of acquired characters
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Answer: A) Use and disuse of organs
Q4. Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species ?
- AIsolation
- BMutation
- CNatural selection
- DSexual reproduction
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Answer: B) Mutation
Q5. With reference to the evolution of living organism, which one of the following sequance is correct ?
- AOctopus - Dolphin - Shark
- BPangolin - Tortoise - Hawk
- CSalamander - Python - Kangaroo
- DFrog - Crab - Prawn
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Answer: C) Salamander - Python - Kangaroo
Q6. The most accepted theory of origin of life is-
- ATheory of spontaneous generation
- BOparin - Haldane theory
- CTheory of special creation
- DTheory of eternity of life
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Answer: B) Oparin - Haldane theory
Q7. The recapitulation theory was proposed by-
- AMuller
- BWeissmann
- CErunst Haeckel
- DMorgan
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Answer: C) Erunst Haeckel
Q8. Life originate by Chemosynthesis was proved in the labouratory by-
- APasteur
- BSagar
- CAristotle
- DMiller
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Answer: D) Miller
Q9. Evolutionary development of a species can be best studied by-
- ADNA analysis
- BFinding age by carbon dating
- CStudying fossils of this species
- DAll of above
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Answer: C) Studying fossils of this species
Q10. Human evolution is originated in-
- AAfrica
- BJawa
- CFrance
- DChina
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Answer: A) Africa
Q11. Wings of pigeon, bat and mosquito exhibit the phenomen on called-
- AConvergent evolution
- BDivergent evolution
- CAtavism
- DAll of these
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Answer: A) Convergent evolution
Q12. Which of the following all includes homologous organs ?
- AWing of butterfly, wing of a bird, and wing of bat
- BFore limb of frog, wing of birds, and fore limb of rabbit
- CThorocic leg of cokroach, hind leg of a frog and fore limb pf rabbit
- DWing of a bird, wing of a bat and wing of a flying lizard
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Answer: B) Fore limb of frog, wing of birds, and fore limb of rabbit
Q13. Homologous organs are-
- ADissimilar origin and dissimiar structure
- BDissimilar origin but similar function
- CSimilar origin with similar or dissimilar function
- DSimilar origin with dissimilar function
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Answer: C) Similar origin with similar or dissimilar function
Q14. Fossilization can occur where-
- AAnimals are buried by natural process
- BAnimals are destroyed by scavengers
- CAnimals are eaten by predators
- DAnimals are destroyed by environmental condition
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Answer: A) Animals are buried by natural process
Q15. Ontogeny repeats phylogeny' is the brief definition of-
- AMutation theory
- BBiogenetic law
- CDarwinism
- DAbiogenesis
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Answer: B) Biogenetic law
Q16. Russian scientist who proposed the theory of origin of life was-
- AOparin
- BHaldane
- CMiller
- DFox
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Answer: A) Oparin
Q17. Earth originated in the past period of about-
- A4.5 billion years
- B8.0 billion years
- C3 billion years
- D1 billion year
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Answer: A) 4.5 billion years
Q18. The scientist associated with formulation of modern theory of origin of life and having written origin of life was-
- AOparin
- BHuxley
- CLamark
- DDarwin
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Answer: A) Oparin
Q19. Tusks of elephant are-
- ACannines
- BUpper incisors
- CMolar
- DLower incisors
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Answer: B) Upper incisors
Q20. Lamarck's theory of evolution is also called-
- ASurvival of the fittest
- BSpecial creation theory
- CInheritance of acquired characters
- DNone of these
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Answer: C) Inheritance of acquired characters
Q21. Who published the book 'Origin of species by natural selection in 1859' ?
- ALamarck
- BDarwin
- CWallace
- DOparin
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Answer: B) Darwin
Q22. The concept of survival of the fittest as advanced by-
- ACharles Lyell
- BCharles Darwin
- CHerbert Spencer
- DAlfred Russel Wallace
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Answer: C) Herbert Spencer
Q23. Natural selection really means-
- AStruggle for existance
- BDifferential reproduction
- CSurvival of the fittest
- DElimination of the unfit
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Answer: B) Differential reproduction
Q24. Analogous organs are-
- ASimilar in structure
- BSimilar in function
- CSimilar in structure and function both
- DOrgan are nonfunction
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Answer: B) Similar in function
Q25. Homologous organs are-
- ASimilar in structure
- BSimilar in function
- CSimilar in both structure and function
- DDisimillar in structure
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Answer: A) Similar in structure