Evolution

Primitive atmosphere was made up of the mixture of : (1) Oxygen, ammonia, methane, water (2) Hydrogen, ammonia, methane, oxygen (3) Hydrogen, steam, methane, ammonia (4) Oxygen, methane, water, nickel 2.In the direction of the origin of lifewhich compounds were formed: (1) Urea, nucleic-acid (2) Urea, amino-acid (3) Proteins, nucleic-acid (4) Protein, amino-acid 3. Themost important for origin of life is (1) Carbon (2) Oxygen (3) Water (4) Nitrogen 4. How Pasteur succeeded in disproving the theory of spontaneous generation (1) The laboratory was clean (2) He pulled out the neck of flask into a tube (3) He was lucky (4) Yeast used in flask were dead 5. The basis of origin of life is: (1) Spontaneous generation (2) God’s desire (3) Sunlight on mud (4) None of them 6. AtmosphericOxygen in has been formed by: (1) Evaporation of water (2) Photosynthesis of blue green algae (3) Metabolism of microorganisms (4) Decaying organisms 7. Primitive atmosphere was reducing because : (1) Hydrogen atoms were few (2) Hydrogen atoms were active and in greater number (3) Nitrogen atoms were more (4) Oxygen atoms were more 8. ………….called larger colloidal particles of primitive sea as coacervates: (1) Fox (2) Oparin (3) Empedocles (4) Haldane 9. ……………..called water of primitive sea as pre biotic soup: (1) Haldane (2) Oparin (3) Fox (4) Huxley 10. Theory of Oparin’s is based on: (1) Artificial synthesis (2) Spontaneous generation (3) God’s will (4) All 11. Who gave most logical biochemical theory of origin of life ? (1) Urey (2) Oparin (3) Stanley Miller (4) Haeckel 12. What was the sequence of substances which appeared on earth during the course of origin of life? (1) Water, oxygen, nucleic acids, enzymes (2) Amino acids, ammonia, phosphates, nucleic acids (3) Glucose, amino acids, nucleic acids, proteins (4) Ammonia, Amino acids, proteins, nucleic acids 13. The first organisms which inhabited earth’s surface were : (1) Autotrophs (2) Mixotrophs (3) Heterotrophs (4) Chromatotrophs 14. In prebiotic evolution ……. compound having very important role. (1) SO2 (2) CH4 (3) SO3 (4) NO 15. Under certain conditions scientists have obtained non-cellular structures. These are known as: (1) Microbes (2) Protists (3) Coacervates (4) Prebiotic soup 16. …………did an experiment to prove that "The organic compounds were the basis of life"? (1) Darwin (2) Stanley Miller and Harold C.Urey (3) Melvin (4) Fox 17. Due to discovery of which of the following in 1980, the evolution was termed as RNA world : (1) m - RNA , t - RNA, r - RNA synthesise proteins (2) In some virus RNA is genetic material (3) RNA has enzymatic property (4) RNA is not found in all cells 18. Which statement is true for Archaebacteria :- (1) All Halophils (2) All photosynthetic (3) All fossils (4) Oldest living beings 19. First life on earth was :- (1) Cyanobacteria (2) Chemoheterotrophs (3) Autotrophs (4) Photoautotrophs 20. The favorite idea of astronomers (1) Special creaction theory (2) Cosmic panspermia (3) Biogensis (4) Abiogensis 21. Match the following columns and find correct combination : Column I Column II a Darwin p Mutation theory b De Vries q Protobiosis c Pasteur r Origin of species d Fox s Special Creation t Swan-Necked FlaskExperiment (1) a = r, b, = p, c = t, d = q (2) a = p, b = q, c = r, d = s (3) a = t, b = r, c = q, d = p (4) a = r, b = t, c = p, d = q 22. In an isolated population Frequency of an allele may change due to:- (1) Genetic drift (2) Gene flow (3) Mutation (4) Natural selection 23. In Streptomycin containing medium Some bacteria are able to grow due to - (1) Natural selection (2) Induced mutation (3) Reproductive isolation (4) Genetic drift 24. What is important for speciation : (1) Seasonal isolation (2) Reproductive isolation (3) Behavioural isolation (4) Tropical isolation 25. Genetic drift operates in :- (1) Small isolated population (2) Large isolated population (3) Fast reproductive population (4) Slow reproductive population 26. While working on ………………. De Vries gave his mutation theory on organic evolution (1) Oenothera lamarckiana (2) Drosophila melanogaster (3) Pisum sativum (4) Althea rosea 27. One of the following factors help in evolution but is not considered as the basic factor for evolution : (1) Isolation (2) Adaptation (3) Variation (4) Mutation 28. Factors helps in the formation of new species are : (1) competition and variation (2) isolation and competition (3) competition and mutation (4) isolation and mutation 29. Which is not related to the Darwinian evolutionary theory is : (1) survival of the best (2) struggle for existence (3) inheritance of acquired characters (4) origin of species by natural selection 30. Inheritance of acquired characters comes from : (1) Lamarckism (2) Darwinism (3) Neo-Lemarckism (4) Neo-Darwinism 31. Coverstone of theory of Darwin was : (1) natural selection (2) inheritance of acquired characters (3) omnis cellulae e cellulae (4) higher productivity 32. Which one is an example of the chance of elimination of genes from a small population (1) selection pressure (2) speciation (3) adaptation (4) genetic drift 33. For adaptive radiation the classical exampleis (1) Darwin finches (2) marsupials of Australia (3) giant turtle (4) all of these 34. Struggle for existence and survival of the fittest theories were given By: (1) Wallace (2) Darwin (3) Lamarck (4) none of these 35. Among the following , which is not a concept of Lamarck? (1) environmental pressure causes variation (2) rate & survival of organism is different due to variation (3) inheritance of acquired character (4) if an organ is used constantly it will continuously increase its size. 36. Initiating force of evolution is: (1) Variation (2) Natural selection (3) Adaptation (4) Competition 37. Which of the following is responsible for the origin of new species according to the Neo-Darwinian theory? (1) Mutations only (2) Useful variations and natural selection (3) Mutations together with natural selection (4) Hybridization only 38. Which of the following was not given by Darwin’s theory of evolution ? (1) Struggle for existence (2) Over production (3) Natural selection (4) Genetic drift 39. Which primate is closest to man regarding organic evolution : (1) Gibbon (2) Gorilla (3) Sinanthropus (4) Orangutan 40. Which character applies to Homo sapiens : (1) Opposable toe (2) Large canine (3) Cranial capacity 1450 cc (4) Chin prominence absent 41. Key biological compounds were synthesised during chemical evolution, (1) in the atomosphere (2) along the ocean shore (3) in the ocean (4) none of the above 42. Big bang theory was proposed by: (1) Kant (2) Miller (3) Lemaitre (4) Darwin 43. Miller and Urey performed an experiment to prove the origin of life. They took gases NH3 and H2 along with: (1) N2 and H2O (2) H2O and CH4 (3) CH4 and N2 (4) CO2 and NH3 44. What is Abiogenesis? (1) origin of life from non-living material (2) origin of life from living organism (3) origin of viruses and microbes (4) none 45. Most modern hypothesis regarding origin of life was given by: (1) Wallace (2) Hugo de Vries (3) Oparin (4) Charles Darwin
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PREVIOUS YEAR NEET QUESTIONS 1. Stanley L. Miller conducted experiments before 1953on prebiotic earth environment using special apparatus.The primary surprising products were (a) amino acids (b) peptides (c) nucleotides (d) simple sugars 2. Who proposed that the first form of life come from preexisting non- living molecules? (a) Oparin and Haldane (b) de Vries and Haldane (c) Darwin and Lamarck (d) Louis Pasteur and Miller 3. How is extinction represented in a family tree diagram? (a) When a branch splits. (b) When a branch ends. (c) When a branch shifts along x - axis. (d) When a branch shifts along y - axis. 4. Atmosphere of earth just before the origin of lifeconsisted of (a) water vapours, CH4, NH3 and oxygen. (b) CO2, NH3, and CH2 (c) CH4, NH3, H2 and water vapours. (d) CH4, O3, O2 and water vapours. 5. Analogous organs are (a) different in origin but perform similar functions. (b) common in origin and perform common functions. (c) common in origin but perform different functions. (d) different in origin and perform different functions. 6. Homologous organs show (a) divergent evolution. (b) convergent evolution. (c) parallel evolution. (d) both (b) and (c). 7. What is common amongst whale, seal and shark (a) Homoiothermy (b) Seasonal migration (c) Thick subcutaneous fat (d) Convergent evolution 8. Thorn of Bougainvillea and tendril of Cucurbita areexamples of (a) retrogressive evolution. (b) analogous organs. (c) homologous organs. (d) vestigial organs. 9. Industrial melanism is an example of (a) drug resistance. (b) darkening of skin due to smoke from industries. (c) protective resemblance with the surroundings. (d) defensive adaptation of skin against ultravioletradiations. 10. Darwin’s finches are a good example of (a) convergent evolution (b) industrial melanism (c) connecting link (d) adaptive radiation 11. Adaptive radiation refers to (a) power of adaptation in an individual to a variety ofenvironments. (b) adaptations due to Geographical isolation. (c) evolution of different species from a commonancestor. (d) migration of members of a species to differentgeographical areas. 12. The Finches of Galapogas islands provide an evidencein favour of (a) biogeographical evolution (b) special creation (c) evolution due to mutation (d) retrogressive evolution 13. The term ‘Survival of Fittest’ was used by (a) Charles Darwin (b) Herbert Spencer (c) Jean Baptiste (d) Hugo de Vries 14. Tasmanian Wolf is a marsupial while Wolf is a placentalmammal. This shows (a) convergent evolution (b) divergent evolution (c) inheritance of acquired characters (d) None of these 15. Darwin was most influenced by (a) Lamarck’s theory of acquired characters. (b) Weismann’s theory of germplasm. (c) Wallace’s theory of origin of species. (d) Essay on Population by Malthus. 16. Single step large mutation leading to speciation is alsocalled (a) Founder effect (b) saltation (c) branching descent (d) natural selection 17. A population is in Hardy- weinberg equilibrium for a genewith only two alleles. If the gene frequency of an allele A is 0.7, the genotype frequency of Aa is (a) 0.21 (b) 0.42 (c) 0.36 (d) 0.7 18. If the frequency of dominant allele is 60%, find outthe percentage of heterozygous individuals in thepopulation. (a) 48% (b) 50% (c) 47% (d) 45% 19. Random genetic drift in a population probably resultsfrom (a) highly genetically variable individuals. (b) interbreeding within the population. (c) constant low mutation rate. (d) large population size. 20. Natural selection can lead to (a) stabilization (b) directional change (c) disruption (d) all of these 21. The first mammals were like (a) chimpanzee (b) gorilla (c) shrews (d) reptiles 22. Which one of the following was the first to stand erect ? (a) Peking Man (b) Australopithecus (c) Java Man (d) Cro-Magnon man 23. The extinct human ancestor who ate only fruits andhunted with stone weapons was (a) Ramapithecus (b) Australopithecus (c) Dryopithecus (d) Homo habilis 24. Which of the following statement is/are correct? (i) Adaptative ability is inherited. (ii) Adaptative ability has a genetic basis (iii) Fitness is the end result of the ability to adapt andget selected by nature. (a) Only (ii) (b) Both (i) and (iii) (c) All of these (d) None of these 25. Select the correct statement(s). (i) Microbial experiment show the pre-existingadvantageous mutations when selected will resultin the observation of new phenotypes. Over fewgeneration this would result in speciation. (ii) Neanderthal fossils represent a human relative. (iii) In 1938, a fish caught in South Africa happened tobe a coelacanth (lobe fins) which was thought to beextinct. These animals evolved into the firstamphibians living on both land and water. (iv) Lichens can be used as water pollution indicators. (v) Alfred Wallace, a naturalist, who worked in MalayArchaepelago (present Indonesia) had also come tosimilar conclusion on natural selection as reachedby Darwinism. (a) (i) and (ii) (b) (i), (ii), (iii) and (v) (c) (iii) and (iv) (d) (iv) and (v) 26. Which of the following features are correct for Homo erectus? (i) Had a large brain around 900 c.c. (ii) Probably ate meat. (iii) Appeared about 1.5 mya year ago. (iv) Evolved from H. habilis. (a) (i) and (ii) (b) (ii) and (iii) (c) None of these (d) All of these
1 A 13 B 25 B
2 A 14 A 26 D
3 B 15 D
4 C 16 B
5 A 17 B
6 A 18 A
7 D 19 A
8 C 20 D
9 C 21 C
10 D 22 B
11 C 23 B
12 A 24 C