InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Darwin gave the theory of evolution was based onA. mutationB. environment and lifeC. natural selectionD. chromososme pairing |
| Answer» Correct Answer - C | |
| 202. |
The idea of Natural Selection as the fundamental process of evolutionary changes was reachedA. by Charles Darwin in 1866B. by Alfred Russel Wallace in 1901C. independently by Charles Darwin and Alfred Russel Wallace in 1990D. independently by Charles Darwin and Alfred Russel Wallace in 1859 |
| Answer» Correct Answer - d | |
| 203. |
According of Darwin, the organic evolution is due toA. Interspecific competitionB. Intraspecific competitionC. Competition within closely related speciesD. Reduced feeding efficiency in one species due to the presence of interfering species |
| Answer» Correct Answer - A | |
| 204. |
Fossils act as evidence of organic evolution. Which one of these features does not justify feature of fossils ?A. They are remains of hard parts of life forms that existed in the pastB. They are the remains of decayed and decomposed body partsC. Fossils present in the lower strata of the earth are older than those present in the upper strataD. Study of fossils in different sedentary layers indicates the geological period in which they existed. |
| Answer» Correct Answer - B | |
| 205. |
Which mechanism of evolution affects the genetic make-up in a population ?A. AdaptinB. Genetic driftC. Gene mutationD. natural selection |
| Answer» Correct Answer - c | |
| 206. |
Evolution of different species in a given area starting from a point and spreadig to other geographical areas is known asA. migration of the members of species from one to other populationB. natural selectionC. adaptive radiationD. divergent evolution |
| Answer» Correct Answer - c | |
| 207. |
Evolution of different species in a given area starting from a point and spreadig to other geographical areas is known asA. migrationB. natural selectionC. adaptive radiationD. convergent evolution |
| Answer» Correct Answer - c | |
| 208. |
Which one is linked to evolution ?A. variationB. ExtinctionC. CompetitionD. Reproduction |
| Answer» Correct Answer - A | |
| 209. |
Allopatric speciation is due toA. migration of the members of species from one to other populationB. hybridization between closely related speciesC. geographical separation of populationD. both (a) and (b) |
| Answer» Correct Answer - C | |
| 210. |
Sympartic speciation is `:`A. the appearance of a new species in the same areas as the parent populationB. emergence of many species from a single ancestorC. initiated by the appearance of a geographical barrierD. the process by which most animal species have evolved |
| Answer» Correct Answer - a | |
| 211. |
Which of the following is the first step in allopatric speciation ?A. Genetic driftB. hybridizationC. geographical isolationD. Formation of reproductive barrier |
| Answer» Correct Answer - c | |
| 212. |
A major source of speciation is `:`A. Gene flowB. MutationC. Geographical isolationD. Hybrid breakdown |
| Answer» Correct Answer - C | |
| 213. |
A study of white winged and melanised moths made in England before and after industrialisation in 1850 and 1920 respectively , supporting evolution by `:`A. Natural selectionB. adaptive radiationC. Parallel evolutionD. divergent evolution |
| Answer» Correct Answer - a | |
| 214. |
The concept of "Biological species " was proposed by `:`A. Darwin was correctB. MayrC. von BaerD. Linnaeous |
| Answer» Correct Answer - B | |
| 215. |
Which one of the following is not a living fossil Or Missing link in evolution isA. PeripatusB. King crabC. SphenodondD. Archaeopteryx |
| Answer» Correct Answer - D | |
| 216. |
Being all mammals, whale, dolphins, bat, monkey and horse have some common character but they also show conspicuous differences. This is due to phenomenon ofA. divergenceB. genetic driftC. convergenceD. normalization |
| Answer» Correct Answer - a | |
| 217. |
Fossil bird having reptilian character evolved during which period ?A. TriassicB. JurassicC. CreataceousD. carboniferous |
| Answer» Correct Answer - b | |
| 218. |
Atavism in man means `:`A. appearance of new charactersB. evolution of existing charactersC. appearance of ancestral charactersD. loss of some pre-existing characters |
| Answer» Correct Answer - c | |
| 219. |
Which of the following is not an atavistic character ?A. Dense body hairsB. Enlarged caninesC. Presence of six fingersD. Presence of tail in some babies |
| Answer» Correct Answer - c | |
| 220. |
Appearance of profuse hairs on the body and face of iris dogman is an example of `:`A. atavismB. mutationC. recapitulation theoryD. retrogressive metamorphosis |
| Answer» Correct Answer - A | |
| 221. |
A baby has been born with a small tail. It is case exhibiting `:`A. atavismB. mutationC. metamorphosisD. retrogressive evolution |
| Answer» Correct Answer - A | |
| 222. |
Which one of the following pairs of items correctly belongs to the category of organs mentioned against itA. Wings of honeybee and - Homologous organs wings of crowB. Thorn of Bougainvillea - Analogous organs and tendrils of CucurbitaC. Nictitating membrane and blindspot in human eye - Vestigial organsD. Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs |
| Answer» Correct Answer - D | |
| 223. |
Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination andA. saltationB. evolutionC. limiting factorsD. natural selection |
| Answer» Correct Answer - d | |
| 224. |
Phenomenon of industrial melanism demonstratesA. natural selectionB. induced mutationC. reproductive isolationD. geographical isolation |
| Answer» Correct Answer - a | |
| 225. |
Antiserum is a serum containing `:`A. antigensB. antibodiesC. leucocytesD. none of these |
| Answer» Correct Answer - b | |
| 226. |
Ontogeny recapitulates phylogeny is narrated in which of the evidences for organic evolution ?A. Anatomical evidenceB. Physiological evidenceC. Embryological evidenceD. Palaeontological evidence |
| Answer» Correct Answer - c | |
| 227. |
Organic evolution means `:`A. history of raceB. development of raceC. progressive development of raceD. history and development of race with variations |
| Answer» Correct Answer - d | |
| 228. |
Biologists define evolution as `:`A. heritable changes in a line of descent over generationsB. inheritance of characteristics acquired by the individedC. the origin of speciesD. none of the above |
| Answer» Correct Answer - a | |
| 229. |
Hardy -Weinberg equilibrium operates in absence of `:`A. recombinationB. mutationC. natural selectionD. all of these |
| Answer» Correct Answer - D | |
| 230. |
Hardy-Weinberg principle explains `:`A. genetic equilibriumB. non-random matingC. evolutionary forceD. all of these |
| Answer» Correct Answer - A | |
| 231. |
In Hardy-Weinberg equation, the frequency of heterozygous individual is represented byA. pqB. `q^(2)`C. 2pqD. `p^(2)` |
| Answer» Correct Answer - C | |
| 232. |
The hardy-weinberg principle cannot operate ifA. the population is very largeB. frequent mutations occur in the populationC. free interbreeding occurs among all members of the populationD. the population has no chance of interaction with other populations |
| Answer» Correct Answer - B | |
| 233. |
Which one of the following is not a vestigial structure in Homo sapiens ?A. EpiglottisB. Third molarC. Plica semilunarisD. Pyramidalis muscle |
| Answer» Correct Answer - a | |
| 234. |
The time required populations to diverge to form new species `:`A. is rarely more than 1000 yearsB. is never less than 100,000 yearsC. is always greater in plants than in animalsD. varies from a single generation to millions of years |
| Answer» Correct Answer - D | |
| 235. |
Assertion (A ) `:` The long neck of giraffe is due to centripetal selection. Reason (R ) `:` During directional selection when the mean value of phenotype coincide with new optimum environmental conditions. Centripetal selection takes over.A. Both (A ) and (R ) are true and (R ) is the correct explanation of (A).B. Both (A ) and (R ) are true but (R ) is not the correct explanation of (A)C. (A ) is true statement but (R ) is falseD. Both (A ) and (R ) are false |
| Answer» Correct Answer - A | |
| 236. |
Where there is sustained directional change in the average characters of a population due to adaptation to a shifting evironment is called `:`A. quantum evolutionB. phyletic evolutionC. Both (a) and (b)D. none of these |
| Answer» Correct Answer - b | |
| 237. |
Directional selection `:`A. works against adaptive traitsB. favours intermediate forms of a traitC. eliminates uncommon forms of allelesD. shits allele frequencies in a steady, consistent direction |
| Answer» Correct Answer - D | |
| 238. |
Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations by `:`A. cladogenesisB. directional selectionC. phyletic changeD. normalising selection |
| Answer» Correct Answer - d | |
| 239. |
The theory of use and disuse of organs was given by `:`A. LamarckB. DarwinC. WeismannD. Hogo de Vries |
| Answer» Correct Answer - a | |
| 240. |
Vestigial organs present in an adult individual are example of basis of evidences of evolution `:`A. anatomicalB. embryologicalC. morphologicalD. palaeontological |
| Answer» Correct Answer - C | |
| 241. |
The basis of Lamarckism is `:`A. reduction of organB. effect of metabolismC. effect of environmentD. development of organ |
| Answer» Correct Answer - C | |
| 242. |
Which is not explained by Lamarckism ?A. Weak progency of a Nobel laureateB. Elongation of neck of giraffeC. Loss of tail in human beingD. None of the above |
| Answer» Correct Answer - a | |
| 243. |
Palaeozoic era is the era of `:`A. fishesB. birdsC. mammalsD. reptiles |
| Answer» Correct Answer - a | |
| 244. |
Convergent evolution is shown by `:`A. rabbit and dogB. starfish and jellyfishC. fish and whaleD. bacteria and Amoeba |
| Answer» Correct Answer - C | |
| 245. |
Which one of the following options gives one correct example each of convergent evolution and divergent evolution ?A. `{:("Convergent evolution",,,,"Divergent evolution"),("Thorns of Bougainvillea and tendrils of Cucurbita",,,,"Wings of butterflies and birds"):}`B. `{:("Convergent evolution",,,,"Divergent evolution"),("Bones of forelimbs of vertebrates",,,,"Wings of butterfly and birds"):}`C. `{:("Convergent evolution",,,,"Divergent evolution"),("Eyes of Octopus and mammals",,,,"Bones of forelimbs of vertebrates"):}`D. `{:("Convergent evolution",,,,"Divergent evolution"),("Thorns of Bougainvillea and tendrils of Cucubita",,,,"Eyes of Octopus and mammals"):}` |
| Answer» Correct Answer - c | |
| 246. |
Morphological convergence may lead to `:`A. divergent structuresB. analogous structuresC. homologous structuresD. both (a) and (c ) |
| Answer» Correct Answer - b | |
| 247. |
Evolutionary convergence is the development of `:`A. common set of characters in groups of different ancestryB. common set of character in closely related groupsC. dissimilar characters in closely related groupsD. random mating |
| Answer» Correct Answer - A | |
| 248. |
Stem replies were `:`A. IchthyosaursB. PterosaursC. AmphibiansD. Cotylosaurs |
| Answer» Correct Answer - d | |
| 249. |
The greatest evolutionary change enabling the land vertebrates to be completely free from water , was the development ofA. lungsB. four legsC. four chambered heartD. cleidoic eggs and internal fertilization |
| Answer» Correct Answer - d | |
| 250. |
Who propounded the theory of aquatic or marine origin of life ?A. BonnetB. ThalesC. AristotleD. Erasmus Darwin |
| Answer» Correct Answer - b | |