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.
| 601. |
Besides radio dating which method can be used to find out whether a fossil is of oder era ?A. Lava depositsB. Igneous rocksC. Metamorphic rocksD. Sedimentary strata |
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Answer» Correct Answer - D Besides radio dating, sedimentary strata method can be used to find out whether a fossil is of order era. |
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| 602. |
What are vertebrates? |
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Answer» Animals which have a backbone are called vertebrates. For example: A cow |
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| 603. |
Ordovician is also called age ofA. annelidsB. arthroopodsC. giant molluscaD. echinoderms |
| Answer» Correct Answer - C | |
| 604. |
What does primitive mean? |
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Answer» ‘Primitive’ means ‘the first’. |
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| 605. |
Where do apes mostly live? |
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Answer» Apes mostly lived on trees. |
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| 606. |
How did the Human species evolve? |
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Answer» Some ape species found in grasslands were forced to move around on ground. These species evolved gradually and in time gave rise to human species. |
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| 607. |
Who are Apes? |
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Answer» Apes are somewhat like humans in appearance. |
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| 608. |
age of amphibians isA. eoceneB. jurassicC. carboniferousD. oligocene |
| Answer» Correct Answer - C | |
| 609. |
Fill in the blanks :1. Species which are capable of adapting to environmental changes are able to ………… 2. Species that cannot adapt to environmental changes become ………….3. …………………… means a ‘terrible lizard’. 4. Some sudden natural………………….. is believed to be responsible for the extinction of Dinosaurs. 5. Fossils of dinosaurs with ………………… have been discovered |
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Answer» 1. survive 2. extinct 3. Dinosaurs 4. disaster 5. wings |
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| 610. |
Age of fishes isA. permianB. devonianC. triassicD. miocene |
| Answer» Correct Answer - B | |
| 611. |
What is meant by gene flow? |
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Answer» Changes in the gene pool of population when there is continuous migration of organisms between them i.e. it refers to the addition or loss of genes. |
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| 612. |
What do you understand by differential reproduction and reproductive isolation? In what context are these term used? |
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Answer» Differential reproduction: The phenomenon in which all organisms who reach reproductive stage reproduce with varying degree of success, some reproduce more offsprings and some reproduce only few and other reproduce none depending upon their degree of fitness. Reproductive isolation: The biological phenomenon in which the individual belonging to same species reproduce among themselves, to maintain the species integrity. Both these terms are used in reference to natural selection. |
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| 613. |
Name the immediate ancestor of lycopods. |
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Answer» Zosterophyllum. |
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| 614. |
Age of invertebrates wasA. cambrianB. silurianC. ordovicianD. permian |
| Answer» Correct Answer - C | |
| 615. |
What are invertebrates? |
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Answer» Animals without a backbone are called ‘invertebrates’. For example: a snail. |
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| 616. |
Define natural selection? |
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Answer» Natural selection is the process in which heritable variations that enable better survival, are enabled to produce and leave behind a greater number of progeny. |
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| 617. |
Define the term “reproductive isolation”. |
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Answer» If the population of 2 different species whether they are isolated or not, cannot be enter bread to produce offspring. |
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| 618. |
Were the first-formed organisms autotrophic or heterotrophic ? |
| Answer» Correct Answer - Heterotrophic | |
| 619. |
Darwin’s theory is known as “Theory of Natural selection”. How is Lamark theory know as? |
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Answer» Theory of inheritance of acquired characters. |
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| 620. |
Assertion:Muscles of external ears are fully developed in humans Reason: Ear muscles close the ears during excussive noiseA. If both Assertion and Reason are true and Reason is the correct explanation of AssertionB. If both Assertion and Reason are true and Reason is not the correct explanation of AssertionC. If Assertion is true but Reason is false.D. If both Assertion and Reason are false |
| Answer» Correct Answer - D | |
| 621. |
What are connecting link? Give example. |
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Answer» The organisms which possess the characters of two different groups (transitional stage) are called connecting links. Example Peripatus (connecting link between Annelida and Arthropoda) Archaeopteryx (connecting link between Reptiles and Aves). |
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| 622. |
Mass extinction at the end of Mesozoic era was probably caused byA. Continental driftB. Massive glaciationC. Collision of earth with large meteoriteD. Both 1 and 3 |
| Answer» Correct Answer - D | |
| 623. |
Ancestor of man who first stood erect was :A. Java manB. AustralopithecusC. Peking manD. Cro-Magnon man |
| Answer» Correct Answer - A | |
| 624. |
There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of DNA however suggested African origin of modern man. What kind of observation on DNA variation could suggest this ?A. Greater variation in Asia than in AfricaB. Greater variation in Africa than in AsiaC. Similar variation in Africa and AsiaD. Variation only in Asia and no variation in Africa |
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Answer» Correct Answer - A (a) There are two models is about origin of modem man (Homo sapiens sapiens), i.e. (a) Multiregional model According to this view, modern humans evolved in many parts of the world from regional descendants . of Homo erectus who dispersed from Africa between 1 and 2 million years ago. (b) Monogenesis model According to this view only African descendants of Homo erectus gave rise to modern humans. In late 1980s Rebecca Cann and other geneticists supported this view on the basis of DNA of living humans. They compared the mitochondrial DNA (mtDNA) of a multiathenic sample of more than 100 people representing four continents. The greater the difference between the mtDNAs of two peoples, the longer ago that mtDNAs diverged from a common source. In late 1980s Rebecca Cann and other geneticists supported this view on the basis of DNA of living humans. They compared the mitochondrial DNA (mtDNA) of a multiathenic sample of more than 100 people representing four continents. The greater the difference between the mtDNAs of two peoples, the longer ago that mtDNAs diverged from a common source. |
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| 625. |
Hogo de Vries gave his mutation theory on organic evolution while working on `:`A. Pisum sativumB. Drosophila melanogasterC. Oenothera lamarckianaD. Althea rose |
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Answer» Correct Answer - C Hugo de Vries (1848-1935) proposed mutation theory for the formation of new species. He came to conclude this theory while working on Oenothera lamarckiana evening primrose. According to him, new species are not formed by continuous variations but by sudden appearance of variations which he assigned as mutations. He stated that these mutations are heritable and persist in successive generations |
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| 626. |
What was the term given by Darwin for the differences in characteristics?A. Natural selectionB. FitnessC. EvolutionD. Variation. |
| Answer» Correct Answer - D | |
| 627. |
A star fish with six arms may be a case ofA. VaraitionB. EvolutionC. AutotomyD. Mutation |
| Answer» Correct Answer - A | |
| 628. |
If two organisms are more closely related then which of the following is a possibility?A. They will share common ancestor in the future.B. They share a common ancestor in the distant historyC. They share a common ancestor in the recent historyD. They will not at all share any common ancestor |
| Answer» Correct Answer - C | |
| 629. |
Sibling species are also known asA. Sub speciesB. GenusC. Subline speciesD. Biological races |
| Answer» Correct Answer - D | |
| 630. |
Closely related varying different in trait expressesA. Convergent evolutionB. Divergent evolutionC. Parallel evolutionD. None of these |
| Answer» Correct Answer - C | |
| 631. |
Closely related varying different in trait expressesA. Convergent evolutionB. Divergent evolutionC. Parallel evolutionD. None of the above |
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Answer» Correct Answer - B Closely related species with different traits exhibit divergent evolution. |
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| 632. |
Which is not a pre-zygotic isolation mechanismA. Geographical isolationB. Ecological isolationC. Seasonal isolationD. Hybrid sterility |
| Answer» Correct Answer - D | |
| 633. |
According to Darwin, evolution is ...........A. a slow, sudden and discontinuous processB. a slow and discontinuous processC. a sudden but discontinuous processD. a slow, gradual and continous process |
| Answer» Correct Answer - D | |
| 634. |
The formula of genetic drift that occurs in small isolated population isA. `GD prop (sqrt(pn))/(q)`B. `GD prop (sqrt(pq))/(n)`C. `GD prop (sqrt(n))/(pq)`D. `GD prop (sqrt(pn))/(p)` |
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Answer» Correct Answer - B `GD prop(sqrt(pq))/(n) , p=" frequency of one allele , q = frequency of alternate allele , n = number of total genes."` |
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| 635. |
Which one of the following considered to be ancestor of all other?A. CabbageB. CauliflowerC. KohlrabiD. Colewort |
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Answer» Correct Answer - D Colewort is wild mustard. By selective, breeding/artifical selection, cabbage (selection for terminal bud), brussel (selection for lateral buds), Kohlrabi (selection for stem), kale (selection for leaves), broccoli (selection for stems and flowers) and cauliflower (selection for flower clusters ) have been produced from it. |
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| 636. |
Which is incorrect ?A. J.B.S. Haldane - Law of continuity of germplasmB. Louis Pasteur - Germ theory of disease and immunologyC. De Vries - Mutation theoryD. Lemaitre - Big bang theory |
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Answer» Correct Answer - A Weismann-Law of continuity of germplasm. |
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| 637. |
Given below are four statements (a-d) with one or two blanks. Select the option which fills up the blanks in two statements. (a) Wings of butterfly and birds look alike and are the result of ........(i)........evolution (b) Miller showed that `CH_(4), H_(2), NH_(3)` and ........(i).........when exposed to electric discharge in flask resulted in the formation of ......(ii)....... Evidence of evolution. (c) Vermiform appendix is a .......(i)...... Organ and ......(ii)........ (d) According to Darwin evolution look place due to........(i).......and .....(ii) of the fittest.A. d-(i) small variations, (ii) survival, a-(i) convergentB. a-(i) convergent, b-(i) oxygen, (ii) nucleotidesC. b-(i) water vapours (ii) amino acids, c-(i) rudimentary (ii) anatomicalD. c-(i) vestigial (ii) anatomical, d-(i) mutations (ii) multiplication. |
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Answer» Correct Answer - A Wings of butterfly and birds look alikem, and are the result of convergent evolution. Miller showed that `CH_(4), H_(2), NH_(3)` and water vapour when exposed to electric discharge in flask resulted in the formation of amino acid evidence of evolution. Vermiform appendix is a vestigial organ and anatomical. According to Darwin evolution look place due to small variations and survival of the fittest. |
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| 638. |
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements. (A) Wings of butterfly and birds look alike and are the results of i evolution. (B) Miller showed that `CH_(4), H_(2),NH_(3)` and i when exposed to electric discharge in a flask resulted in formation of ii (C) Vermiform appendix is a i organ and an ii evidence of evolution. (D) According to Darwin, evolution took place due to i and ii or the fittest.A. (D)-(i) Small variation, (ii) Survival, (A)- (i) ConvergentB. (A)-(i) Convergent, (B)-(i) Oxygen, (ii) NucleosidesC. (B) - (i) Water vapour, (ii) Amino acids (C ) - (i) Vestigial, (ii) AnatomicalD. (C ) - (i) Vestigial, (ii) Anatomical (D) - (i) Mutation, (ii) Multiplication |
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Answer» Correct Answer - A Rudimentary means at an early stage of development (Collins) or a body part that is not fully developed. |
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| 639. |
The effects of genetic drift are more marked inA. larger populationsB. Mendelian populationsC. island populationsD. smaller populations. |
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Answer» Correct Answer - D The random changes in gene frequencies in a population occuring by chance alone rather than by natural selection are called genetic drift or Sewall Wright effect. The effects of genetic drift are msot marked in very smalled isolated population, although it occurs in all populations. |
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| 640. |
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements. (A) Wings of butterfly and birds look alike and are the results of i evolution. (B) Miller showed that `CH_(4), H_(2),NH_(3)` and i when exposed to electric discharge in a flask resulted in formation of ii (C) Vermiform appendix is a i organ and an ii evidence of evolution. (D) According to Darwin, evolution took place due to i and ii or the fittest.A. (D)-(i) Small variations , (ii)survival, (A)-(i)convergentB. (A)-(i)convergent, (B)-(i) Oxygen, (ii)NucleosidesC. (B)-(i)water vapour, (ii)Amino acids, (C )-(i)Rudimentary , (ii)AnatomicalD. ( C )-(i)Vestigial, (ii)Anatomical , (D) - (i)Mutations, (ii)Multiplication |
| Answer» Correct Answer - A | |
| 641. |
Given below are four statements (A-D) each with onw or two blanks. Select the the option which correctly fills up the blanks in two statements: (A) Wimgs of butterfly and birds look alike and are the results of `ul(i)`, evolution. (B) Miller showed that `CH_(4), H_(2), NH_(3)` and `ul(i)`, when exposed to electric discharge in a flask resulted in formation of `ul(ii)`. (C) Vermiform appendix is a `ul(i)` organ and an `ul(ii)` evidence of evolution. (D) According to Darwin evolution took place due to `ul(i)` and `ul(ii)` of the fittest.A. (D)-(i) Small variations, (ii) Survival (A)-(i) ConvergentB. (A)-(i) Convergent, (B)-(i)Oxygen, (ii) nucleosidesC. (B)-(i) Water vapour, (ii) Amino acids (C)-(i) Rudimentary, (ii) AnatomicalD. (C)-(i) Vestigeal, (ii) Anatomical (D)-(i) Mutations, (ii) Multiplication |
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Answer» Correct Answer - A According to Darwin, evolution took place due to small variation and survival of the fittest. Wings of butterfly and birds are analogous or convergent. Vermiform appendix is vestigial organ. |
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| 642. |
First cell produced on Earth is :A. metazoaB. protozoaC. protobiontD. none of these |
| Answer» Correct Answer - C | |
| 643. |
Which of the following evolved first?A. CoacervatesB. ViroidsC. CyanobacteriaD. Mycoplasma |
| Answer» Correct Answer - A | |
| 644. |
When a primitive bacterium is exposed to oxygenA. it diesB. it develops chlorophyllC. it produces methane ozoneD. it works faster |
| Answer» Correct Answer - A | |
| 645. |
Parasites showA. progressive evolutionB. speciationC. retrogressive evolutionD. coevolution |
| Answer» Correct Answer - C | |
| 646. |
Some organisms resemble other organisms and thus escape from enemies. This phenomenon is known as :A. homologyB. variationC. analogyD. mimicry |
| Answer» Correct Answer - D | |
| 647. |
Reason of fast speciation in present day crop plant is :A. mutationB. isolationC. polyploidyD. sexusl reproduction |
| Answer» Correct Answer - C | |
| 648. |
During an excavation assignment, scientists collected pollen grains of a plant preserved in deeper layers of soil. Analyse the properties of pollen grains which help in the fossilization. |
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Answer» Pollen has an outer layer called exine which is made of sporopollenin. It is the most resistant organic material known. It can withstand high temperature, strong acids and alkali as well. No enzyme that degrades sporopollenin is so far known. |
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| 649. |
Fill in the blank (i), (ii), (iii), (iv) with name of the mammals of Australia.Placental mammalMarsupial mammalAnteater(i)(ii)Spotted cuscusBob cat(iii)(iv)Tasmanian wolf |
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Answer» i. Numbat ii. Lemur iii. Tasmanian tiger cat iv. Wolf |
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| 650. |
List any four evidences of evolution. |
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Answer» Four evidence = Fossils / comparative anatomy / homologous organs/Analogous organs / Bio-Chemical evidences/embryological evidences. Detailed answer: Four Evidences of evolution (a) Paleontological evidences (b) Morphological and anatomical evidences. (c) Biogeographical evidences (d) Biochemical evidences. |
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