This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 1 The Living World – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 1 The Living World Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Two species have the same niche are at a place that suits their needs. The species that is stronger will have an edge over the other, excluding them from that place A) Parasitism. B) Resource partioning. C) Competitive exclusion. D) Fundamental niche. Show Answer Correct Answer: C) Competitive exclusion. 2. Taxonomic studies depends on A) Ecological information of organisms. B) Structure of cell and development process of organisms. C) External and internal structure of organisms. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. Approximately how many people does Alaska's fishing industry employ? A) About eighty thousand people. B) About ten thousand people. C) About two hundred thousand. D) About five thousand people. Show Answer Correct Answer: A) About eighty thousand people. 4. Boulders and sand mounds show A) Intrinsic growth. B) Extrinsic growth. C) External growth. D) 2 &3 both. Show Answer Correct Answer: D) 2 &3 both. 5. National botanical institute is located in A) (A) kolkata. B) ( c) New delhi. C) (d) Lucknow. D) ( b) Chennai. Show Answer Correct Answer: A) (A) kolkata. 6. Consider the two statements:i. In a single celled organisms we are not very clear about the usage of two terms:Growth and Reproductionii.When it comes to unicellular organisms like amoeba and bacteria, reproduction is synonymous to growth ie increase in number of cells. A) Both i and ii are correct and ii rightly explains i. B) Both i and ii are correct but ii does not explains i. C) I is true but ii is false. D) Both i and ii are false. Show Answer Correct Answer: A) Both i and ii are correct and ii rightly explains i. 7. Terrestrial animals live: A) On land. B) In water. C) In air. D) None of the above. Show Answer Correct Answer: A) On land. 8. This cycle includes:evaporation, condensation, precipitation, and then groundwater. A) Nitrogen cycle. B) Phosphorus cycle. C) Water cycle. D) Carbon cycle. Show Answer Correct Answer: C) Water cycle. 9. Species with a narrow ecological niche. They may be able to live in only one type of habitat, tolerate only a narrow range of climatic and other environmental conditions, or use only one type or a few types of food. A) Foundation species. B) Indicator species. C) Generalist species. D) Specialist species. Show Answer Correct Answer: D) Specialist species. 10. The sole members of the Kingdom Monera are: A) Bacteria. B) Fungi. C) Protozoans. D) Algae. Show Answer Correct Answer: A) Bacteria. 11. Things with a mass and occupy space are known as A) Solid. B) Liquid. C) Matter. D) Energy. Show Answer Correct Answer: C) Matter. 12. What is a necessary thing for linving thing. A) Respiration. B) Excreation. C) Breathing. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. What do we call a group of animals of different species? A) A community. B) A population. C) An ecosystem. D) A biome. Show Answer Correct Answer: A) A community. 14. How much freshwater on Earth is accessible for use? A) 2%. B) .02%. C) 20%. D) 97%. Show Answer Correct Answer: B) .02%. 15. A relationship in which two different organisms live in close association with each other A) Commensalism. B) Parasitism. C) Mutualism. D) Symbiosis. Show Answer Correct Answer: D) Symbiosis. 16. A process by which plants get their food A) By roots. B) By pores. C) By eating. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 17. Phytoplankton are most abundant in the upper few hundred feet of most bodies of water because A) As primary producers, they must be accessible to many other organisms. B) They feed on zooplankton, which are found only in the top layers of water. C) They are benthic organisms. D) Sunlight does not penetrate to great depths in water. E) They can most readily hide from predators there. Show Answer Correct Answer: D) Sunlight does not penetrate to great depths in water. 18. Deforestation causes an increase in atmospheric carbon dioxide A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. The practical purpose of classification of living organisms is to A) Explain the origin of living organsims. B) Name the living organisms. C) Facilitate identification of unknown organisms. D) Trace the evolution of living organsims. Show Answer Correct Answer: C) Facilitate identification of unknown organisms. 20. In a typical forest ecosystem, dead trees and fallen trees are most important because of their role in which of the following? A) Contributing to soil erosion. B) Providing habitats for wildlife. C) Increasing water runoff. D) Removing carbon dioxide from the air. E) Providing a valuable source of timber. Show Answer Correct Answer: B) Providing habitats for wildlife. 21. Which of these continents does NOT have a hot desert? A) Asia. B) South America. C) Africa. D) Europe. Show Answer Correct Answer: D) Europe. 22. The term 'systematics' refers to: A) Identification and classification of plants and animals. B) Nomenclature and identification of plants and animals. C) Diversity of kinds of organisms and their relationship. D) Different kinds of organisms and their classification. Show Answer Correct Answer: C) Diversity of kinds of organisms and their relationship. 23. ..... bacteria change the nitrates back into nitrogen gas that is then released back into the atmosphere. A) Denitrifying. B) Ammonifying. C) Phagocytotic. D) Nitrogen fixing. Show Answer Correct Answer: A) Denitrifying. 24. Ecosystem diversity A) Succession following a disturbance that destroys a community without destroying the soil. B) Variety of habitats, living communities, and ecological processes in the living world. C) Measurement of different species in a given area to describe an ecosystem (synonym for species diversity). D) The range of genetic material present in a gene pool or population of a species. Show Answer Correct Answer: B) Variety of habitats, living communities, and ecological processes in the living world. 25. Relative abundance A) The sprouting of a seed. B) The limits to the abiotic conditions that a species can tolerate. C) The proportion of each species. D) The number of different species in a community. Show Answer Correct Answer: C) The proportion of each species. 26. Fill the blanks:Term systematics was coined by ..... Biological species concept given by ..... A) C. Linnaeus and Ernst Mayr. B) J. Huxley and C. Linnaeus. C) Fleming and Watson. D) Aristotle and C. Linnaeus. Show Answer Correct Answer: A) C. Linnaeus and Ernst Mayr. 27. ICBN correctly stands for A) International Conversation of Botanical Nomenclature. B) International Conditions of Botanical Nomenclature. C) International Culture of Botanical Nomenclature. D) International Code of Botanical Nomenclature. Show Answer Correct Answer: D) International Code of Botanical Nomenclature. 28. What is a food web? A) A linear representation of the flow of energy and nutrients from one organism to another. B) A model of an interlocking pattern of food chains that depicts the flow of energy and nutrients in two or more food chains. C) A relationship where two species compete for limited resources. D) A relationship where two species mutually benefit from each other. Show Answer Correct Answer: B) A model of an interlocking pattern of food chains that depicts the flow of energy and nutrients in two or more food chains. 29. Pulp cavity of teeth is lined by A) Amyloblast. B) Chondroblast. C) Osteoblast. D) Odontoblast. Show Answer Correct Answer: D) Odontoblast. 30. The "Tragedy of The Commons" is ..... A) An economic issue where people do not have enough money to buy basic needs so they resort to stealing and breaking the law. B) A type of play where someone tragically dies or gets killed. C) Economic issue where individuals tend to take advantage of the natural resource and it becomes unavailable for everyone. D) None of the above. Show Answer Correct Answer: C) Economic issue where individuals tend to take advantage of the natural resource and it becomes unavailable for everyone. 31. The organism that does the killing in a predation interaction A) Adaptation. B) Prey. C) Competition. D) Predator. Show Answer Correct Answer: D) Predator. 32. What is the significance of sacred groves mentioned in the text? A) They are places for recreation. B) They are used for farming. C) They are tourist attractions. D) They are protected areas for biodiversity. Show Answer Correct Answer: D) They are protected areas for biodiversity. 33. The bottom region of oceans and bodies of fresh water is A) Nekton. B) Benthic Zone. C) Limnetic Zone. D) Benthos. Show Answer Correct Answer: B) Benthic Zone. 34. Which of the following holds true for scientific nomenclature? A) Naming of living organisms in English language. B) Naming of particular organism by the same name all over the world. C) Naming of living organism in such a manner that it may cause less confusion. D) Naming of living organisms in such a manner that it becomes easy to pronounce. Show Answer Correct Answer: B) Naming of particular organism by the same name all over the world. 35. Which type of organism breaks down dead organisms and waste, returning important nutrients to the environment? A) Carnivore. B) Herbivore. C) Decomposer. D) Omnivore. Show Answer Correct Answer: C) Decomposer. 36. What is venation? A) Pattern of veins in leaves. B) Type of root. C) Plant growth. D) None of the above. Show Answer Correct Answer: A) Pattern of veins in leaves. 37. Which cycle DOESN'T have an atmosphere component (part)? A) Carbon. B) Water. C) Phosphorus. D) Nitrogen. Show Answer Correct Answer: C) Phosphorus. 38. Phosphorus cycling is slow because: A) Only a small number of animals make phosphate rich manure (guano). B) There is no atmospheric component and phosphorus is returned to the land from the ocean via geological processes. C) Phosphorus is immobilized for long periods in plant and animal tissues. D) Humans remove too much phosphorus for agriculture. Show Answer Correct Answer: B) There is no atmospheric component and phosphorus is returned to the land from the ocean via geological processes. 39. Assertion:Panthera is a polytypic genera. Reason:Panthera has specific epithets like leo, tigris and pardus. A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. B) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. C) If Assertion is true but Reason is false. D) If both Assertion and Reason are false. Show Answer Correct Answer: A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. 40. Which human activity would most likely deplete nonrenewable resources? A) Useof natural enemies to eliminate insect pests. B) Governmentalrestriction of industrial pollution. C) Developmentof wildlife refuges. D) Increased use of fossil fuels. Show Answer Correct Answer: D) Increased use of fossil fuels. 41. Why is accessibility a problem in the Thar desert? A) Roads get flooded, roads have no signposts. B) Tarmac melts on roads, sand dunes block roads. C) The speed limit is 250mph and people drink/drive. D) Camels sit on the roads, there are no maps. Show Answer Correct Answer: B) Tarmac melts on roads, sand dunes block roads. 42. Viruses are non cellular organism but replicate themselves once they infest the host cell To which of the following kingdom do virus belong to A) Monera. B) Protista. C) Fungi. D) None of these. Show Answer Correct Answer: D) None of these. 43. Every species has its own range of ..... , the ability to survive and reproduce under a range of environmental circumstances. A) Niche. B) Ecosystem. C) Tolerance. D) Population. Show Answer Correct Answer: C) Tolerance. 44. If an island is closer to the mainland, how will this impact the biodiversity? A) There will be a higher level of biodiversity here than an island that is further away. B) There will be a lower level of biodiversity here than an island that is further away. C) There will be no difference in biodiversity on islands based on distance to mainland. D) None of the above. Show Answer Correct Answer: A) There will be a higher level of biodiversity here than an island that is further away. 45. A living organisms is unexceptionally differentiated from a non living structure on the basis of A) Reproduction. B) Growth and movement. C) Interaction with environment. D) Responsiveness. Show Answer Correct Answer: D) Responsiveness. 46. Camels survive in deserts because: A) They can store water. B) They have thick fur. C) They can fly. D) None of the above. Show Answer Correct Answer: A) They can store water. 47. Beavers are an example of this; an organism that helps to alter an ecosystem A) Bioaccumulation. B) Invasive species. C) Ecosystem engineer. D) Parasitism. Show Answer Correct Answer: C) Ecosystem engineer. 48. With respect to the fungal sexual cycle, choose the correct sequence of events A) Karyogamy, plasmogamy, and meiosis. B) Meiosis, plasmogamy, karyogamy. C) Plasmogamy, karyogamy, meiosis. D) Meiosis, karyogamy, plasmogamy. Show Answer Correct Answer: C) Plasmogamy, karyogamy, meiosis. 49. Which scientist is known for documenting India's plant biodiversity? A) Dr. Raghu. B) Salim Ali. C) Janaki Ammal. D) Maniram chacha. Show Answer Correct Answer: C) Janaki Ammal. 50. Scientists have detected a dramatic decrease in usable nitrogen levels in the soil of a local ecosystem. Which of the following is a likely theory to explain this problem? A) A decrease in the amount of lightning strikes. B) An increase in the biomass forming plants. C) An increase in fertilizer usage at local farms. D) A decrease in bacterial colonies within the soil. Show Answer Correct Answer: D) A decrease in bacterial colonies within the soil. 51. Pioneer species like moss and lichen are most likely to show up after A) Primary succession. B) Secondary succession. C) All the above. D) None of the above. Show Answer Correct Answer: A) Primary succession. 52. Building proteins and DNA is the reason organisms need what substance? A) Nitrogen. B) Water. C) Calcium. D) Carbon. Show Answer Correct Answer: A) Nitrogen. 53. Fill in the blank: ..... is the complete disappearance of a species from earth. It happens when a species cannot adapt and successfully reproduce under new environmental conditions or when species evolve into one or new species. A) Speciation. B) Migration. C) Adaptation. D) Background extinction. Show Answer Correct Answer: D) Background extinction. 54. Controlled breeding that is done by humans in an enclosed area (like a zoo), for rare/endangered species A) Biodiversity hotspot. B) Exponential growth. C) Captive breeding. D) Succession. Show Answer Correct Answer: C) Captive breeding. 55. THE LARGEST BOTANICAL GARDEN LOCATED IN A) HOWRAH. B) PUNE. C) KEW. D) MOSCOW. Show Answer Correct Answer: C) KEW. 56. The process that has been used for centruries to create purebred animals such as black labs is called A) Recombinant DNA. B) Cloning. C) Selective breeding. D) None of the above. Show Answer Correct Answer: C) Selective breeding. 57. Which of the following is not an example of a behavioural adaptation A) Humans building igloos. B) Salmon migrating upriver to bread. C) A bird singing a song to attract a mate. D) Fish gills for breathing. Show Answer Correct Answer: D) Fish gills for breathing. 58. Which type of plant has a stem that is usually short and has multiple branches arising from the base? A) Shrub. B) Tree. C) Herb. D) Creeper. Show Answer Correct Answer: A) Shrub. 59. The total weight of all the biotic elements in an ecosystem A) Population. B) Biomass. C) Bioaccumulation. D) Exponential growth. Show Answer Correct Answer: B) Biomass. 60. What role do bacteria play in the Nitrogen Cycle? A) Nitrogen fixation. B) Nitrification. C) Denitrification. D) None of the above. Show Answer Correct Answer: A) Nitrogen fixation. 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