This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 1 The Living World – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 1 The Living World Quiz 21 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A pair of small lymphatic tissue present atthe sides of root tongue is called as A) Thyroid. B) Tonsils. C) Adenoids. D) Epiglottis. Show Answer Correct Answer: B) Tonsils. 2. The water cycle ..... influence(s) the nitrogen cycle. A) Does. B) Does not. C) Lightly. D) None of the above. Show Answer Correct Answer: A) Does. 3. Plants breath through tiny holes in their leaves called A) Stomata. B) Egg. C) Gills. D) Lungs. Show Answer Correct Answer: A) Stomata. 4. The range of chemical and physical conditions that must be maintained for populations of a particular species to stay alive and grow, develop, and function normally refers to which of the following terms? A) Ecological niche. B) Range of tolerance. C) Carrying capacity. D) Limiting factor. Show Answer Correct Answer: B) Range of tolerance. 5. What is recombinant DNA? A) DNA which has been changed over generations by natural selection. B) DNA that causes genetic disorders. C) DNA that has been sequenced. D) Adding DNA from one organism into the DNA of another. Show Answer Correct Answer: D) Adding DNA from one organism into the DNA of another. 6. What do you call it when one species benefits while the other species is harmed? A) Predation. B) Commensalism. C) Mutualism. D) Parasitism. Show Answer Correct Answer: D) Parasitism. 7. Which of the following is NOT a feature used to group plants? A) Type of stem. B) Color of flowers. C) Type of movement. D) Height. Show Answer Correct Answer: C) Type of movement. 8. What is one thing both "hot" and "cold" deserts have in common? A) All the land is made of sand. B) Underground water filters impurities from the sand. C) There is a dramatic change between night and day temperatures. D) Both get regular predictable rainfall. Show Answer Correct Answer: C) There is a dramatic change between night and day temperatures. 9. The conversion of ammonium to nitrate is called what? A) Unnitrification. B) Nitrification. C) Denitrification. D) Renitrification. Show Answer Correct Answer: B) Nitrification. 10. Define the term:Competition. A) Competition is the struggle between organisms for the same resources in an ecosystem. B) Competition is the process of animals adapting to cold environments. C) Competition is the process by which plants make their own food using sunlight. D) Competition is the movement of water from the roots to the leaves in plants. Show Answer Correct Answer: A) Competition is the struggle between organisms for the same resources in an ecosystem. 11. The ascending or descending arrangement of taxonomic categories is called as A) Taxonomy. B) Key. C) Classification. D) Hierarchy. Show Answer Correct Answer: D) Hierarchy. 12. The lowest unit of classification is A) Genus. B) Kingdom. C) Species. D) Family. Show Answer Correct Answer: C) Species. 13. Bacteria decomposing waste is an example of what type of ecosystem service? A) Regulating. B) Economic. C) Provisioning. D) Supporting. Show Answer Correct Answer: A) Regulating. 14. Which organisms have the most available energy in an energy pyramid? A) Consumers. B) Decomposers. C) Producers. D) Detritivores. Show Answer Correct Answer: C) Producers. 15. ..... is the lowest level of organisation. A) Tissue. B) Organ. C) Organ system. D) Cellular. Show Answer Correct Answer: D) Cellular. 16. What is resource partitioning? A) The process of two species mutually benefiting from each other. B) The process of using resources in different ways, places, or at different times to reduce competition. C) The process of one organism eating another organism. D) The process of two species living in close proximity without any interaction. Show Answer Correct Answer: B) The process of using resources in different ways, places, or at different times to reduce competition. 17. ..... is the lowest level of oraganisation in living kingdoms A) Population. B) Molecular level. C) Cellular level. D) Tissue level. Show Answer Correct Answer: B) Molecular level. 18. Which of the following best describes Alaska's climate? A) Dry desert conditions with little snowfall. B) Warm year-round with high humidity. C) Hot summers and mild winters with frequent rainfall. D) Cold winters and cool summers with long periods of darkness. Show Answer Correct Answer: D) Cold winters and cool summers with long periods of darkness. 19. The transition from one type of habitat or ecosystem to another, such as the transition from a forest to a grassland. A) Ecology. B) Ecotone. C) Niche. D) Ecological footprint. Show Answer Correct Answer: B) Ecotone. 20. Which is a human cause of desertification? A) Over multiplication. B) Over cultivation. C) Over simplification. D) Over desertification. Show Answer Correct Answer: B) Over cultivation. 21. Genetic diversity A) Measurement of different species in a given area to describe an ecosystem (synonym for species diversity). B) The range of genetic material present in a gene pool or population of a species. C) The range of conditions in which a species can survive. D) Variety of habitats, living communities, and ecological processes in the living world. Show Answer Correct Answer: B) The range of genetic material present in a gene pool or population of a species. 22. Which of the following is NOT a conservation strategy? A) Sediment control pond. B) Crop harvesting. C) Critical area planting. D) None of the above. Show Answer Correct Answer: B) Crop harvesting. 23. Cows eat grass to obtain energy. This is an example of ..... A) Mutualism. B) Competition. C) Predation. D) Commensalism. Show Answer Correct Answer: C) Predation. 24. Which organism is eukaryotic, heterotrophic and multicellular? A) Bacteria. B) Plant. C) Archaea. D) Animal. Show Answer Correct Answer: D) Animal. 25. Among the energy values or nutrients, 9.3 calories is that of A) Vitamins. B) Carbohydrates. C) Proteins. D) Fats. Show Answer Correct Answer: D) Fats. 26. Members of a species who live in the same area and can reproduce to make offspring A) Community. B) Biodiversity. C) Ecosystem. D) Population. Show Answer Correct Answer: D) Population. 27. Separation of species or populations so that they cannot interbreed and produce fertile offspring A) Primary succession. B) Background extinction. C) Reproductive isolation. D) Genetic diversity. Show Answer Correct Answer: C) Reproductive isolation. 28. After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area? A) Grasses $\rightarrow$ Lichens $\rightarrow$ Shrubs $\rightarrow$ Trees. B) Lichens $\rightarrow$ Grasses $\rightarrow$ Shrubs $\rightarrow$ Trees. C) Lichens $\rightarrow$ tree $\rightarrow$ shrubs$\rightarrow$Grasses. D) Lichens $\rightarrow$ Shrubs $\rightarrow$ Grasses $\rightarrow$ Trees. Show Answer Correct Answer: B) Lichens $\rightarrow$ Grasses $\rightarrow$ Shrubs $\rightarrow$ Trees. 29. An ecosystem is a location on Earth that includes A) Only biotic components. B) Only abiotic components. C) Interacting biotic and abiotic components. D) Positive and negative feedback loops. Show Answer Correct Answer: C) Interacting biotic and abiotic components. 30. Which is not used to reduce risks of Desertification? A) Zai pits. B) Zi pits. C) Planting of trees. D) Magic stones. E) Soil management. Show Answer Correct Answer: B) Zi pits. 31. Which of the following plants is very sensitive such that a touch will make them close up very quickly? A) Sesbenia. B) Tamarind Plant. C) Mimosa. D) Albesia. Show Answer Correct Answer: C) Mimosa. 32. Who wrote " Species Plantarum" and provided a basis for the classification of plants? A) Charles Darwin. B) Carolus Linnaeus. C) Robert Hooke. D) Leeuwenhoek. Show Answer Correct Answer: B) Carolus Linnaeus. 33. What percentage of the Earth's fresh water is available for drinking? A) 15%. B) <1%. C) 10%. D) 3%. Show Answer Correct Answer: B) <1%. 34. What is a climax community? A) A temporary ecological community that changes frequently over time. B) A stable and mature ecological community that undergoes little change in species composition over time. C) A community that is dominated by invasive species and lacks biodiversity. D) A community that is in the early stages of ecological succession. Show Answer Correct Answer: B) A stable and mature ecological community that undergoes little change in species composition over time. 35. How much rainfall does a Tropical Rainforest get a month? A) Below 50mm. B) 250mm. C) Below 100mm. D) Over 250mm. E) 200mm. Show Answer Correct Answer: D) Over 250mm. 36. Describes the amount of diversity within the gene pool of a species ..... A) Genetic diversity. B) Species diversity. C) Habitat diversity. D) None of the above. Show Answer Correct Answer: A) Genetic diversity. 37. What is one way that people add Nitrogen into the environment? A) By littering. B) By using fertilizer on farms. C) By burning fossil fuels. D) None of the above. Show Answer Correct Answer: B) By using fertilizer on farms. 38. In majority of higher animals and plants, ..... and ..... are mutually exclusive events. A) Reproduction; consciousness. B) Nutrition; consciousness. C) Growth; nutrition. D) Growth; reproduction. Show Answer Correct Answer: D) Growth; reproduction. 39. Man and housefly have same A) Division. B) Class. C) Kingdom. D) Phylum. Show Answer Correct Answer: C) Kingdom. 40. What is an animal habitat? A) What animals eat. B) Where animals swim. C) A natural home or environment of an animal. D) None of the above. Show Answer Correct Answer: C) A natural home or environment of an animal. 41. Which biome can be found between the equator and the Tropic of Cancer? A) Deciduous forest. B) Tundra. C) Grasslands. D) Tropical rainforest. Show Answer Correct Answer: D) Tropical rainforest. 42. Which ofthe following taxonomic aid provides information for the identification of names of species found in an area? A) Manual. B) Flora. C) Periodical. D) Monograph. Show Answer Correct Answer: A) Manual. 43. Match the following sets:a) Family i) Tuberosum b) Kingdom ii) Polymoniales c) Order iii) Solanum d) Species iv) Plantae e) Genus v) Solanaceae A) I-e ; ii-c ; iii-b ; iv-a ; v-d. B) I-d ; ii-c ; iii-e ; iv-b ; v-a. C) I-e ; ii-d ; iii-b ; iv-a ; v-c. D) I-d ; ii-e ; iii-b ; iv-a ; v-c. Show Answer Correct Answer: B) I-d ; ii-c ; iii-e ; iv-b ; v-a. 44. Which of the following is a primary producer in an aquatic food chain? A) Zooplankton. B) Phytoplankton. C) Herbivorous zooplankton. D) Baleen whale. Show Answer Correct Answer: B) Phytoplankton. 45. What is the process called that changes atmospheric nitrogen into compounds that are usable by living things? A) Photosynthesis. B) Respiration. C) Nitrogen fixation. D) Nitrogen breaking. Show Answer Correct Answer: C) Nitrogen fixation. 46. ..... productivity = the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration). A) Secondary. B) Net. C) Primary. D) Gross. Show Answer Correct Answer: B) Net. 47. The tropical rain forest & tropical savanna biomes are similar in ..... , but ..... A) Temperature / the savannah doesn't receive enough rainfall to be a forest. B) Precipitation / the rain forest is hotter. C) Precipitation / the savanna is cooler. D) Temperature / the rain forest doesn't receive enough sunlight to be a savanna. Show Answer Correct Answer: A) Temperature / the savannah doesn't receive enough rainfall to be a forest. 48. A relationship between two species in which both species benefit A) Parasitism. B) Mutualism. C) Bottleneck effect. D) Commensalism. Show Answer Correct Answer: B) Mutualism. 49. Define the term:Mutualism. A) Mutualism is a symbiotic relationship where both organisms benefit. B) Mutualism is a relationship where one organism benefits and the other is harmed. C) Mutualism is a relationship where one organism benefits and the other is unaffected. D) Mutualism is a competitive relationship where both organisms are harmed. Show Answer Correct Answer: A) Mutualism is a symbiotic relationship where both organisms benefit. 50. Fill in the blank:A ..... is an area especially rich in plant species that is found nowhere else and is in great danger of extinction. Such areas suffer serious ecological disruption, mostly because of rapid human population growth and the resulting pressure on natural resources. A) Biodiversity hotspot. B) Rainforest. C) Desert biome. D) Tundra region. Show Answer Correct Answer: A) Biodiversity hotspot. 51. The scientific term for biological classification categories is the: A) Taxon. B) Species. C) Domain. D) Phylum. Show Answer Correct Answer: A) Taxon. 52. Can you identify the correct sequence of taxonomical categories? A) Genus-Species-Order Kingdom. B) Species-Genus-phylum-order. C) Species-Order-Phylum-Kingdom. D) Species-Genus-Order-Phylum. Show Answer Correct Answer: D) Species-Genus-Order-Phylum. 53. Which is another term for selective breeding? A) Artificial selection. B) Natural Selection. C) Intelligent selection. D) None of the above. Show Answer Correct Answer: A) Artificial selection. 54. What are pioneer species? A) Species that only thrive in aquatic environments. B) Organisms that are the last to colonize an ecosystem. C) The first organisms to colonize previously disrupted or damaged ecosystems. D) Plants that grow in extreme conditions like deserts. Show Answer Correct Answer: C) The first organisms to colonize previously disrupted or damaged ecosystems. 55. A species who is extremely important and vital to an ecosystem (it may not be the biggest in number) A) Keystone species. B) Invasive species. C) Dominant species. D) Alien species. Show Answer Correct Answer: A) Keystone species. 56. The biological concept of species is mainly based on- A) Morphological features. B) Morphology and method of reproduction. C) Method of reproduction only. D) Reproductive isolation. Show Answer Correct Answer: D) Reproductive isolation. 57. What is an organism that has similar characteristics and can reproduce? A) Embryology. B) Organism. C) Species. D) Vestigial. Show Answer Correct Answer: C) Species. 58. What are the two methods of reproduction by Amoeba? A) Fermentation and Diffusion. B) Nitrogen Fixation and Nitrification. C) Binary Fission and Multiple Fission. D) None of the above. Show Answer Correct Answer: C) Binary Fission and Multiple Fission. 59. The number of different species in a community A) Relative abundance. B) Range of tolerance. C) Species diversity. D) Species richness. Show Answer Correct Answer: D) Species richness. 60. This is released by the weathering of rocks. A) Nitrogen. B) Phosphorus. C) Oxygen. D) Carbon. Show Answer Correct Answer: B) Phosphorus. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 1 The Living World Quiz 1Class 11 Biology Chapter 1 The Living World Quiz 2Class 11 Biology Chapter 1 The Living World Quiz 3Class 11 Biology Chapter 1 The Living World Quiz 4Class 11 Biology Chapter 1 The Living World Quiz 5Class 11 Biology Chapter 1 The Living World Quiz 6Class 11 Biology Chapter 1 The Living World Quiz 7Class 11 Biology Chapter 1 The Living World Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books