This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 1 The Living World – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 1 The Living World Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the role of trees in biodiversity? A) They provide food and shelter to birds and animals. B) They are used for making furniture. C) They do not play any role. D) They only produce oxygen. Show Answer Correct Answer: A) They provide food and shelter to birds and animals. 2. When energy is transferred from one level of the food chain to the next, 10% is always lost. This is called: A) Exponential growth. B) Trophic efficiency. C) Bioaccumulation. D) Fermentation. Show Answer Correct Answer: B) Trophic efficiency. 3. A snake that eats a frog that has eaten an insect that fed on a plant is considered a- A) First-level producer. B) Third-level consumer. C) Second-level producer. D) First-level consumer. Show Answer Correct Answer: B) Third-level consumer. 4. The tropics are an example of this place; where there is a great variety of different species A) Biodiversity hotspot. B) Hydrosphere. C) Terrestrial ecosystem. D) Community. Show Answer Correct Answer: A) Biodiversity hotspot. 5. What is the function of the limbs of animals? A) Absorb water and nutrients. B) Carry out photosynthesis. C) Provide support for their bodies. D) Allow them to move. Show Answer Correct Answer: D) Allow them to move. 6. Define reproduction A) External division is called reproduction. B) The ability of an organism to produce progeny more or less similar to itself is called reproduction. C) Ability to produce different species chemically. D) All of the above. Show Answer Correct Answer: B) The ability of an organism to produce progeny more or less similar to itself is called reproduction. 7. Where would you expect to find a bioluminescent organism? A) In the aphotic or benthic zone of the ocean. B) In the photic zone of the ocean. C) In the disphotic zone of the ocean. D) None of the above. Show Answer Correct Answer: A) In the aphotic or benthic zone of the ocean. 8. What happens to biodiversity when habitats are damaged? A) It increases. B) It becomes more diverse. C) It remains the same. D) It decreases. Show Answer Correct Answer: D) It decreases. 9. Name the levels of an ecosystem in order from smallest to largest. A) Ecosystem, population, organism, community. B) Organism, population, community, ecosystem. C) Ecosystem, community, population, organism. D) Community, organism, population, ecosystem. Show Answer Correct Answer: B) Organism, population, community, ecosystem. 10. New species that have not been there before, is introduced into an ecosystem A) Non-native species. B) Competitive exclusion principle. C) Bottle neck effect. D) Range of tolerance. Show Answer Correct Answer: A) Non-native species. 11. Members of which kingdom never have a cell wall? A) Animalia. B) Archaebacteria. C) Protista. D) Plantae. Show Answer Correct Answer: A) Animalia. 12. The carbon in coal, oil, and natural gas came from A) Carbon-fixing bacteria in swamp soil. B) The remains of dead organisms. C) Carbon dioxide dissolved in ocean water. D) The combustion of fossil fuels. Show Answer Correct Answer: B) The remains of dead organisms. 13. PROTEOBACTERIA ARE A) BACTERIA. B) GRAM POSITIVE BACTERIA. C) MOST GRAM NEGATIVE BACTERIA. D) NONE. Show Answer Correct Answer: C) MOST GRAM NEGATIVE BACTERIA. 14. When an animal dies, the once-living matter from the animal's body ..... A) Regenerates so the animal can live again. B) Is broken down and passes into the soil and air. C) Remains exactly the same for millions of years. D) Disintegrates into small particles that eventually disappear. Show Answer Correct Answer: B) Is broken down and passes into the soil and air. 15. What are the characteristics of a stratified society? A) Characteristics of a stratified society include social hierarchy, unequal resource distribution, distinct social classes, and ranking based on factors like wealth and power. B) Uniform distribution of resources. C) Absence of social classes. D) Complete equality among all members. Show Answer Correct Answer: A) Characteristics of a stratified society include social hierarchy, unequal resource distribution, distinct social classes, and ranking based on factors like wealth and power. 16. ..... a biological process in which a small group of a larger population establishes a new, isolated population, and the new group's gene pool has a different allele frequency than the original population due to the founder's specific genetic makeup. A) Natural selection. B) Genetic drift. C) Founder effect. D) Gene flow. Show Answer Correct Answer: C) Founder effect. 17. Fill in the blank: ..... is the removal of trees from a forested area. A) Photosynthesis. B) Afforestation. C) Erosion. D) Deforestation. Show Answer Correct Answer: D) Deforestation. 18. ..... is the study of the relationships between living organisms, including humans, and their physical environment; it seeks to understand the vital connections between plants and animals and the world around them. A) Biology. B) Habitat. C) Ecology. D) Ecosystem. Show Answer Correct Answer: C) Ecology. 19. The nutrients layer in the rainforest is ..... ? A) High in nutrients and deep down. B) Thick nutrients layer. C) No nutrient layer. D) Thin and low in nutrients Option 4 (optional). Show Answer Correct Answer: D) Thin and low in nutrients Option 4 (optional). 20. An ecosystem contains A) Only one species. B) Multiple species. C) Living and non-living components. D) All the similar biomes across the world. Show Answer Correct Answer: C) Living and non-living components. 21. ..... is the process by which water vapor in the air is changed into liquid water ..... is crucial to the water cycle because it is responsible for the formation of clouds. A) Transportation. B) Plant Uptake. C) Condensation. D) Percolation. Show Answer Correct Answer: C) Condensation. 22. 'Aves' taxonomically represent a A) Family. B) Order. C) Class. D) Phylum. Show Answer Correct Answer: C) Class. 23. An organism that does not show locomotion: A) Butterfly. B) Mango Tree. C) Elephant. D) Sea anemone. Show Answer Correct Answer: D) Sea anemone. 24. What does a biomass pyramid compare? A) The amount of individuals at each trophic level. B) The amount of biomass at each trophic level. C) The amount of energy available at each trophic level. D) The amount of biomass consumed at each trophic level. Show Answer Correct Answer: B) The amount of biomass at each trophic level. 25. Tree planting can reduce desertification by ..... A) Giving more wood for people to use as fuel. B) Allows the soil to be baked by the sun and then eroded. C) People can tap into the plants and drink fresh water. D) The roots hold the soil together and they act as windbreaks. Show Answer Correct Answer: D) The roots hold the soil together and they act as windbreaks. 26. What is formed during primary succession that doesn't need to be formed during secondary succession? A) Climax community. B) Soil. C) Pioneer species. D) Lichens. Show Answer Correct Answer: B) Soil. 27. Measurement of different species in a given area to describe an ecosystem (synonym for species diversity) A) Ecosystem diversity. B) Species richness. C) Species diversity. D) Species evenness. Show Answer Correct Answer: C) Species diversity. 28. Fill in the blank:A ..... is a community of plants, animals and fungi which, through the process of ecological succession in the development of vegetation in an area over time, have reached a steady state. A) Climax community. B) Invasive species. C) Secondary consumer. D) Pioneer species. Show Answer Correct Answer: A) Climax community. 29. ..... is the smallest taxon A) Species. B) Class. C) Order. D) Kingdom. Show Answer Correct Answer: A) Species. 30. The term phylum was given by A) Ernst Haeckel. B) Gregor Mendel. C) Carl Linnaeus. D) Charles Darwin. Show Answer Correct Answer: A) Ernst Haeckel. 31. Who was awarded the three prizes ; the triple crown of biology;theBalzanprize, the international prize for biology, theCrafoord prize? A) Linnaeus. B) Ernst Mayr. C) A P Decandolle. D) Adolf Mayer. Show Answer Correct Answer: B) Ernst Mayr. 32. Mangroves develop aerial roots.This is an adaptation to the ..... A) Type of soil. B) Temperature. C) Amount of rain. D) Fresh water availability. Show Answer Correct Answer: A) Type of soil. 33. Study the following statements and select the correct ones.i) Herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets.ii) Flora provides the index to the plant species found in a particular area.iii) Monographs contain information about particular taxon. A) (i) and (ii) only. B) (ii) and (iii) only. C) (i) and (iii) only. D) (i), (ii) and (iii). Show Answer Correct Answer: D) (i), (ii) and (iii). 34. The tallest layer of the rainforest is called ..... ? A) Ameargent. B) Emergency. C) Amergent. D) Emergent. Show Answer Correct Answer: D) Emergent. 35. The scientific name of mango is A) Malus domestica. B) Mangifera indica. C) Citrus reticulata. D) Prunus persica. Show Answer Correct Answer: B) Mangifera indica. 36. What is the correct definition of Desertification? A) The cutting down and removal of forests. B) The process by which land becomes dry as a result of climate change and human activity. C) The decline of a country's traditional manufacturing industry due to exhaustion of raw materials. D) A long term change in the Earth's climate, mainky due to an increase in temperature. E) Two plates slide along each other in the same, or different direction. Show Answer Correct Answer: B) The process by which land becomes dry as a result of climate change and human activity. 37. The symbiosis that is beneficial to both organisms involved. A) Parasitism. B) Predation. C) Mutualism. D) Competition. Show Answer Correct Answer: C) Mutualism. 38. What word describes a trait that helps an organism survive in its environment? A) Mutation. B) Adaptation. C) Camouflage. D) Natural selection. Show Answer Correct Answer: B) Adaptation. 39. Which of the following taxa are in their increasing order of their similarities? A) Specific epithet, Phylum, Genus. B) Class, Phylum, Kingdom. C) Kingdom, Genus, Specific epithet. D) Genus, Kingdom, Phylum. Show Answer Correct Answer: C) Kingdom, Genus, Specific epithet. 40. Which of the following statements best describes how the fossil record shows evidence for evolution? A) The fossil record shows the remains or traces of ancient life forms. B) Fossils exist all over the world. C) When an animal dies, its body can be covered up and preserved by layers of rock and earth, forming a fossil. D) By studying, dating, and analyzing fossils, we can learn how living creatures changed over time. Show Answer Correct Answer: D) By studying, dating, and analyzing fossils, we can learn how living creatures changed over time. 41. What type of root does a mustard plant have? A) Weak roots. B) Fibrous root. C) No roots. D) Taproot. Show Answer Correct Answer: D) Taproot. 42. In some areas, farmer's rotate the order of crops planted in fields each year. Why? A) To maintain nitrogen levels in soil. B) To prevent erosion. C) All the above. D) None of the above. Show Answer Correct Answer: A) To maintain nitrogen levels in soil. 43. The range of conditions in which a species can survive A) Ecological tolerance. B) Ecological restoration. C) Range of tolerance. D) Genetic diversity. Show Answer Correct Answer: A) Ecological tolerance. 44. Methanogens, a type of archaebacteria, are commonly found: A) In hot springs. B) In the gut of ruminants. C) In highly acidic soils. D) In shallow freshwater ponds. Show Answer Correct Answer: B) In the gut of ruminants. 45. Ecological succession on an area that lacks any vegetation or soil is called: A) Deflection succession. B) Secondary succession. C) Gap regeneration. D) Primary succession. Show Answer Correct Answer: D) Primary succession. 46. What is the best way to define the characteristics of desert soils? A) Nutrient rich, large leaf litter, impermeable. B) Sandy, lots of organic matter, impermeable. C) Infertile, little organic matter, drains quickly. D) Impermeable, nutrient rich, sandy. Show Answer Correct Answer: C) Infertile, little organic matter, drains quickly. 47. A PAIR OF CONTRASTING STATEMENT IS CALLED A) HERBARIUM. B) LEAD. C) COUPLET. D) KEY. Show Answer Correct Answer: C) COUPLET. 48. This biome has very little rainfall, also extremely cold temperatures for most of the year, and frozen soil makes ponds form. A) Deciduous forest. B) Tundra. C) Rain forest. D) Grassland. Show Answer Correct Answer: B) Tundra. 49. What is the home of a bird? A) Kennel. B) Ocean. C) Burrow. D) Nest. Show Answer Correct Answer: D) Nest. 50. This type of aquatic ecosystem is a mix of fresh and salt water. A) Estuary. B) Lake. C) River. D) None of the above. Show Answer Correct Answer: A) Estuary. 51. How are organisms classified into kingdoms? A) Organisms are grouped into kingdoms based on their size and color. B) Organisms are categorized into kingdoms according to their lifespan and mobility. C) Organisms are classified into kingdoms based on shared characteristics and genetic relationships. D) Organisms are classified into kingdoms by their habitat and diet. Show Answer Correct Answer: C) Organisms are classified into kingdoms based on shared characteristics and genetic relationships. 52. How do Fish breath A) Nostrills. B) Nose. C) Gills. D) Skin. Show Answer Correct Answer: C) Gills. 53. One of the following things cannot move by itself. This one is: A) Bicycle. B) Bird. C) Plant. D) Worm. Show Answer Correct Answer: A) Bicycle. 54. COMPETITION is an important part of how species interact because they need to fight for limited resources in an environment to survive and reproduce. Some species avoid competition by finding ways to share resources through a finding a NICHE. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. This rate of reaction can be measured in the dark by determining the amount of oxygen gas consumed in a period of time. A) Cellular respiration. B) Photosynthesis. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cellular respiration. 56. Ecological tolerance is A) The relationship in which two species live close together. B) Series of gradual changes that occur in a community following a disturbance. C) The range of abiotic conditions that an organism or species is able to survive in. D) Any living environmental factor such a predation or competition for food. Show Answer Correct Answer: C) The range of abiotic conditions that an organism or species is able to survive in. 57. Many organisms donot reproduce like A) Mule, worker honey bee. B) Hinny. C) Infertile human couples. D) All above are correct. Show Answer Correct Answer: D) All above are correct. 58. Which of the following is NOT considered to be a natural disruption to an ecosystem? A) Earthquake. B) Hurricane. C) Air pollution. D) Volcanic eruption. Show Answer Correct Answer: C) Air pollution. 59. The major abiotic factors that influence aquatic ecosystems include A) Water temperature and amount of light. B) Plants and animals. C) Water and plants growing there. D) None of the above. Show Answer Correct Answer: A) Water temperature and amount of light. 60. Related genera belong to the same A) Variety. B) Breed. C) Species. D) Family. Show Answer Correct Answer: D) Family. ← 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 7Class 11 Biology Chapter 1 The Living World Quiz 8Class 11 Biology Chapter 1 The Living World Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books