This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 1 The Living World – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 1 The Living World Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A set of alternate characters that help in identification of a plant or animal by selecting or eliminating a characteristic is known as A) Classification key. B) Systematics key. C) Taxonomic key. D) None of the above. Show Answer Correct Answer: C) Taxonomic key. 2. The ultimate source of energy for terrestrial ecosystem is A) Nutrients in vegetation. B) Producers. C) Nutrients in soil. D) Primary consumers. E) Sun. Show Answer Correct Answer: E) Sun. 3. Panthera pardus refers to A) Lion. B) Tiger. C) Leopard. D) None of the above. Show Answer Correct Answer: C) Leopard. 4. An ecological succession in areas in which natural vegetation has been removed or destroyed but the soil or bottom sediment has not been destroyed is called ..... ? A) Secondary succession. B) Primary succession. C) Ecological niche. D) Climax community. Show Answer Correct Answer: A) Secondary succession. 5. The term biology was introduced by A) Aristotle. B) Darwin. C) Lamarck and Treviranus. D) Linnaeus. Show Answer Correct Answer: C) Lamarck and Treviranus. 6. The taxonomical aids used for collections of living plants for reference is A) ( c) taxon. B) ( b) Botanical Gardens. C) (a) Museum. D) ( d) Herbarium. Show Answer Correct Answer: B) ( b) Botanical Gardens. 7. The current trend where some species of bacteria have become resistant to antibiotics is best described as A) Speciation. B) Genetic diversity. C) Extinction. D) Microevolution. Show Answer Correct Answer: D) Microevolution. 8. The development of new types of organisms from preexisting types of organisms over time. A) Evolution. B) Natural Selection. C) All the above. D) None of the above. Show Answer Correct Answer: A) Evolution. 9. What is our cold environments case study? A) The Arctic. B) Svalbard. C) Alaska. D) The Antarctic. Show Answer Correct Answer: B) Svalbard. 10. Define the term:Ecology. A) Ecology is the study of interactions between organisms and their environment. B) Ecology is the study of chemical reactions in the body. C) Ecology is the study of the structure of atoms. D) Ecology is the study of historical events. Show Answer Correct Answer: A) Ecology is the study of interactions between organisms and their environment. 11. The suffix that denotes the taxonomic category 'Family' in plants would be A) -aceae. B) -ae. C) -ales. D) -nae. Show Answer Correct Answer: A) -aceae. 12. Which is an abiotic factor that most limits the number of frogs living in a pond? A) The populations of producers. B) The color of the water. C) The number of predators. D) The temperature of the water. Show Answer Correct Answer: D) The temperature of the water. 13. Obtain energy from chemicals A) Denitrification. B) Chemotrophs. C) Biotic factors. D) Aerobic. Show Answer Correct Answer: B) Chemotrophs. 14. What are the 4 things that living things need to survive? A) Air, food, protection, love. B) Protection, water, meat, plants. C) Love, protection, air, space. D) Food, water, space, air. Show Answer Correct Answer: D) Food, water, space, air. 15. How many seed are formed by 40 meiotic divisions. A) 32. B) 16. C) 80. D) 18. Show Answer Correct Answer: A) 32. 16. Taste buds for bitter taste are found ontongue at A) Tip. B) Posterior part. C) Lateral sides. D) On basal surface. Show Answer Correct Answer: B) Posterior part. 17. 97% of the water on earth exists as A) Saltwater. B) Lakes and Rivers. C) Groundwater. D) Water Vapor. Show Answer Correct Answer: A) Saltwater. 18. Nitrogen compounds are converted back into atmospheric N$_{2}$ by bacteria and burning of fossil fuels through this process A) Nitrogen fixation. B) Ammonification. C) Nitrification. D) Dentrification. Show Answer Correct Answer: D) Dentrification. 19. This relationship involves one species benefitting while harming the other one negatively A) Mutualism. B) Commensalism. C) Parasitism. D) Symbiosis. Show Answer Correct Answer: C) Parasitism. 20. A group of closely related genera is called a A) Family. B) Genera. C) Kingdom. D) Species. Show Answer Correct Answer: A) Family. 21. Why does photosynthesis not occur in the deep ocean? A) Excess sunlight. B) Sunlight does not penetrate. C) Low oxygen levels. D) Lack of nutrients. Show Answer Correct Answer: B) Sunlight does not penetrate. 22. Which set of organisms multiply by fragmentation? A) Amoeba, Hydra, bacteria. B) Fungi, filamentous algae, protonema of mosses. C) Earthworm, fungi, bacteria. D) Earthworm, Amoeba, fungi(b). Show Answer Correct Answer: B) Fungi, filamentous algae, protonema of mosses. 23. Two friends are eating together on a diningtable. One of them suddenly starts coughingwhile swallowin some food. This coughingwould have been due to improper movementof A) Neck. B) Epiglottis. C) Tongue. D) Diaphragm. Show Answer Correct Answer: B) Epiglottis. 24. The biome with the largest reservoir of nitrogen in the soil is: A) Savana. B) Taiga. C) Tropical Rainforests. D) Temperate forests. Show Answer Correct Answer: D) Temperate forests. 25. What is a change brought about by a physical, chemical, or biological agent that impacts population size or community structure? A) Disturbance. B) Resilience. C) Stability. D) Resistance. Show Answer Correct Answer: A) Disturbance. 26. Bottleneck effect A) The number and relative abundance of species in a biological community. B) A design in which researchers manipulate an independent variable and measure a dependent variable to determine a cause-and-effect relationship. C) A reduction in the genetic diversity of a population caused by a reduction in its size. D) Information describing color, odor, shape, or some other physical characteristic. Show Answer Correct Answer: C) A reduction in the genetic diversity of a population caused by a reduction in its size. 27. Eutrophication is caused by A) Runoff of excessive fertilizer and nutrients. B) Using nuclear energy. C) Cleaning up waterways. D) Using solar energy. Show Answer Correct Answer: A) Runoff of excessive fertilizer and nutrients. 28. Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while Species B feeds on caterpillars. The two species coexist successfully because A) They interbreed. B) Each occupies a different niche. C) Birds compete for food. D) They use different methods of reproduction. Show Answer Correct Answer: B) Each occupies a different niche. 29. The tropical savanna & temperate grassland are both types of grasslands. What differentiates them is the fact that A) The savanna is hotter. B) The savanna is cooler. C) The grassland is hotter. D) The grassland receives much more precipitation. Show Answer Correct Answer: A) The savanna is hotter. 30. Systematics is:- A) Characterization, identification, nomenclature, classification and evolutionary history also. B) Characterization, identification, nomenclature and classification. C) Nomenclature, classification and evolutionary history also. D) Characterization, identification, nomenclature. Show Answer Correct Answer: A) Characterization, identification, nomenclature, classification and evolutionary history also. 31. Which feature is NOT used to group animals? A) The color of their eyes. B) The place they live. C) The way they move. D) The food they eat. Show Answer Correct Answer: A) The color of their eyes. 32. When humans EXHALE, we release ..... A) Oxygen. B) Nitrogen. C) Water. D) Carbon Dioxide. Show Answer Correct Answer: D) Carbon Dioxide. 33. Organisms have the ability to grow in extreme conditions like volcano vents, hot springs and polar ice caps are called ..... A) Methanogens. B) Halophiles. C) Pathogens. D) Thermophiles. Show Answer Correct Answer: D) Thermophiles. 34. Corvus splendens splendens is the scientific name of Indian crow, it represents A) Autonyms. B) Binomial nomenclature. C) Tautonyms. D) Synonyms. Show Answer Correct Answer: A) Autonyms. 35. Ecosystems never change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 36. What do you call it when one species benefits AND the other species benefits? A) Parasitism. B) Commensalism. C) Mutualism. D) Predation. Show Answer Correct Answer: C) Mutualism. 37. What % of the air is made of nitrogen? A) 61%. B) 21%. C) 78%. D) 52%. Show Answer Correct Answer: C) 78%. 38. A system formed by the interaction of a community of organisms with their physical environment A) Population. B) Ecosystem service. C) Ecosystem. D) Ecological hierarchy. Show Answer Correct Answer: C) Ecosystem. 39. Who was Janaki Ammal? A) Botanist. B) Physicist. C) Chemist. D) None of the above. Show Answer Correct Answer: A) Botanist. 40. By treating bacteria with radiation or drugs, they can create a ..... mutant/bacterial strain. A) Gregarious. B) Useful. C) Atrocious. D) Detrimental. Show Answer Correct Answer: B) Useful. 41. The scientific name of man( Homo sapiens) is composed of A) Species and genus. B) Species and family. C) Genus and family. D) Genus and species. Show Answer Correct Answer: D) Genus and species. 42. Marine protected areas (MPAs) A) Discrete regions of ocean that are legally protected from various forms of human exploitation. B) Succession following a disturbance that destroys a community without destroying the soil. C) Separation of species or populations so that they cannot interbreed and produce fertile offspring. D) Protected strips of land that allow the migration of organisms from one wilderness area to another. Show Answer Correct Answer: A) Discrete regions of ocean that are legally protected from various forms of human exploitation. 43. Which of the following terms describe humandentition? A) Pleurodont, Monophyodont, Homodont. B) Thecodont, Diphyodont, Heterodont. C) Pleurodont, Diphyodont, Heterodont. D) Thecodont, Diphyodont, Homodont. Show Answer Correct Answer: B) Thecodont, Diphyodont, Heterodont. 44. Choose the correct sequence for energy flow within an ecosystem A) Herbivores $\rightarrow$ producers $\rightarrow$ carnivores $\rightarrow$ scavengers. B) Scavengers$\rightarrow$ carnivores $\rightarrow$ herbivores$\rightarrow$ producers. C) Producers $\rightarrow$ carnivores $\rightarrow$ herbivores$\rightarrow$ carnivores. D) Producers $\rightarrow$ herbivores$\rightarrow$ carnivores $\rightarrow$ decomposers. Show Answer Correct Answer: D) Producers $\rightarrow$ herbivores$\rightarrow$ carnivores $\rightarrow$ decomposers. 45. Mutations are important because they bring about- A) Benefits for the individual, not for the population. B) Genetic variation needed for a population to evolve. C) Hardey-Weinberg equilibrium within a population. D) Death of the organism in which they develop. Show Answer Correct Answer: B) Genetic variation needed for a population to evolve. 46. Approximate efficiency of the conversion of light energy to chemical energy in photosynthesis A) 15%. B) 100%. C) 1%. D) 30%. E) 95%. Show Answer Correct Answer: C) 1%. 47. Rainforests have soil that is nitrogen-poor due to: A) Quick uptake & growth of producers. B) Leaching from continuous precipitation. C) High heat & humidity. D) None of the above. Show Answer Correct Answer: B) Leaching from continuous precipitation. 48. Which plant has parallel venation? A) Monocot. B) Dicot. C) Fern. D) None of the above. Show Answer Correct Answer: A) Monocot. 49. Which of the following statements is correct about frog? A) Frog lay eggs in water. B) Frog lay eggs on land. C) Frog lay eggs on trees. D) Frog does not lay egg. Show Answer Correct Answer: A) Frog lay eggs in water. 50. All the different populations that live together in an area A) Ecological hierarchy. B) Population. C) Ecosystem. D) Community. Show Answer Correct Answer: D) Community. 51. How do plants make their own food? A) By absorbing nutrients from the soil. B) By hunting for prey. C) By photosynthesis. D) By consuming other plants. Show Answer Correct Answer: C) By photosynthesis. 52. How would increasing global temperatures affect terrestrial biomes? A) Deciduous trees would flower later in the year. B) Tropical rainforests would grow closer to the equator. C) Tundras would have less primary productivity. D) The distribution of grasslands and temperate rainforests would increase. Show Answer Correct Answer: D) The distribution of grasslands and temperate rainforests would increase. 53. Who proposed the five kingdom classification? A) Whittaker. B) Linnaeus. C) Copeland. D) Haeckel. Show Answer Correct Answer: A) Whittaker. 54. A biological community of interacting organisms and their physical environment. A) Community. B) Primary succession. C) Ecology. D) Ecosystem. Show Answer Correct Answer: D) Ecosystem. 55. The label of herbarium sheet do not contain any information on A) Classification of plant. B) Height of plant. C) Name of collector. D) Name of plant. Show Answer Correct Answer: B) Height of plant. 56. Which of the following is NOT and ecosystem service? A) Regulating Services. B) Economic Services. C) Cultural Services. D) Provisioning Services. Show Answer Correct Answer: B) Economic Services. 57. All the organisms on earth get their energy directly or indirectly from? A) Water. B) Oxygen. C) The Sun. D) Nitrogen. Show Answer Correct Answer: C) The Sun. 58. Grouping plants and animals helps in: A) Confusing identification. B) Making scientific names. C) Easier understanding and study. D) None of these. Show Answer Correct Answer: C) Easier understanding and study. 59. Animals having many cells are called as? A) Unicellular. B) Multicellular. C) All the above. D) None of the above. Show Answer Correct Answer: B) Multicellular. 60. Which of the following is not a characteristic feature of living organisms A) Growth. B) Respiration. C) Metabolism. D) Unresponsiveness. Show Answer Correct Answer: D) Unresponsiveness. ← 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