Air<\/li>\n<\/ol>\nAnswer: 3. Plants<\/p>\n
Question 29. Global \u2018sink\u2019 for CO2<\/sub> is<\/p>\n\n- Tropical rain forest<\/li>\n
- Mangrove<\/li>\n
- Ocean<\/li>\n
- Coral reef<\/li>\n<\/ol>\n
Answer: 3. Ocean<\/p>\n
Question 30. Which ecosystem has the highest primary productivity?<\/p>\n
\n- Pond<\/li>\n
- Ocean<\/li>\n
- Desert<\/li>\n
- Forest<\/li>\n<\/ol>\n
Answer: 2. Ocean<\/p>\n
Question 31. The most recently discovered ecosystem is\u2014<\/p>\n
\n- Vent*<\/li>\n
- Crater<\/li>\n
- Floating iceberg<\/li>\n
- Coral reef<\/li>\n<\/ol>\n
Answer: 1. Vent*<\/p>\n
Question 32. Niche of a species is\u2014<\/p>\n
\n- Place of living<\/li>\n
- Specific function<\/li>\n
- Habitat and specific function<\/li>\n
- None of these<\/li>\n<\/ol>\n
Answer: 3. Habitat and specific function<\/p>\n
Question 33. Which one of the following is mismatched?<\/p>\n
\n- Deciduous forest: Shorea robusta<\/li>\n
- Evergreen forest: Pinus roxburghii<\/li>\n
- Xeric forest: Musa paradisica<\/li>\n
- Mangrove forest: Barringtonia acutangula<\/li>\n<\/ol>\n
Answer: 3. Xeric forest: Musa paradisica<\/p>\n
Question 34. Insectivorous plants are\u2014<\/p>\n
\n- Organotrophs<\/li>\n
- Autotrophs<\/li>\n
- Heterotrophs<\/li>\n
- Partial heterotrophs<\/li>\n<\/ol>\n
Answer: 4. Partial heterotrophs<\/p>\n
Question 35. Which of the following levels is not studied in synecology?<\/p>\n
\n- Individual level<\/li>\n
- Population level<\/li>\n
- Community level<\/li>\n
- Ecological level<\/li>\n<\/ol>\n
Answer: 1. Individual level<\/p>\n
Question 36. In ecology, interaction and organization among different organisms is studied in steps.<\/p>\n
\n- 2<\/li>\n
- 3<\/li>\n
- 4<\/li>\n
- 5<\/li>\n<\/ol>\n
Answer: 3. 4<\/p>\n
Question 37. Which of the following is a long day plant?<\/p>\n
\n- pea<\/li>\n
- Cosmos<\/li>\n
- Strawberry<\/li>\n
- Dahlia<\/li>\n<\/ol>\n
Answer: 1. pea<\/p>\n
Question 38. Which of the following is a short day plant?<\/p>\n
\n- Pea<\/li>\n
- Dahlia<\/li>\n
- Clover<\/li>\n
- Radish<\/li>\n<\/ol>\n
Answer: 2. Dahlia<\/p>\n
Question 39. Chlorophyll synthesis in plants is regulated by\u2014<\/p>\n
\n- Humidity<\/li>\n
- Wind<\/li>\n
- Temperature<\/li>\n
- Light<\/li>\n<\/ol>\n
Answer: 4. Light<\/p>\n
Question 40. Melanin formation in human skin is regulated by\u2014<\/p>\n
\n- Humidity<\/li>\n
- Light<\/li>\n
- Temperature<\/li>\n
- Pressure<\/li>\n<\/ol>\n
Answer: 2. Light<\/p>\n
Question 41. Migration of salmon, eel fish is regulated by\u2014<\/p>\n
\n- Water<\/li>\n
- Humidity<\/li>\n
- Temperature.<\/li>\n
- Light<\/li>\n<\/ol>\n
Answer: 3. Temperature.<\/p>\n
Question 42. Temperature affects the size of an organism. This is known as\u2014<\/p>\n
\n- Bergmann’s rule<\/li>\n
- Gloger’s rule<\/li>\n
- Allen’s rule<\/li>\n
- Lindeman’s law<\/li>\n<\/ol>\n
Answer: 1. Bergmann’s rule<\/p>\n
Question 43. Higher humidity makes the body colour of animals darker. This is known as\u2014<\/p>\n
\n- Bergmann’s rule<\/li>\n
- Gloger’s rule<\/li>\n
- Allen’s rule<\/li>\n
- Lindeman’s law<\/li>\n<\/ol>\n
Answer: 2. Gloger’s rule<\/p>\n
Question 44. Animals of polar region have smaller pina, tail and limbs. This is known as\u2014<\/p>\n
\n- Bergmann’s rule<\/li>\n
- Gloger’s rule<\/li>\n
- Allen\u2019s rule<\/li>\n
- Lindeman’s law<\/li>\n<\/ol>\n
Answer: 3. Allen\u2019s rule<\/p>\n
Question 45. The physiological reaction of organisms depending upon the length of day or night, is called\u2014<\/p>\n
\n- Photosynthesis<\/li>\n
- Photoperiodism<\/li>\n
- Photorespiration<\/li>\n
- None of these<\/li>\n<\/ol>\n
Answer: 2. Photoperiodism<\/p>\n
Question 46. The act of leaving one\u2019s native place permanently with the intent to reside somewhere else, is called\u2014<\/p>\n
\n- Adaptation<\/li>\n
- Immigration<\/li>\n
- Emigration<\/li>\n
- Extinction<\/li>\n<\/ol>\n
Answer: 3. Emigration<\/p>\n
Question 47. Example of l+ O\u2019 interaction is\u2014<\/p>\n
\n- Autotrophism<\/li>\n
- Mutualism<\/li>\n
- Parasitism<\/li>\n
- Commensalism<\/li>\n<\/ol>\n
Answer: 4. Parasitism<\/p>\n
Question 48. All the plant species of an ecosystem is collectively known as\u2014<\/p>\n
\n- Flora<\/li>\n
- Fauna<\/li>\n
- Biome<\/li>\n
- Biomass<\/li>\n<\/ol>\n
Answer: 1. Flora<\/p>\n
Question 49. All the animal species of an ecosystem is collectively known as\u2014<\/p>\n
\n- Flora<\/li>\n
- Fauna<\/li>\n
- Biome<\/li>\n
- Biomass<\/li>\n<\/ol>\n
Answer: 2. Fauna<\/p>\n
Question 50. Number of trophic levels in a food chain ranges from\u2014<\/p>\n
\n- 14-16<\/li>\n
- 11-13<\/li>\n
- 7-10<\/li>\n
- 3-5<\/li>\n<\/ol>\n
Answer: 4. 3-5<\/p>\n
Question 51. Lindeman law of energy flow through different trophic levels in an ecosystem is also known as\u2014<\/p>\n
\n- 5% law<\/li>\n
- 7% law<\/li>\n
- 10% law<\/li>\n
- 15% law<\/li>\n<\/ol>\n
Answer: 3. 10% law<\/p>\n
Question 52. Which of the following is a grazing food chain?<\/p>\n
\n- Organic matter \u2192 Earthworm \u2192 Bacteria<\/li>\n
- Plant \u2192 Human \u2192 Worm<\/li>\n
- Decaying organic matter \u2192 Zooplankton \u2192 Small fish \u2192 Large fish<\/li>\n
- Grass \u2192 Grasshopper \u2192 Frog \u2192 Snake \u2192 Hawk<\/li>\n<\/ol>\n
Answer: 4. Grass \u2192 Grasshopper \u2192 Frog \u2192 Snake \u2192 Hawk<\/p>\n
Question 53. Actively swimming aquatic organisms in a water body are called\u2014<\/p>\n
\n- Necton<\/li>\n
- Benthos<\/li>\n
- Plankton<\/li>\n
- Neuston<\/li>\n<\/ol>\n
Answer: 1. Necton<\/p>\n
Question 54. Food chain was scientifically described in 1966 by scientist\u2014<\/p>\n
\n- Tansley<\/li>\n
- Lindeman<\/li>\n
- Odum<\/li>\n
- Flaeckel<\/li>\n<\/ol>\n
Answer: 3. Odum<\/p>\n
Question 55. The community of organisms, that reside on or near the seabed is called\u2014<\/p>\n
\n- Necton<\/li>\n
- Plankton<\/li>\n
- Benthos<\/li>\n
- Neuston<\/li>\n<\/ol>\n
Answer: 3. Benthos<\/p>\n
Question 56. The largest consumer population of marine ecosystem belongs to\u2014<\/p>\n
\n- Primary consumer<\/li>\n
- Secondary consumer<\/li>\n
- Tertiary consumer<\/li>\n
- Topmost level of consumers<\/li>\n<\/ol>\n
Answer: 1. Primary consumer<\/p>\n
Question 57. Photoperiodism is a\u2014<\/p>\n
\n- Biochemical process<\/li>\n
- Biophysical process<\/li>\n
- Physiological process<\/li>\n
- All of these<\/li>\n<\/ol>\n
Answer: 3. Physiological process<\/p>\n
Question 58. Man is\u2014<\/p>\n
\n- Autotroph<\/li>\n
- Omnivorous<\/li>\n
- Carnivorous<\/li>\n
- Herbivorous<\/li>\n<\/ol>\n
Answer: 2. Omnivorous<\/p>\n
Question 59. If different trophic levels are piled one upon another, we shall get\u2014<\/p>\n
\n- Food chain<\/li>\n
- Food web<\/li>\n
- Food pyramid<\/li>\n
- Energy pyramid<\/li>\n<\/ol>\n
Answer: 3. Food pyramid<\/p>\n
Question 60. Which of the following is a component of macronutrient cycle?<\/p>\n
\n- Na<\/li>\n
- Mn<\/li>\n
- Cu<\/li>\n
- O2<\/sub><\/li>\n<\/ol>\n
Answer: 4. O2<\/sub><\/p>\nQuestion 61. Which of the following is a component of micronutrient cycle?<\/p>\n
\n- Cu<\/li>\n
- C<\/li>\n
- H2<\/sub><\/li>\n
- O2<\/sub><\/li>\n<\/ol>\n
Answer: 1. Cu<\/p>\n
Question 62. Inhabitance of Anabaena in the leaf tissue of Azolla is an example of\u2014 .<\/p>\n
\n- Competition<\/li>\n
- Predation<\/li>\n
- Symbiosis<\/li>\n
- Commensalism<\/li>\n<\/ol>\n
Answer: 3. Symbiosis<\/p>\n
Question 63. In an interspecific relation, one of the two species is benefited but another one is neither benefited nor harmed. This interaction is called\u2014<\/p>\n
\n- Symbiosis<\/li>\n
- Mutualism<\/li>\n
- Commensalism<\/li>\n
- Parasitism<\/li>\n<\/ol>\n
Answer: 3. Commensalism<\/p>\n
Question 64. Certain bacteria break organic molecules and return elementary components to nature, these, bacteria are treated as\u2014<\/p>\n
\n- Decomposers<\/li>\n
- Putrifying bacteria<\/li>\n
- Transducers<\/li>\n
- Transformers<\/li>\n<\/ol>\n
Answer: 4. Transformers<\/p>\n
Question 65. Unit of a population is\u2014<\/p>\n
\n- A community<\/li>\n
- An animal species<\/li>\n
- A plant species<\/li>\n
- An individual of a species<\/li>\n<\/ol>\n
Answer: 4. An individual of a species<\/p>\n
Question 66. Unit of a community is\u2014<\/p>\n
\n- An individual of a species<\/li>\n
- A plant species<\/li>\n
- An animal species<\/li>\n
- A Population<\/li>\n<\/ol>\n
Answer: 4. A Population<\/p>\n
Question 67. The largest population in an ecosystem is seen amongst\u2014<\/p>\n
\n- Decomposers<\/li>\n
- Producers<\/li>\n
- Primary consumers<\/li>\n
- Secondary consumersintra<\/li>\n<\/ol>\n
Answer: 2. Producers<\/p>\n","protected":false},"excerpt":{"rendered":"
Chapter 5 Environment And Its Resources Ecology And Ecological Organization Multiple Choice Questions Question 1. Branch of science dealing with the interrelation of a species and its environment is\u2014 Autecology Synecology Community biology Population biology Answer: 1. Autecology Question 2. Synecology deals with \u2014 A single individual A population A community Different ecosystems Answer: 3. … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[],"yoast_head":"\nWBBSE Class 9 Life Science Chapter 5 Ecology And Ecological Organization Multiple Choice Questions - WBBSE Solutions<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wbbsesolutions.net\/wbbse-class-9-life-science-chapter-5-ecology-and-ecological-organization-mcqs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"WBBSE Class 9 Life Science Chapter 5 Ecology And Ecological Organization Multiple Choice Questions - WBBSE Solutions\" \/>\n<meta property=\"og:description\" content=\"Chapter 5 Environment And Its Resources Ecology And Ecological Organization Multiple Choice Questions Question 1. 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Branch of science dealing with the interrelation of a species and its environment is\u2014 Autecology Synecology Community biology Population biology Answer: 1. Autecology Question 2. Synecology deals with \u2014 A single individual A population A community Different ecosystems Answer: 3. ... 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