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1) Which of the following is the correct order for a simple food chain? a. grasshopper, sparrow, grass, hawk b. grass, grasshopper, sparrow, hawk c. hawk, sparrow, grass, grasshopper d. grass, hawk, grasshopper, sparrow
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2) Symbiosis is a relationship between the members of a. same species b. two species c. different species d. equal species
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3) Burning of petroleum produces a. nitrogen dioxide b. ammonium dioxide c. sulphur dioxide d. carbon dioxide
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4) The process in which inorganic nutrients are enriched with water is called a. industrialization b. pollution c. eutrophication d. contamination
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5) Considering the Earth's ecosystem, the consumers are classified as a. autotrophs b. heterotrophs c. tertiary autotrophs d. secondary autotrophs
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6) The hydrocarbons (alkanes and alkenes), oxides of nitrogen (NO, NO2) and Sulfur (SO, SO2, SO3) and fluorine (F2) are released by the a. fertilizer industries b. thermal industries c. textile industries d. steel industries
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7) The lakes and forests are best classified as examples of a. artificial ecosystem b. natural ecosystem c. natural biosphere d. artificial biosphere
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8) The minerals are used as nutrients by a. decomposer b. producer c. consumer d. autotrophs
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9) Where does Rhizobium live? a. animal stomach b. human intestine c. animals brain d. root nodules
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10) The main component of many biomolecules is a. carbon b. sulphur c. potassium d. nitrogen
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11) The harmful effects of ultraviolet (UV) rays are visible in Australia and a. England b. Japan c. China d. New Zealand
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12) The name of the United Nations organization which advice on prevention of greenhouse gases is a. intergovernmental panel on climate change b. international panel on climate change c. interregional bureau on climate change d. intergovernmental panel of climate control
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13) The landslides, global warming, floods, and soil erosions are all the effects of a. deforestation b. afforestation c. overpopulation d. global warming
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14) The examples of tertiary consumers or secondary carnivores are a. plants and protozoan b. cattle and deer c. lions and tigers d. owls and wolves
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15) Ecology is the study of the relationship between the organism and their a. climate b. weather c. plants d. environment
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16) In the food chain, fewer animals are present at a. beginning of food chain b. end of food chain c. center of chain d. top of chain
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17) The Sulfur dioxide (SO2), soot and flu ash are pollutants released by a. textile industries b. steel industries c. fertilizer industries d. thermal industries
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18) The concept of the ecological pyramid was developed in a. 1928 b. 1970 c. 1983 d. 1927
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19) The population that interact with one another and live in a particular habitat are best classified as a. community b. biosphere c. ecosystem d. population
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20) All carnivore animals are a. scavengers b. predators c. inhibitors d. competitors
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