Multiple-choice questions about ecosystems for students
What is an ecosystem? a) A single organism b) A group of organisms c) A community of living and non-living things d) A type of habitat Answer: c
Which of the following is a biotic factor in an ecosystem? a) Sunlight b) Water c) Soil d) Plants Answer: d
Which of the following is an abiotic factor in an ecosystem? a) Animals b) Air c) Trees d) Bacteria Answer: b
What is the primary source of energy in most ecosystems? a) Sunlight b) Water c) Soil d) Air Answer: a
What is the role of producers in an ecosystem? a) They eat other organisms for energy. b) They break down dead organisms. c) They capture energy from the sun and convert it into food. d) They regulate the temperature in the ecosystem. Answer: c
Which of the following is an example of a producer? a) Lion b) Snake c) Grass d) Hawk Answer: c
What is a consumer in an ecosystem? a) An organism that makes its own food. b) An organism that breaks down dead organisms. c) An organism that eats other organisms for energy. d) An organism that regulates the temperature in the ecosystem. Answer: c
Which of the following is an example of a consumer? a) Tree b) Grasshopper c) Flower d) Sunflower Answer: b
What is a decomposer in an ecosystem? a) An organism that makes its own food. b) An organism that breaks down dead organisms. c) An organism that eats other organisms for energy. d) An organism that regulates the temperature in the ecosystem. Answer: b
Which of the following is an example of a decomposer? a) Lion b) Vulture c) Mushroom d) Monkey Answer: c
What is the term used to describe a series of organisms where each organism is eaten by the next organism? a) Food chain b) Food web c) Energy pyramid d) Trophic level Answer: a
Which of the following represents the correct order of trophic levels in a food chain? a) Producers, consumers, decomposers b) Decomposers, consumers, producers c) Consumers, producers, decomposers d) Producers, decomposers, consumers Answer: a
What is a food web? a) A diagram that shows the flow of energy in an ecosystem. b) A diagram that shows the feeding relationships in an ecosystem. c) A diagram that shows the water cycle in an ecosystem. d) A diagram that shows the distribution of plants in an ecosystem. Answer: b
Which of the following best describes the relationship between a predator and its prey? a) Both organisms benefit. b) One organism benefits while the other is harmed. c) Both organisms are harmed. d) There is no relationship between them. Answer: b
What is the term used to describe the process of organisms producing offspring? a) Evolution b) Reproduction c) Mutation d) Extinction Answer: b
Which of the following is an example of a habitat? a) A single tree b) A pond c) A rock d) A cloud Answer: b
What is the term used to describe the variety of different species in an ecosystem? a) Population b) Erosion c) Biodiversity d) Pollution Answer: c
Which of the following is a threat to biodiversity? a) Conservation efforts b) Habitat destruction c) Species reintroduction d) Planting trees Answer: b
What is the term used to describe the process of one species benefiting while the other is harmed? a) Mutualism b) Predation c) Competition d) Parasitism Answer: d
Which of the following is an example of parasitism? a) A bee collecting nectar from a flower. b) A lion hunting and killing a zebra. c) A tick feeding on the blood of a dog. d) Two birds competing for the same nesting site. Answer: c
What is the term used to describe the process of organisms moving from one place to another? a) Migration b) Reproduction c) Hibernation d) Adaptation Answer: a
Which of the following is an example of migration? a) A bear hibernating during the winter. b) A bird flying south for the winter. c) A snake shedding its skin. d) A tree adapting to dry conditions. Answer: b
What is the term used to describe the process of organisms adapting to their environment over time? a) Evolution b) Reproduction c) Mutation d) Extinction Answer: a
Which of the following is an example of adaptation? a) A plant growing towards sunlight. b) A bear catching a fish. c) A rabbit reproducing. d) A tree losing its leaves in the fall. Answer: a
What is the term used to describe the gradual change in an ecosystem over time? a) Succession b) Evolution c) Mutation d) Extinction Answer: a
Which of the following is an example of primary succession? a) Moss growing on a rock. b) Grass growing on bare soil. c) Shrubs growing in an abandoned field. d) Trees growing in a mature forest. Answer: a
What is the term used to describe the process of converting sunlight into chemical energy? a) Photosynthesis b) Respiration c) Decomposition d) Transpiration Answer: a
Which of the following is an example of a habitat? a) A lion b) A pond c) A snake d) A tree Answer: b
What is the term used to describe the process of plants releasing water vapor into the air? a) Transpiration b) Photosynthesis c) Evaporation d) Root uptake Answer: a
Which of the following is an example of a terrestrial ecosystem? a) Coral reef b) Estuary c) Grassland d) Wetland Answer: c
Which of the following is an example of an aquatic ecosystem? a) Desert b) Forest c) Coral reef d) Grassland Answer: c
What is the term used to describe the process of water changing from a liquid to a gas? a) Transpiration b) Condensation c) Evaporation d) Precipitation Answer: c
Which of the following is an example of a renewable resource? a) Fossil fuels b) Natural gas c) Solar power d) Coal Answer: c
What is the term used to describe the process of capturing and reusing materials to reduce waste? a) Recycling b) Reproduction c) Digestion d) Decomposition Answer: a
Which of the following is a non-renewable resource? a) Wind energy b) Solar power c) Natural gas d) Geothermal energy Answer: c
What is the term used to describe the process of wearing away of the Earth's surface by wind, water, or ice? a) Erosion b) Pollution c) Decomposition d) Conservation Answer: a
Which of the following is an example of a scavenger in an ecosystem? a) Lion b) Vulture c) Deer d) Monkey Answer: b
What is the term used to describe the process of breaking down dead organisms into simpler substances? a) Decomposition b) Photosynthesis c) Combustion d) Respiration Answer: a
Which of the following is an example of a threat to aquatic ecosystems? a) Deforestation b) Desertification c) Overfishing d) Air pollution Answer: c
What is the term used to describe the study of interactions between organisms and their environment? a) Biology b) Ecology c) Zoology d) Botany Answer: b
Which of the following is an example of a keystone species in an ecosystem? a) Lion b) Grass c) Bee d) Earthworm Answer: c
What is the term used to describe the process of organisms dying off due to changes in their environment? a) Extinction b) Adaptation c) Migration d) Evolution Answer: a
Which of the following is an example of a consumer in a food chain? a) Sunflower b) Grasshopper c) Rabbit d) Butterfly Answer: c
What is the term used to describe the process of plants and animals obtaining oxygen and releasing carbon dioxide? a) Respiration b) Photosynthesis c) Combustion d) Decomposition Answer: a
Which of the following is an example of a pioneer species in ecological succession? a) Grass b) Tree c) Deer d) Rabbit Answer: a
What is the term used to describe the process of water falling from the atmosphere to the Earth's surface? a) Transpiration b) Condensation c) Evaporation d) Precipitation Answer: d
Which of the following is an example of a climax community in ecological succession? a) Grassland b) Shrubland c) Pond d) Forest Answer: d
What is the term used to describe the process of plants bending or growing towards light? a) Phototropism b) Geotropism c) Hydrotropism d) Thigmotropism Answer: a
Which of the following is a threat to terrestrial ecosystems? a) Overfishing b) Desertification c) Pollution d) Coral bleaching Answer: b
What is the term used to describe the process of two species competing for the same resources? a) Mutualism b) Predation c) Competition d) Parasitism Answer: c
Which of the following is an example of a omnivore? a) Lion b) Snake c) Rabbit d) Bear Answer: d
What is the term used to describe the process of plants producing oxygen during photosynthesis? a) Respiration b) Transpiration c) Evaporation d) Oxygenation Answer: d
Which of the following is an example of a terrestrial habitat? a) Coral reef b) Lake c) Desert d) Estuary Answer: c
What is the term used to describe the process of converting nitrogen gas from the atmosphere into a usable form by plants? a) Nitrogen fixation b) Photosynthesis c) Respiration d) Decomposition Answer: a
Which of the following is an example of a wetland ecosystem? a) Desert b) Tundra c) Marsh d) Savanna Answer: c
What is the term used to describe the process of organisms dying and becoming part of the soil? a) Decomposition b) Combustion c) Transpiration d) Erosion Answer: a
Which of the following is an example of a renewable resource? a) Natural gas b) Coal c) Solar power d) Oil Answer: c
What is the term used to describe the process of plants taking up water from the soil through their roots? a) Transpiration b) Photosynthesis c) Evaporation d) Root uptake Answer: d
Which of the following is a threat to biodiversity? a) Conservation efforts b) Habitat destruction c) Species reintroduction d) Planting trees Answer: b
What is the term used to describe the process of organisms in an ecosystem relying on one another for survival? a) Symbiosis b) Competition c) Predation d) Reproduction Answer: a
Which of the following is an example of a pioneer species in ecological succession? a) Grass b) Tree c) Deer d) Rabbit Answer: a
What is the term used to describe the process of animals entering a period of inactivity to conserve energy? a) Hibernation b) Migration c) Adaptation d) Extinction Answer: a
Which of the following is an example of a primary consumer in a food chain? a) Grass b) Rabbit c) Hawk d) Lion Answer: b
What is the term used to describe the process of converting organic matter into simple compounds by decomposers? a) Decomposition b) Respiration c) Combustion d) Transpiration Answer: a
Which of the following is a non-renewable resource? a) Wind energy b) Solar power c) Natural gas d) Geothermal energy Answer: c
What is the term used to describe the process of gradual change in a community over time? a) Succession b) Evolution c) Mutation d) Extinction Answer: a
Which of the following is an example of a terrestrial ecosystem? a) Coral reef b) Estuary c) Grassland d) Wetland Answer: c
What is the term used to describe the process of plants releasing water vapor into the air? a) Transpiration b) Photosynthesis c) Evaporation d) Root uptake Answer: a
Which of the following is an example of a climax community in ecological succession? a) Grassland b) Shrubland c) Pond d) Forest Answer: d
What is the term used to describe the process of water changing from a liquid to a gas? a) Transpiration b) Condensation c) Evaporation d) Precipitation Answer: c
Which of the following is an example of a renewable resource? a) Fossil fuels b) Natural gas c) Solar power d) Coal Answer: c
What is the term used to describe the process of capturing and reusing materials to reduce waste? a) Recycling b) Reproduction c) Digestion d) Decomposition Answer: a
Which of the following is a non-renewable resource? a) Wind energy b) Solar power c) Natural gas d) Geothermal energy Answer: c
What is the term used to describe the process of wearing away of the Earth's surface by wind, water, or ice? a) Erosion b) Pollution c) Decomposition d) Conservation Answer: a
Which of the following is an example of a scavenger in an ecosystem? a) Lion b) Vulture c) Deer d) Monkey Answer: b
What is the term used to describe the process of breaking down dead organisms into simpler substances? a) Decomposition b) Photosynthesis c) Combustion d) Respiration Answer: a
Which of the following is an example of a threat to aquatic ecosystems? a) Deforestation b) Desertification c) Overfishing d) Air pollution Answer: c
What is the term used to describe the study of interactions between organisms and their environment? a) Biology b) Ecology c) Zoology d) Botany Answer: b
Which of the following is an example of a keystone species in an ecosystem? a) Lion b) Grass c) Bee d) Earthworm Answer: c
What is the term used to describe the process of organisms dying off due to changes in their environment? a) Extinction b) Adaptation c) Migration d) Evolution Answer: a
Which of the following is an example of a consumer in a food chain? a) Sunflower b) Grasshopper c) Rabbit d) Butterfly Answer: c
What is the term used to describe the process of plants and animals obtaining oxygen and releasing carbon dioxide? a) Respiration b) Photosynthesis c) Combustion d) Decomposition Answer: a
Which of the following is an example of a pioneer species in ecological succession? a) Grass b) Tree c) Deer d) Rabbit Answer: a
What is the term used to describe the process of water falling from the atmosphere to the Earth's surface? a) Transpiration b) Condensation c) Evaporation d) Precipitation Answer: d
Which of the following is an example of a climax community in ecological succession? a) Grassland b) Shrubland c) Pond d) Forest Answer: d
What is the term used to describe the process of plants bending or growing towards light? a) Phototropism b) Geotropism c) Hydrotropism d) Thigmotropism Answer: a
Which of the following is a threat to terrestrial ecosystems? a) Overfishing b) Desertification c) Pollution d) Coral bleaching Answer: b
What is the term used to describe the process of two species competing for the same resources? a) Mutualism b) Predation c) Competition d) Parasitism Answer: c
Which of the following is an example of an omnivore? a) Lion b) Snake c) Rabbit d) Bear Answer: d
What is the term used to describe the process of plants producing oxygen during photosynthesis? a) Respiration b) Transpiration c) Evaporation d) Oxygenation Answer: d
Which of the following is an example of a terrestrial habitat? a) Coral reef b) Lake c) Desert d) Estuary Answer: c
What is the term used to describe the process of converting nitrogen gas from the atmosphere into a usable form by plants? a) Nitrogen fixation b) Photosynthesis c) Respiration d) Decomposition Answer: a
Which of the following is an example of a wetland ecosystem? a) Desert b) Tundra c) Marsh d) Savanna Answer: c
What is the term used to describe the process of organisms dying and becoming part of the soil? a) Decomposition b) Combustion c) Transpiration d) Erosion Answer: a
Which of the following is an example of a renewable resource? a) Natural gas b) Coal c) Solar power d) Oil Answer: c
What is the term used to describe the process of plants taking up water from the soil through their roots? a) Transpiration b) Photosynthesis c) Evaporation d) Root uptake Answer: d
Which of the following is a threat to biodiversity? a) Conservation efforts b) Habitat destruction c) Species reintroduction d) Planting trees Answer: b
What is the term used to describe the process of organisms in an ecosystem relying on one another for survival? a) Symbiosis b) Competition c) Predation d) Reproduction Answer: a
Which of the following is an example of a pioneer species in ecological succession? a) Grass b) Tree c) Deer d) Rabbit Answer: a
What is the term used to describe the process of animals entering a period of inactivity to conserve energy? a) Hibernation b) Migration c) Adaptation d) Extinction Answer: a
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