Man and His Environment MCQs with Answers

Which gas is primarily responsible for the greenhouse effect in Earth's atmosphere?

What is the primary factor that determines the distribution of terrestrial biomes?

Which process involves the conversion of light energy into chemical energy in the form of glucose during photosynthesis?

What is the role of primary consumers in a food chain?

What is the process by which one community replaces another over time?

Which type of symbiosis involves one organism benefiting, while the other is harmed?

What is the term for a group of interacting populations in a specific area?

In the food chain, what is the primary role of producers?

What is the term for the variety of different species, genetic variability within species, and different ecosystems on Earth?

Which term refers to the maximum number of individuals that an environment can support?

Which ecological pyramid represents the flow of energy through different trophic levels?

In the nitrogen cycle, what is the main source of nitrogen for living organisms?

Which biome is characterized by low temperatures, permafrost, and limited vegetation such as mosses and lichens?

What is the relationship between a predator and its prey in an ecosystem?

Which type of pollution is caused by excessive nutrients in water, leading to algal blooms and oxygen depletion?

What is the name for the process of converting sunlight into chemical energy in plants?

Which process involves the conversion of atmospheric nitrogen into a form that plants can use?

What is the process by which water is lost from plants through small pores in their leaves?

What is the primary function of decomposers in an ecosystem?

Which environmental issue is associated with the excessive use of fertilizers, leading to nutrient runoff and water pollution?

Which biome is characterized by grasses, widely spaced trees, and a distinct rainy season?

Which term refers to the gradual increase in the Earth's average temperature due to human activities?

What is the term for the role or function of an organism in its environment?

What is the primary source of energy for most ecosystems?

Which type of succession occurs on bare rock or after a volcanic eruption?

In which biome would you find a high density of evergreen trees adapted to cold temperatures and acidic soils?

What is the primary role of decomposers in nutrient cycling?

Which process involves the conversion of nitrates into nitrogen gas, returning it to the atmosphere?

What is the term for the process by which an organism adjusts its internal conditions to maintain a stable internal environment?

In which biome would you find a diverse array of plant and animal species, high rainfall, and high temperatures year-round?

Which gas is released during the process of cellular respiration in organisms?

What is the term for the process by which water changes from a liquid to a gas, primarily from the surface of water bodies?

What is the term for the process of water moving from the atmosphere to the Earth's surface through precipitation?

Which environmental issue is associated with the accumulation of non-biodegradable pollutants in the food chain?

Which atmospheric layer contains the ozone layer that protects life on Earth from harmful ultraviolet radiation?

What is the term for the gradual change in the composition of a community over time?

What is the term for the process by which water vapor is released from plants into the atmosphere?

What is the term for the range of conditions under which a species can exist and reproduce?

What is the term for the total mass of living organisms in a particular area at a given time?

Which ecological relationship benefits one organism while neither harming nor benefiting the other?