Ecosystems
Biology ⇒ Ecology and Environment
Ecosystems starts at 6 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Ecosystems.
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See sample questions for grade 11
A forest ecosystem is disturbed by a wildfire. Over time, grasses, shrubs, and eventually trees return. What type of succession is this?
A pond ecosystem receives a sudden increase in nutrients from agricultural runoff, leading to excessive algal growth. What is this process called?
Describe how human activities can impact the carbon cycle.
Describe the difference between gross primary productivity (GPP) and net primary productivity (NPP).
Describe the process of primary succession.
Describe the role of producers in an ecosystem.
Explain how invasive species can disrupt an ecosystem.
Explain the difference between a food chain and a food web.
Explain the difference between a habitat and a niche.
Explain why energy transfer between trophic levels is inefficient.
If a grassland ecosystem has a net primary productivity of 800 g/m²/year and plant respiration accounts for 200 g/m²/year, what is the gross primary productivity?
In an ecosystem, which organisms are responsible for recycling nutrients back into the soil?
Which cycle involves the processes of nitrogen fixation, nitrification, and denitrification?
Which trophic level do primary consumers occupy in a food chain?
