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 8
A pond ecosystem contains algae, small fish, frogs, and birds. If the small fish population decreases sharply, what is a likely effect on the frogs?
Describe the difference between a food chain and a food web.
Explain how humans can negatively impact ecosystems.
Explain the importance of decomposers in an ecosystem.
Explain the role of sunlight in an ecosystem.
Explain why energy flow in an ecosystem is described as a one-way process.
A grassland ecosystem has 10,000 units of energy at the producer level. If only 10% of energy is transferred to the next trophic level, how much energy is available to primary consumers?
A pond ecosystem contains algae, small fish, frogs, and birds. If the small fish population decreases sharply, what is a likely effect on the frogs?
Which of the following best defines an ecosystem? (1) A group of the same species living together (2) The interaction between living and non-living things in an area (3) Only the plants in a forest (4) Only the animals in a desert
Which of the following best describes a community in an ecosystem? (1) All the plants in an area (2) All the animals in an area (3) All the populations of different species living together (4) The non-living parts of an area
Which of the following best describes a niche? (1) The place where an organism lives (2) The role an organism plays in its ecosystem (3) The number of organisms in an area (4) The amount of food available
Which of the following best describes succession in an ecosystem? (1) The extinction of a species (2) The gradual change in species composition over time (3) The migration of animals (4) The increase in pollution
Fill in the blank: Animals that eat only plants are called __________.
Fill in the blank: The living components of an ecosystem are called __________.
Fill in the blank: The movement of water through evaporation, condensation, and precipitation is called the __________ cycle.
Fill in the blank: The non-living parts of an ecosystem, such as soil, water, and air, are called __________ factors.
True or False: A population is made up of all the different species living in an area.
True or False: All ecosystems have the same number of trophic levels.
True or False: All ecosystems must contain both biotic and abiotic components.
True or False: An ecosystem can exist without animals.
