WorksheetsSTAT Understanding Food Chains and Webs
Total questions: 10
Worksheet time: 5mins
What is a food chain?
A series of organisms each dependent on the next as a source of food
A network of interconnected food webs
A group of organisms that produce their own food
A cycle of water through the environment
Which of the following best describes producers in an ecosystem?
Organisms that decompose organic material
Organisms that consume other organisms for energy
Organisms that produce their own food through photosynthesis
Organisms that are at the top of the food chain
What role do decomposers play in an ecosystem?
They produce energy from sunlight
They break down dead organisms and recycle nutrients
They are the primary source of energy for all organisms
They are predators at the top of the food chain
How does energy flow in an ecosystem?
From decomposers to producers to consumers
From consumers to producers to decomposers
From producers to consumers to decomposers
From decomposers to consumers to producers
Differentiate between a food chain and a food web.
A food chain is a single pathway of energy flow, while a food web is a complex network of interconnected food chains.
A food chain includes only producers, while a food web includes only consumers.
A food chain is a network of food webs, while a food web is a single pathway of energy flow.
A food chain and a food web are the same.
Why are producers important in a food chain?
They decompose organic material
They provide energy for all other organisms in the ecosystem
They are the top predators
They recycle nutrients back into the soil
Explain the importance of decomposers in nutrient cycling.
They produce energy for the ecosystem
They prevent the accumulation of dead organic matter
They are the primary consumers in the food chain
They are responsible for photosynthesis
Which of the following statements about energy flow in ecosystems is true?
Energy flows from decomposers to producers
Energy is recycled within the ecosystem
Energy flows in one direction from producers to consumers
Energy flows from consumers to producers
Identify the primary source of energy for producers in an ecosystem.
Decomposed organic matter
Sunlight
Chemical energy from other organisms
Heat from the Earth's core
How do food chains and food webs contribute to the stability of an ecosystem?
They limit the number of species in an ecosystem
They ensure a constant flow of energy and nutrients
They prevent the extinction of top predators
They increase competition among species
