Energy Flow in Ecosystems
Biology ⇒ Ecology and Environment
Energy Flow in Ecosystems starts at 7 and continues till grade 12.
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See sample questions for grade 7
A food chain is always started by which type of organism?
A grasshopper eats grass, and a frog eats the grasshopper. What is the frog in this food chain?
Describe the role of the sun in the energy flow of an ecosystem.
Describe what happens to the amount of available energy as you move up the food chain.
Explain what would happen to the energy flow if all producers were removed from an ecosystem.
Explain why energy decreases at each trophic level in a food chain.
A grasshopper eats grass, and a frog eats the grasshopper. What is the frog in this food chain?
If a plant receives 1000 units of energy from the sun, about how much energy will be available to the primary consumer that eats the plant?
Which level in a food chain receives the least amount of energy?
(1) Producers
(2) Primary consumers
(3) Secondary consumers
(4) Tertiary consumers
Which of the following best describes an omnivore?
(1) Eats only plants
(2) Eats only animals
(3) Eats both plants and animals
(4) Eats only dead organisms
Which of the following best describes the direction of energy flow in an ecosystem?
(1) From consumers to producers
(2) From decomposers to producers
(3) From producers to consumers
(4) From consumers to decomposers
Which of the following best represents the correct order of a simple food chain?
(1) Producer → Decomposer → Consumer
(2) Producer → Consumer → Decomposer
(3) Consumer → Producer → Decomposer
(4) Decomposer → Producer → Consumer
Fill in the blank: Animals that eat both plants and animals are called __________.
Fill in the blank: Organisms that eat only plants are called __________.
Fill in the blank: The arrows in a food chain show the direction of __________ flow.
Fill in the blank: The diagram that shows the amount of energy at each trophic level is called an __________ pyramid.
Decomposers break down dead organisms and return nutrients to the soil. True or False?
Energy is lost as heat at each step in a food chain. True or False?
True or False: All energy in an ecosystem eventually leaves as heat.
True or False: All the energy from the sun is used by plants for photosynthesis.
