Energy Flow in Ecosystems
Biology ⇒ Ecology and Environment
Energy Flow in Ecosystems starts at 7 and continues till grade 12.
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Describe the difference between a food chain and a food web.
Describe the role of sunlight in the energy flow of an ecosystem.
Describe what happens to the amount of available energy as you move up the trophic levels in a food chain.
Explain why decomposers are important for the energy flow in ecosystems.
Explain why energy flow in an ecosystem is considered a one-way process.
Explain why energy transfer between trophic levels is inefficient.
If a secondary consumer receives 100 kJ of energy, how much energy was available at the producer level?
In a grassland ecosystem, if the grass produces 10,000 kJ of energy, how much energy would be available to the primary consumers?
In a forest ecosystem, which of the following would be considered a tertiary consumer?
(1) Deer
(2) Grass
(3) Wolf
(4) Rabbit
In a marine ecosystem, which organism is most likely to be at the base of the energy pyramid?
(1) Shark
(2) Phytoplankton
(3) Seal
(4) Squid
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 describes the role of the Sun in energy flow?
(1) It is the ultimate source of energy for most ecosystems
(2) It is only important for aquatic ecosystems
(3) It is not involved in energy flow
(4) It is a decomposer
Fill in the blank: In a food chain, energy is lost at each trophic level mainly as ________.
Fill in the blank: Organisms that break down dead plants and animals are called ________.
Fill in the blank: The first trophic level in any ecosystem is always occupied by ________.
Fill in the blank: The interconnected feeding relationships in an ecosystem are called a ________.
True or False: All energy in an ecosystem eventually becomes heat.
True or False: Carnivores can be both secondary and tertiary consumers.
True or False: Decomposers play a role in returning nutrients to the soil.
True or False: Energy can be created or destroyed in an ecosystem.
