Energy Flow in Ecosystems
Biology ⇒ Ecology and Environment
Energy Flow in Ecosystems starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Energy Flow in Ecosystems.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
Describe how energy flow in aquatic ecosystems can differ from that in terrestrial ecosystems.
Describe the consequences of removing a top predator from an ecosystem in terms of energy flow.
Describe what happens to the energy that is not transferred to the next trophic level.
Explain the concept of 'biological magnification' and its relation to energy flow.
Explain the difference between a food chain and a food web.
Explain why energy pyramids are always upright, but pyramids of biomass or numbers can sometimes be inverted.
Explain why food chains rarely have more than four or five trophic levels.
In a scenario where a pesticide is introduced at the producer level, explain how energy flow affects the concentration of the pesticide at higher trophic levels.
Which of the following best describes the direction of energy flow in an ecosystem?
(1) From decomposers to producers to consumers
(2) From consumers to producers to decomposers
(3) From producers to consumers to decomposers
(4) From consumers to decomposers to producers
Which of the following best describes the pyramid of energy?
(1) It shows the number of organisms at each trophic level
(2) It shows the biomass at each trophic level
(3) It shows the flow of energy at each trophic level
(4) It shows the diversity of species at each trophic level
Which of the following best explains why energy flow is considered unidirectional in ecosystems?
(1) Energy is constantly recycled
(2) Energy is lost as heat at each transfer
(3) Energy increases at higher trophic levels
(4) Energy is stored in decomposers
Which of the following best represents the correct order of energy flow in a terrestrial ecosystem?
(1) Sun → Producers → Primary consumers → Secondary consumers → Decomposers
(2) Sun → Decomposers → Producers → Consumers
(3) Sun → Consumers → Producers → Decomposers
(4) Sun → Producers → Decomposers → Consumers
Fill in the blank: Organisms that make their own food using sunlight or chemical energy are called ________.
Fill in the blank: The efficiency of energy transfer from one trophic level to the next is called ________ efficiency.
Fill in the blank: The energy available to the top carnivore in a food chain is usually less than ________ percent of the energy captured by producers.
Fill in the blank: The process by which green plants convert solar energy into chemical energy is called ________.
True or False: All the energy captured by producers is passed on to primary consumers.
True or False: Carnivores can be found at both secondary and tertiary consumer levels.
True or False: Decomposers play a role in energy flow by breaking down dead organic matter.
True or False: Energy flow in an ecosystem can be represented by an energy pyramid, a food chain, or a food web.
