WorksheetsEcosystem Interactions and Energy Flow Quiz
Total questions: 23
Worksheet time: 2hrs 39mins
What is an ecosystem?
A community of organisms interacting with each other and the nonliving environment
A single species living in a specific area
A group of nonliving things in a particular area
A collection of unrelated organisms
Which of the following is an example of an abiotic factor in an ecosystem?
Sunlight
Grass
Deer
Trees
What is mutualism in species interactions?
One species benefits while the other is unaffected
One species benefits while the other is harmed
Both species benefit
Both species are harmed
In a food web, what do the arrows represent?
Energy flow
Predator-prey relationships
Competition
Symbiotic relationships
What is the 10% energy rule in ecosystems?
Energy decreases by 10% at each trophic level
Energy increases by 10% at each trophic level
Only 10% of energy is transferred to the next trophic level
Energy is evenly distributed among trophic levels
How does energy flow through an ecosystem?
It flows from consumers to producers
It flows from predators to prey
It flows from decomposers to consumers
It flows from producers to consumers
Why is biodiversity important to ecosystem health?
It reduces the number of species in the ecosystem
It provides resilience to environmental changes
It decreases stability of the ecosystem
It increases competition among species
What happens if keystone species are removed from an ecosystem?
The biodiversity decreases
The ecosystem collapses
The energy flow increases
The ecosystem becomes more stable
What is the role of decomposers in matter cycling?
They produce energy for the ecosystem
They break down dead organisms and recycle nutrients
They regulate the population of other organisms
They provide food for primary consumers
What is the term for the interaction where one species benefits while the other is harmed?
Mutualism
Commensalism
Parasitism
Symbiosis
What is the term for the interaction where one species benefits while the other is unaffected?
Parasitism
Commensalism
Symbiosis
Mutualism
What is the role of producers in an ecosystem?
They consume other organisms for energy
They break down dead organisms and recycle nutrients
They convert energy from the sun into food
They regulate the population of other organisms
What happens to the energy in an ecosystem as you move up the trophic levels?
It increases
It decreases
It remains the same
It fluctuates unpredictably
1. What are organisms that eat both producers and consumers classified as?
producers
omnivores
carnivores
herbivores
Which answer is the correct order for a food chain?
sun --> producers --> scavengers --> herbivores
consumers --> sun --> producers --> decomposers
sun --> decomposers --> producers --> consumers
sun --> producers --> consumers --> decomposers
1. Which organisms are receiving the greatest amount of energy according to the energy pyramid?
Buzzards and Foxes
Berries and plantains
Dragonflies and rabbits
Frogs
Which answer is a true statement? Use the food chain to answer the question.
The mushrooms break down the mountain lion because it is a scavenger
The mountain lion eats the deer and is a carnivore
The plant is a producer and gives energy directly to the carnivore
The deer is an omnivore because it eats only plants
Which 2 answers are true statements about energy pyramids?
As you go up the pyramid, energy passed on greatly increases
As energy is passed from one trophic level to the next, 90% is used up through activity, or transformed into heat
As you go up the pyramid, energy passed on greatly decreases
Producers pass on only 10% of their energy to carnivores
A pyramid shape is used to show the amount of available energy at each trophic level because...
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up.
energy increases up the food chain just like the pyramid shape gets smaller as you go up.
energy amounts are the same at each trophic level
According to the image, what is the secondary consumer?
plant
insect
mouse
snake
This question is confusing! Look carefully at the image. What trophic (energy) level is the secondary consumer?
1st
2nd
3rd
4th
Photosysnthesis and respiration are important because
they make mutualism possible
they are the building blocks of life
they are the 6 characteristics of life
they cycle matter and energy between autotrophs and heterotrophs
These organisms are often not shown in a food chain, but are important for recycling nutrients
producers
decomposers
primary consumers
carnivores
