WorksheetsInterdependent Relationships in Ecosystems
Total questions: 25
Worksheet time: 25mins
____________________ study how organisms interact with biotic and abiotic factors in an ecosystem.
Chemists
Biologists
Ecologists
Geologists
A tick living on a dog and taking its blood is an example of
commensalism
predation
mutualism
parasitism
Fish picking off and eating bits of algae or parasites from a turtle's shell is an example of
competition
predation
commensalism
mutualism
The living parts of an ecosystem are called
abiotic factors
biotic factors
biology
microbiology
Why is interdependence important in ecosystems?
It allows ecosystems to be unaffected by changes
It ensures that no species have any interaction
It helps organisms to survive by relying on each other for food, shelter, and other needs
It makes ecosystems simpler
What is a food web?
A single pathway of feeding relationships among organisms in an ecosystem
A system that recycles nutrients in an ecosystem
A complex network of feeding relationships among organisms in an ecosystem
A group of primary consumers eating the same plant
Organisms interact with biotic and abiotic factors in an
ecosystem
ecology
ecologist
A consumer that hunts is called:
producer.
an omnivore.
a predator.
a herbivore.
If an organism is living inside another and causing it harm, it is an example
mutualism
commensalism
parasitism
If two organisms benefit from a relationship (++), it is called
mutualism
commensalism
parasitism
If two organisms have a relationship in which only one benefits (+,0), it is an example of
mutualism
commensalism
parasitism
The struggle between organisms to survive in a habitat with limited resources is called
competition
predation
symbiosis
parasitism
Mutualism, commensalism, and parasitism are examples of
competition
symbiotic relationships
prey adaptations
predation
Which of the following is an example of mutualism in an ecosystem?
A bee pollinating a flower
A lion hunting a zebra
A fungus decomposing a log
A bird nesting in a tree
What role do decomposers play in an ecosystem?
They produce energy from sunlight
They break down dead organisms and recycle nutrients
They compete with other organisms for resources
They provide shelter for other organisms
In a food chain, what is the primary source of energy for producers?
Sunlight
Water
Soil nutrients
Carbon dioxide
Which of the following best describes commensalism?
Both species benefit
One species benefits, the other is harmed
One species benefits, the other is unaffected
Both species are harmed
How do predators help maintain the balance of an ecosystem?
By increasing the population of prey species
By reducing competition among prey species
By controlling the population of prey species
By providing food for decomposers
What is the role of a keystone species in an ecosystem?
To be the most abundant species
To have a large impact on the structure of the ecosystem
To be the primary producer
To be the top predator
Which of the following is an example of a parasitic relationship?
A tick feeding on a dog
A bird cleaning a crocodile's teeth
A bee collecting nectar from a flower
A fish swimming with a shark
What is the main difference between a food chain and a food web?
A food chain shows all possible feeding relationships, while a food web shows one pathway
A food web shows all possible feeding relationships, while a food chain shows one pathway
A food chain includes decomposers, while a food web does not
A food web includes only producers and consumers
Which of the following is a biotic factor in an ecosystem?
Temperature
Water
Plants
Sunlight
How does competition affect species in an ecosystem?
It increases the resources available to all species
It leads to the extinction of all competing species
It limits the growth and survival of competing species
It has no effect on the species involved
What is an example of a real-world application of understanding interdependent relationships in ecosystems?
Designing sustainable agriculture practices
Building skyscrapers
Developing new pharmaceuticals
Creating video games
Why is biodiversity important for the stability of an ecosystem?
It increases the number of predators
It ensures a variety of food sources and resilience to changes
It decreases the number of prey species
It simplifies the food web
