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WorksheetsEcological Levels and Relationships
Total questions: 15
Worksheet time: 15mins
Which of the following is a primary consumer in this food web?
Owl
Blue jay
Grasshopper
Snake
What is commensalism?
One organism feeds on another
Both organisms benefit from their relationship
One organism benefits and the other is neither helped nor harmed
One organism benefits while the other is harmed
Food webs are models that show:
one sequence of producers and consumers.
complex networks of feeding relationships.
stored energy in food chains.
only primary consumers in an ecosystem.
The blue jay and the grasshopper in this food web represent what type of ecological relationship?
mutualistic
parasitic
commensalistic
predator-prey
Symbiosis is a close relationship between two species that benefits at least one of the species. Which is NOT a type of symbiotic relationship?
mutualism
predation
commensalism
parasitism
What part of an ecosystem does this picture best show?
predator population
habitat
competitive exclusion principle
What is the collective term for all of the parts of the planet where life can be found?
biosphere
biome
community
population
In this food web which organism has 3 carnivorous predators and a consumer-producer relationship at the same time.
1
3
5
7
If the white-tailed deer population decreased, the coyote population would decrease, too. This is an example of a(n):
limiting factor
keystone species
adaptation to predation
What would be the order of the levels of organization if the inner circle was an individual organism what would be the last circle ?
population
ecosystem
community
organism
The feeding positions in a food chain or web are called:
trophic levels
biomass
energy
In a food web, which of the following organisms is most likely to be a primary producer?
Grass
Rabbit
Hawk
Snake
Which of the following best describes the term 'ecosystem'?
A community of organisms interacting with their physical environment
A group of the same species living in a specific area
The variety of life in the world or in a particular habitat
A large naturally occurring community of flora and fauna
In a mutualistic relationship, both species benefit. Which of the following is an example of mutualism?
Bees pollinating flowers
A lion hunting a zebra
A tapeworm living in a human intestine
A bird eating ticks off a buffalo
What is the primary role of decomposers in an ecosystem?
To produce energy through photosynthesis
To break down dead organisms and recycle nutrients
To compete with primary consumers for food
To provide shelter for small animals
