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WorksheetsCompetition Among Organisms Quiz
Total questions: 30
Worksheet time: 15mins
What is a limiting factor?
A factor that has no effect on population growth
A factor that only affects abiotic elements
A factor that restricts population growth
A factor that increases population growth
What are biotic factors?
Only the plants in an ecosystem
Factors that do not affect organisms
Living or once-living parts of an organism's habitat
Nonliving parts of an organism's habitat
Which of the following is an abiotic factor?
Sunlight
Birds
Trees
Insects
Why do organisms compete?
Because resources are unlimited
Because they enjoy competition
Because resources are limited
Because they want to migrate
What do male peacocks use to compete for mates?
Their size
Their nests
Their bright feathers
Their speed
What is a niche?
A predator of an organism
A type of food
A type of competition
The role of an organism in its habitat
Which of the following is an example of competition between populations?
A jaguar hunting alone
Sharks and dolphins competing for fish
Two male peacocks displaying feathers
A plant growing in the shade
What happens when two species share a niche?
Both populations become extinct
Both populations remain stable
One population usually decreases
Both populations increase
Which of the following is NOT a resource organisms compete for?
Shelter
Water
Food
Music
What is the primary food resource for bald eagles?
Seeds
Fish
Leaves
Insects
How do organisms with different niches interact?
They cannot coexist
They always fight
They compete less often
They compete more often
What is the main reason ocelot populations are endangered in South Texas?
Excessive water
Lack of food
Competition with bobcats
Too much sunlight
Which of the following is a biotic factor?
Soil
Sunlight
Plants
Water
What do plants compete for?
Air and water
Soil and sunlight
Predators
Mates
What is the effect of losing nesting space on bird populations?
Population growth would increase
Birds would migrate
Population growth would slow
Population growth would remain the same
What is the role of a niche in an ecosystem?
To eliminate predators
To define an organism's role and reduce competition
To provide unlimited resources
To increase competition
Which of the following is an example of an abiotic factor affecting a population?
A disease infecting plants
A drought reducing water supply
Predators increasing in number
Plants growing faster
What do jaguars, eagles, and boas have in common?
They eat plants
They do not compete
They eat other organisms
They are abiotic factors
What is the main focus of competition in an ecosystem?
To eliminate all predators
To create new species
To increase biodiversity
To survive using limited resources
How does competition affect population growth?
It always decreases growth
It can slow growth when resources are limited
It has no effect on growth
It always increases growth
What is the relationship between quantity and quality in terms of resources?
They are unrelated
Quantity is the amount, quality is a characteristic
Quality is the amount, quantity is a characteristic
They are the same
What happens when resources are abundant in an ecosystem?
Competition decreases
Resources become abiotic
Competition increases
All species become extinct
Which of the following is a result of competition within a population?
Elimination of all predators
Struggle for food and mates
Decreased need for resources
Increased biodiversity
What is the primary reason organisms compete?
To increase their size
To survive and reproduce
To eliminate other species
To migrate to new areas
How do organisms with similar niches interact?
They become extinct
They always cooperate
They never compete
They compete more often
What is the effect of a disease on plant populations?
Plants would become predators
Population growth would increase
Population growth would slow
Population growth would remain the same
What is the main factor that limits population growth?
Unlimited resources
Limiting factors
Excessive sunlight
Abundant water
What do organisms need to survive?
Food, space, water, sunlight, shelter
Only shelter
Only sunlight
Only water
What is the role of competition in an ecosystem?
To provide unlimited resources
To eliminate all species
To ensure survival using limited resources
To increase the number of predators
What is the effect of competition on species with the same niche?
Both populations remain stable
One population usually decreases
Both populations become extinct
Both populations increase
