Limiting Factors in Ecosystems Quiz

What is a limiting factor in an ecosystem?

• A factor that increases the population size

• A factor that only affects non-living components

• A factor that restricts the number of individuals in a population

• A factor that has no effect on population size

Why doesn't the mouse population grow uncontrollably?

• Because they don't reproduce

• Due to limiting factors

• Because they migrate

• Due to lack of food

What is an example of competition in an ecosystem?

• A fish swimming in a pond

• A tree growing in a forest

• Two birds fighting for the same nesting site

• A lion hunting a zebra

How can diseases act as a limiting factor?

• By improving habitat conditions

• By providing more food

• By spreading rapidly and reducing population size

• By increasing the birth rate

Which weather condition can severely impact an ecosystem?

• Sunny days

• Drought

• Light breeze

• Mild rain

How do fires affect ecosystems?

• They destroy habitats and force organisms to relocate

• They have no effect

• They provide more shelter

• They increase food supply

What role do humans play in habitat availability?

• They only affect urban areas

• They can reduce habitats by clearing forests

• They always improve habitats

• They have no impact

What is the relationship between predator and prey populations?

• Predator populations are unaffected by prey populations

• Predator populations increase as prey populations increase

• Prey populations are unaffected by predator populations

• Predator populations decrease as prey populations increase

Why is the predator-prey relationship necessary?

• To increase predator numbers indefinitely

• To eliminate all prey

• To maintain balance in the ecosystem

• To ensure prey populations grow uncontrollably

What happens when there is more food available in an ecosystem?

• More organisms can survive

• Fewer organisms can survive

• Predators disappear

• The ecosystem becomes unbalanced