WorksheetsScience 1/28 Bell Ringer
Total questions: 10
Worksheet time: 5mins
How do abiotic and biotic factors interact in an ecosystem to affect plant populations?
Only biotic factors influence plant growth
Abiotic factors have no effect on plant populations
Both factors work independently without interaction
Both factors work together to determine plant survival and growth
What is the primary reason organisms compete for resources in an ecosystem?
To establish dominance over other species
Because resources are unlimited
Because essential resources are limited
To create more biodiversity
In an energy pyramid, why does energy decrease as it moves up trophic levels?
Energy is created at each level
Energy is used for life processes and lost as heat
Predators don't need as much energy
Energy is stored equally at all levels
(a) enhances resilience against disturbances, leading to greater ecosystem stability.
What is the key difference between primary and secondary succession?
Primary succession occurs only in water
Secondary succession requires no soil
Primary succession begins on bare rock while secondary starts with existing soil
Secondary succession only occurs after fires
How does a decrease in producer populations affect an ecosystem's energy flow?
It has no effect on other trophic levels
It increases energy at higher trophic levels
It reduces available energy for all consumers
It only affects decomposers
What percentage of energy typically transfers between trophic levels?
10%
25%
50%
75%
Which factor would most likely trigger secondary succession?
A new volcanic island formation
A forest fire
The creation of bare rock
The formation of a new glacier
(a) contribute to primary succession by creating soil and breaking down rock.
Biodiversity plays a role in making ecosystems (a) in response to environmental changes.
