WorksheetsWarm up: Food Chains and Webs
Total questions: 10
Worksheet time: 5mins
A forest food web includes rodents, snakes, and great horned owls.
Snakes eat rats.
Great horned owls eat mice and snakes.
How will the owls most likely be affected by a sudden sharp increase in
local populations of rodents?
The owl population will either stabilize or increase.
The owl population will migrate to another area.
The owls will have to find another food source or risk starvation.
Owls will have to compete more with each other for available food.
Which description relates to an abiotic ecosystem factor?
Plants growing in the environment provide a source of shelter for
other organisms.
New organisms in the environment rely on favorable weather
conditions for survival.
Animals in the environment feed on algae and rich organic material
found in the water bed.
Which organisms in a wetland would be most impacted by a lack of
oxygen and moisture in the soil?
decomposers
algae
fish
Which are major abiotic factors that determine the types of plants that
can grow in an ecosystem?
birds and bees
precipitation and bees
precipitation and temperature
A woodland area where deer live is partially cleared to build homes for
people. Which best describes how the deer population will change as a
result of clearing the land to build homes?
The deer population will increase.
The deer population will decrease.
The deer population will remain the same.
Which best describes biotic stress in an ecosystem?
fungi damaging corn fields
wildfires started by lightning burning a forest
floods causing land degradation and soil erosion
high salinity levels in local waters decreasing crop yield
What term describes how a species meets its need for food and shelter
and how it reproduces?
niche
habitat
environment
Certain types of worms live in the mud at the bottom of lakes. What
does the mud represent for the worms?
community
shelter
niche
food
“Lions are predators to antelopes in many African ecosystems.” Which is
best being described?
a population shift
an abiotic factor
the lion’s niche
Which would happen to fish in a pond where the population of algae
increases?
A decrease in oxygen causes many fish to die.
An increase in nutrients allows for healthier fish.
A decrease in nutrients causes fish to become malnourished.
