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WorksheetsRelationships in Ecosystems Unit Quiz
Total questions: 12
Worksheet time: 7mins
A population of wolves decrease over time. Choose all of the following factors that could have caused the wolf population to decrease.
increase in predators
increase in food
natural disasters
increased competition for shelter
Sunflowers use sunlight to produce their own food through the process of photosynthesis. Which term describes sunflowers?
first level consumer
decomposer
producer
heterotroph
Lions in the savanna rely on antelope as a primary food source. If the antelope population decreases, the lions may struggle to find enough food. This scarcity of prey is an example of ______ acting as a(n) _______ factor that could stop the lion population from growing.
shelter; biotic factic
space; abiotic factor
space; limiting factor
food; limiting factor
Looking at the organisms, where is the most energy available?
the hawk
the grass
the rabbit
the smake
Which organism gets the least amount of energy?
hawk
mouse
rabbit
grasshopper
In a lake ecosystem, where would the algae be located on the energy pyramid?
D
C
B
A
Which of the following food chains is correct?
Grass → Rabbit → Hawk → Snake
Algae → Fish → Seal → Shark
Corn → Cow → Wolf → Rabbit
Grass → Tree → Rabbit → Fox
Which of the following activities increases the amount of carbon dioxide in the atmosphere?
planting trees
driving gasoline-powered cars
cutting down trees
running for exercise
Which part of the water cycle involves water turning from a gas into a liquid?
evaporation
condensation
precipitation
runoff
Which of the following are true about the nitrogen cycle? Select all that apply.
Animals obtain nitrogen by consuming plants or other animals.
Nitrogen is released back into the atmosphere during decomposition.
Nitrogen is changed into a usable form by bacteria.
Plants absorb nitrogen directly from the atmosphere.
How are plants involved in the oxygen cycle?
Plants store oxygen in their leaves and release it when they decompose.
Plants take in oxygen from the soil and release it through their roots.
Plants absorb oxygen from the air and use it to produce food.
Plants release oxygen into the atmosphere through photosynthesis.
How are plants involved in the carbon cycle?
Plants absorb carbon dioxide from the atmosphere during photosynthesis.
Plants release carbon dioxide into the atmosphere when they grow.
Plants convert carbon dioxide into oxygen during respiration.
Plants store carbon dioxide in their roots and release it through their leaves.
