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WorksheetsEcosystem Lesson 2 review
Total questions: 20
Worksheet time: 5hrs 0mins
A rabbit depends on various plants in an ecosystem to survive. Which would most likely happen if a drought decreased the plant population?
The rabbit population would increase.
The rabbit population would decrease.
The rabbit population would remain the same.
The rabbit population would increase, then decrease quickly.
This diagram shows a simple ocean food chain.
algae → fish → seal
Which will most likely occur if the fish population decreases?
The algae and seal populations will increase.
The algae and seal populations will decrease.
The algae population will increase, and the seal population will increase.
The algae population will increase, and the seal population will decrease.
The diagram below is an aquatic food chain. Which will most likely occur if there is overfishing and a loss of clams?
The amount of algae would increase and the number of bass would increase.
The amount of algae would decrease and the number of bass would increase.
The amount of algae would increase and the number of bass would decrease.
The amount of algae would decrease and the number of bass would decrease.
This food chain shows organisms in a classroom aquarium. Which would benefit if the snail living in the aquarium were removed?
algae
crayfish
fish
plant
Why are animals like deer, raccoons, bears, and coyotes sometimes seen in neighborhoods?
because it is easier to find food
because they can escape predators
because their habitats are increasing
because their habitats are decreasing
The diagram below is a simple grassland food chain.
grass - mouse - snake
If a predator of the snake were introduced to the ecosystem, which would most likely happen
The grass population would increase.
The snake population would increase
The mouse population would increase
The mouse population would decrease.
This is an aquatic food chain. Which situation will most likely occur if the pond is polluted?
The tadpole population will decrease while the others will remain the same.
The algae population will decrease while the others will remain the same.
The algae, tadpole, and perch populations will decrease.
The algae, tadpole, and perch populations will increase.
Which is an example of a terrestrial organism relying on an aquatic organism for food?
Eagles consume fish to survive.
Birds consume worms to survive.
Fish consume seaweed to survive.
Frogs consume flying bugs to survive.
Which food chain below is shown correctly?
The diagram below shows part of a river food web. Which change would MOST likely reduce the number of both large roach fish and steelhead fish?
an increase in the amount of algae
an increase in the number of small invertebrates
a decrease in the number of predatory invertebrates
a decrease in the number of young stickleback fish
The diagram below shows part of a lake food web. Many tourists and locals have been fishing in the same spot in this lake for a long period of time. How will the organisms in this food web MOST likely be affected if this fishing continues?
The frog population will have fewer dragonflies to eat.
The dragonfly population will have more beetles to eat.
The pelican population will have less herring to eat.
The mayfly population will have less algae to ea
The diagram below shows a marine food web. Changing ocean temperatures have led to a large decrease in the number of horseshoe crabs. Which effect will MOST likely occur next?
The diamondback turtle and grackle populations will decrease.
The striped bass and plankton populations will decrease.
The razor clam population will increase.
The sanderling population will increase.
The diagram below shows a stream food web. The number of stonefly nymphs in a large stream increased over the last year. How will this MOST likely affect this food web?
The brook trout population will increase, and the fly larva will decrease.
The fly larva population will increase, and mayfly nymph population will decrease
The kingfisher population will decrease, and the brook trout population will increase.
The mayfly nymph population will decrease, and the algae population will increase
The diagram below shows part of an ocean food web. Which effect will an increase in sea urchins MOST likely have on this food web?
a decrease in the number of sea otters
a decrease in the amount of seaweed
a decrease in the amount of sunlight
a decrease in the number of parrotfish
The diagram below shows part of a river food web. A disease reduces the number of young salmon in a river. Which populations will MOST likely increase as a result?
trout and eagle
algae and trout
otter and sculpin
sculpin and algae
Some animals live in a grassland. A fire burns through the grassland. Which type of animal will BEST compete for resources after the fire?
one that eats meat
one that uses plants for shelter
one that lives under the ground
one that builds nests on the ground
The diagram below shows part of a river food web. The amount of algae in a river increases over time. How will this MOST likely affect this food web?
There will be more trout for the bears to eat.
There will be more sculpins for the snails to eat.
There will be fewer clams for the raccoons to eat.
There will be fewer minnows for the sculpins to eat
Geotropism is a response by plants to which force?
gravity
friction
air pressure
Earth’s magnetism
Numbers of Florida scrub jays have recently been decreasing throughout Florida. Which is the MOST likely reason for smaller populations of Florida Scrub Jays?
habitat loss
fewer predators
more eggs hatching
new food sources available
Noah visited a park that had many oak trees. Which BEST describes the role of an oak tree in its ecosystem?
Oak trees can live for a long time.
Oak trees have leaves that change colors.
Oak trees have strong branches and trunks.
Oak trees are a source of food and shelter for animals.
