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WorksheetsEcology review
Total questions: 19
Worksheet time: 18mins
Which of the following correctly lists the flow of matter in the food web above?
plants, animals, nematodes, arthropods
animals, nematodes, arthropods, plants
plants, nematodes, arthropods, animals
nematodes, plants, arthropods, animals
Tell if the item is an abiotic factor or biotic.....
TREE
Abiotic
Biotic
Tell if the item is an abiotic factor or biotic.....
Water
Abiotic
Biotic
Algae, grasses and trees are all __________.
decomposers
consumers
producers
pyramids
Which of the following members of the food chain is a tertiary consumer?
tree
insect
bird
fox
What is the definition of an ecosystem?
A group of animals of the same species living in the same place.
All the plants and animals living in the same place.
All organisms living in the same place and the abiotic factors that affect them.
In the mid 1900's, the wolves of Yellowstone were deeply affected by humans and their population significantly decreased-- making them endangered, and eventually removing them completely from the Yellowstone ecosystem. The removal of wolves, the top predator, caused what to happen to the biodiversity within Yellowstone?
A trophic cascade affected the entire food web in Yellowstone, causing some organisms to experience decreases, and others to grow rapidly.
Biodiversity increased when the wolves disappeared and more species were able to flourish without the wolves.
A trophic cascade irreversibly ruined the ecosystem in Yellowstone--destroying biodiversity forever.
The biodiversity of the park was not affected when the wolves were removed.
The trophic cascade in Yellowstone had many causes and affects. Which answer below most accurately shows the changes in the ecosystem due to the reintroduction of wolves?
wolves reintroduced-> deer population increased -> tree and vegetation cover decreased
wolves reintroduced-> beaver population decreased -> tree and vegetation cover increased
wolves reintroduced-> deer population decreased -> tree and vegetation cover increased -> beaver population increased
wolves reintroduced-> deer population decreased -> beaver population decreased -> songbird population increased
Why do fish swim in schools?
for fun
to conserve energy
to learn
for protection
Why do geese fly behind each other in a "V" formation?
to save energy
to show off
to find food
to protect their young
