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- Multiple ChoicePlease save your changes before editing any questions.According to the food web, which of the following organisms can be classified into more than one trophic level?grasshopperowlrabbitfrog
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.Based on the food web shown above, which of the following is most likely responsible for the rabbit population trend as shown in the graph?increase in amount of grassdecrease in amount of grassoverpopulation in squirrel populationincrease in rabbit population
- Multiple ChoicePlease save your changes before editing any questions.
Tell if the item is an abiotic factor or biotic.....
TREE
Abiotic
Biotic
- Multiple ChoicePlease save your changes before editing any questions.
Tell if the item is an abiotic factor or biotic.....
Water
Abiotic
Biotic
- Multiple ChoicePlease save your changes before editing any questions.Abiotic factors in the environment are all __________.livingnonliving
- Multiple ChoicePlease save your changes before editing any questions.Energy in an ecosystem is used for growth or lost as __________lightheatdeathbiomass
- Multiple ChoicePlease save your changes before editing any questions.
Algae, grasses and trees are all __________.
decomposers
consumers
producers
pyramids
- Multiple ChoicePlease save your changes before editing any questions.A trophic level represents a _________.consumerfeeding levelspeeding levelcooking level
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Which of the following members of the food chain is a tertiary consumer?
tree
insect
bird
fox
- Multiple ChoicePlease save your changes before editing any questions.What is the source of energy that flows through most of the food chains on Earth?plantsthe suntemperaturewind
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.The efficiency of energy transfer from a lower trophic level to the next highest level is roughly1%10%100%1000%
- Multiple ChoicePlease save your changes before editing any questions.The arrows in a food chain or web represents what?They point to the organism that is being eaten.It shows how sunlight flows within an ecosystem.They show what direction the energy is flowing between organisms.They represent how water is transferred within a habitat.
- Multiple ChoicePlease save your changes before editing any questions.Biomass refers toChemical EnergyLight EnergyRank in the feeding heirarchyAmount of living tissue at the tropic level
- Multiple ChoicePlease save your changes before editing any questions.
Why do fish swim in schools?
for fun
to conserve energy
to learn
for protection
- Multiple ChoicePlease save your changes before editing any questions.
Why do geese fly behind each other in a "V" formation?
to save energy
to show off
to find food
to protect their young