A food web shows the transfer of ________ between organisms in an ecosystem
What is energy?
100
These organisms make their own energy
What is autotrophs
100
These consumers eat only plants
What are herbivores
100
What is the difference between a food webs and a food chain?
What is a food web is one line of energy transfers. A food chain describes a complex interaction of many food webs in an ecosystem
200
What trophic level is always at the bottom of an energy pyramid?
What is producers
200
What option describes the flow of energy in an ecosystem?
a. Producers-->Primary Consumers-->Secondary Consumers
b. Secondary Consumers-->Primary Consumers-->Producers
c. Primary Consumers-->Producers-->Secondary Consumers
What is A
200
These organisms do not make their own energy and rely on consuming other organisms to make energy
What is heterotrophs
200
These consumers only eat meat
What are carnivores
200
Draw a typical energy pyramid, include the relative amounts of energy in each trophic level
Many answers acceptable
300
A trophic level represents a
a. Consumer
b. Chemical cycle
c. Feeding level
What is C
300
How do most producers make/get their energy?
What is from the sun (through photosynthesis)
300
Algae, grass, and tress are examples of
What is autotrophs
300
These consumers eat plants and animals
What are omnivores
300
A bird stalks, kills, and then eats and insect. Based on its behavior, which pair of ecological terms describe this bird
A. herbivore, decomposer
B. producer, heterotroph
C. carnivore, consumer
D. autotroph, herbivore
What is C
400
The trophic level that contains the largest biomass (number of organisms) is
What is producers
400
This percent of energy is transferred between trophic levels
What is 10%
400
Animals, Fungi, and most bacteria are examples of
What is heterotrophs
400
These consumers get energy by eating the carcasses of other animals that have been killed by predators or have died of natural causes classified as
What are scavengers
400
Identify the process that a producer can carry out that a consumer cannot
What is photosynthesis
500
What is the total amount of living material within a given trophic level called?
What is biomass?
500
90% of energy is lost to the environment as ______ between trophic levels
What is heat
500
What is another word that means the same as autotroph
What is producer
500
These consumers feed on dead and decaying organisms
What are decomposers
500
Explain the 10% rule and how energy flows through an ecosystem
The 10% rule states that only 10% of energy is transferred between trophic levels. 90% of energy is lost as heat to the environment. Energy begins with the sun which is then absorbed and changed into sugars by producers. Primary consumers eat producers to gain energy. Secondary consumers eat primary consumes to gain energy. When living organisms die, decomposers break them down to gain energy and act as natural fertilizer for new producers