Key Terms
Fill in the Blank
True or False
Random
Essay
100
A group of organism and their nonliving environment
What is an ecosystem?
100
What is first trophic level?
In an ecosystem, the most abundent organisms are at the _____________ trophic level.
100
What is FALSE? An organism that cannot make its own food is a heterotroph.
An organism that cannot make its own food is an autotroph.
100
What is a scavenger?
Organism that feeds on the bodies of dead animals.
100
Tell me something new you learned in this chapter and explain it to me.
:) wonderful
200
A species that occur naturally in a given area.
What are native species?
200
What is competition?
The struggle between organisms to obtain the materials they need to live is called ___________.
200
What is TRUE?
Decomposers help return important substance to the environment.
200
Would a cave be considered a niche, habitat, or a community?
habitat
200
Go to the board and draw a food web with at least five different aniamls or plants.
Are your arrows going in the correct direction?
300
The trophic level that are the "self-feeders"
What is the first trophic level which are the autotrophs?
300
What is a scavenger/a heterotroph/or a tertiary consumer?
Because a volture is a bird that feeds on the bodies of dead animals it is called a ________________.
300
What is FALSE? Zebra mussels are an example of invasive species.
Zebra mussels were introduced into the Great Lakes in the 1980's. They thrived in their new environment, so much so that they pushed native mussels out of their spot in the food web and took over their habitats. Zebra mussels are an example of native species.
300
Which of the following is not a heterotroph? producer consumer scavenger decomposer
producer
300
Put these in order from largest to smallest. Community Ecosystem Population
ecosystem-community-population
400
An ecosystem's ability to continue or sustain itself.
What is sustainability?
400
What are carbon dioxide, water and sunlight? (CO2, H20, and E from sun)
__________, ___________ and ___________ are the raw materials of photosynthesis.
400
What is FALSE? All living things compete with other living things, however they do not compete exactly as we do. They compete for resources such as food, water, and habitat. Since these resources are limited, living things are always struggling to meet their needs at the expense of other living things.
All living things compete with other living things. They compete as we do, for the best marks, the fastest speed in a race, and the longest eyelashes.
400
A producer is to a consumer as a(n)... frog is to water oak is to a squirrel animal is to a plant parent is to child
oak is to a squirrel
400
What is the role of green plants in an ecosystem?
They are the primary producers in an ecosystem.
500
What are invasive species?
An introduced species that are successful in their new environment that they interfere with the natural ecosystem. Most often, native species can no longer survive where these live.
500
A food chain represents a ________ feeding pathway, whereas, food chains represent ________ feeding pathways, made up of multiple inter________ food chains.
What is: A food chain represents a _SIMPLE_ feeding pathway, whereas, food chains represent _COMPLEX_ feeding pathways, made up of multiple interCONNECTED_ food chains.
500
What is FALSE? A long-term change in abiotic elements such as a lack of rainfall, can kill the producers within an ecosystem, therefore LOWERING/DECREASING the population numbers of the trophic levels above producers in the energy pyramid. If producers are dying off, food becomes a limiting factor for the trophic levels above. Due to limited food sources, herbivore populations will not be able to meet their nutritional energy needs, and this lack of energy will have a cascading effect up the energy pyramid. The ecosystem will be unable to sustain itself.
A long-term change in abiotic elements such as a lack of rainfall, can kill the producers within an ecosystem, therefore boosting the population numbers of the trophic levels above producers in the energy pyramid.
500
In which relationship is one organism benefited and the other organism harmed?
parasitism
500
What is the difference between a food chain and a food web?
A food chain shows the relationship between a producer in an ecosystem and various comsumers that feed off the producer or off of consumers that feed off the producer. A food web shows all of the food chains that are interconnected in a particular ecosystem.
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