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WorksheetsEcology: Ch. 6-9
Total questions: 15
Worksheet time: 15mins
What is a food chain?
a representation of an organisms life cycle
a way to show the feeding relationships between organisms
the sequence of events that occurs during photosynthesis
a way to show how animals interact with nonliving parts of the environment
The first organism in a food chain is ALWAYS a
producer
consumer
decomposer
any of the these
What is the source of all energy in food?
Glucose
plants
the sun
soil
Which is the most accurate representation of feeding relationships?
food chain
food web
organic chain
organic web
What is the primary source of all energy stored in the food consumed by animals in a food chain?
the sun
plants
soil
rocks
As the length of a food chain increases, the amount of energy available for the next consumer . . .
increases
decreases
stays the same
A bird eats a worm for food. How much energy in the food (the worm) is actually used for growth in the bird and can be transferred to the next consumer in the food chain?
10%
50%
90%
100%
What is a trophic level?
a way to describe how much energy a consumer uses to fuel all the processes that keep it alive
a way to describe the position of an organism in a food chain
a way to describe how successful an organism is at surviving in its environment
a way to describe how much food an organism eats
How much energy is transferred from one trophic level to the next?
10%
25%
50%
90%
As you move higher in an energy pyramid, the population size of organisms in a trophic level . . .
increases
decreases
stays the same
What is a niche?
the habitat that an organism lives in
the organism's role in the ecosystem
a type of consumer
the relationship between a producer and a consumer
What happens when different species try to occupy the same niche?
the species compete with each other
the species cooperate with each other
the species coexist with each other
any of the above
In what type of relationship do both species benefit from the relationship?
parasitism
mutualism
commensalism
competitive
In what type of relationship does one organism benefit while the other is harmed?
parasitism
mutualism
commensalism
predation
What kind of relationship occurs when two organisms need the same resources?
predation
mutualism
commensalism
competitive
