Energy and Matter in an Ecosystem Quick Check
1 of 41 of 4 Items
Question
In a food chain, with each feeding relationship, the energy transferred from one organism to another will(1 point)
Responses
increase.
increase.
be independent of the level.
be independent of the level.
remain constant.
remain constant.
decrease.
decrease.
Most food chains normally consist of no more than (1 point)
Responses
zero to one organism.
zero to one organism.
eight to nine organisms.
eight to nine organisms.
two to three organisms.
two to three organisms.
three to five organisms.
three to five organisms.
The black bear is common to North America. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammals—including those already dead—are also part of their diet. Some tend to wander near campsites and can develop a taste for human food and garbage. Given this information, which term most accurately characterizes black bears? (1 point)
Responses
decomposers
decomposers
omnivores
omnivores
producers
producers
carnivores
carnivores
omnivores
What is the usual composition of a food chain?(1 point)
Responses
a decomposer, some producers, and a consumer
a decomposer, some producers, and a consumer
a decomposer, a producer, and some consumers
a decomposer, a producer, and some consumers
a producer and multiple consumers
a producer and multiple consumers
multiple producers and a consumer