Which of the following is most likely a decomposer?
grass
bacteria
water
bird
The term “primary consumer” is used to define an organism that
eats only plants for energy
eats only animals for energy
makes its own food for energy
doesn’t need any food for energy
Species that use the same source of nutrition within a food web can best be described as
providing double links in a food chain
being homeopathic for energy flow
occupying the same trophic level
being friends in the food web
Which of the following best explains why there are usually NOT more than five trophic levels in a food chain?
Most carnivores function at more than one trophic level
Trophic levels above this number contain too many individuals
Top carnivores are too few in number to hunt prey effectively
90% Energy is lost from each trophic level below
Which of the following is an abiotic part of an ecosystem?
Which of the following is true about secondary consumers in an ecosystem?
They eat only plants.
They are eaten by primary consumers.
They are smaller and weaker than are primary consumers.
They are fewer in number than are primary consumers.
A biotic relationship within an ecosystem in which both organism benefit is referred to as
Commensalism
Mutualism
Parasitism
Predator-prey
Cuckoo and Warbler- A cuckoo may lay its egg in a warbler's nest. The cuckoo's young will displace the warbler's young and the warbler will raise the cuckoo's young. This is an example of
A stable food chain will have a multitude of feeding relationships between organisms.
A cow and grass will have a predatory relationship even though it may not kill the plant it is eating.
