Chain, Web, Pyramid
Symbiosis
Ecosystems
Feeding Relationships
Vocabulary
100
What happens to energy as it moves through the food chain?
It decreases
100
What are the three types of symbiosis?
mutualism, commensalism, parasitism
100
What is a biotic factor? Give an example of a biotic factor found in a pond.

All living organisms or once living things inhabiting an environment.

Example: fish or plants

100
What is a producer?

all autotrophs (plants), they trap energy from the sun.

They are at the bottom of a food chain.


100
What is an herbivore?

Consumers that eat producers (plants).

They are primary consumers.

200

In this food chain: grass - mouse - snake - eagle, 

Which organism has the most amount of energy?

the grass
200

Epiphytes are plants, such as the orchid, that grow on another plant upon which it depends for mechanical support but not for nutrients. What kind of symbiosis does this represent?

Commensalism
200

What is a abiotic factor? Give an example of an abiotic factor found in a pond.

Nonliving parts of the environment. 

Ex. soil, water, oxygen

200
What is a primary consumer?

They feed on producers. They eat plants and are Herbivores


200
Considering this food chain: grass - mouse - snake - eagle, 

What would happen to the food chain if the mice all died?

The snake and eagle populations would decrease and the grass population would increase.
300
What is the 10% rule?

Only about 10% of the energy entering one trophic level forms biomass in the next trophic level. 

300
Deer ticks that attach to a host and feed off of its blood is an example of what type of symbiosis?
parasitism
300
Place the following terms in the proper order.  From simplest to most complex: populations, organisms, ecosystem, and communities.  
organism, population, community, ecosystem
300
What are carnivores?
They are predators who feed on other animals. They are secondary and tertiary consumers.
300

What is Commensalism?

A symbiotic relationship in which one species benefits and the other is neither harmed nor helped

400
In a food pyramid, which trophic layer has the greatest amount of energy?
The bottom layer, which consists of the producers.
400
Bees and flowers have what type of symbiotic relationship and why?
Mutualism because the bees help the flowers by spreading the pollen and the flowers help the bees by giving them their nectar for honey.  

Both species benefit from the relationship.

400
What is a limiting factor? Give an example.

Any biotic or abiotic factor that restricts the existence of organisms in a specific environment.  

Ex. water, food, space, habitat


400
What is an omnivore?

Consumers that eat both plants and animals


400
What is carrying capacity?

The maximum number of individuals of a species that an ecosystem can support.


500

Why are invasive species a threat?

they compete with native organisms for resources

500

What is a decomposer?

type of organism breaks down dead materials and waste into nutrients that can be used by plants

500
What is a trophic level?

A feeding step in the transfer of energy and matter in an ecosystem.


Each trophic level includes groups of organisms whose energy source is the same number of steps away from the Sun.

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