Vocabulary
Trophic Pyramid
Direct & Indirect Effects
Producers vs Consumer
100
In a local pond, a scientist maps out how energy flows from algae to insects, from insects to frogs, and from frogs to hawks. What is the scientist creating?
Food CHAIN
100
what word describes a model that shows how much energy is transferred from one stage to the next in a food chain
Trophic pyramid
100
In the following food chain, will snakes directly or indirectly affect hawk populations?
Directly
100
What type of consumer is the elk?
PRIMARY consumer
200
A park ranger notices that when the wolf population increases, the deer population immediately decreases. This specific interaction between wolves and deer is known as a(n):
DIRECT effect
200
What percent of energy is transferred to the level above in a trophic pyramid?
10 %
200
In the following food chain, will deer mice directly or indirectly affect hawk populations?
Indirectly
200
What makes an organism a primary consumer?
They eat PRODUCERS
300
In a forest, fungi and certain bacteria break down fallen logs and leaf litter, returning nutrients to the soil. These organisms are acting as:
DECOMPOSER
300
In what three ways is energy lost when organisms consume other organisms?
heat loss, carbon dioxide & waste
300
Which population will INDIRECTLY affect deer mice populations?
HAWK
OR
TREE
300
What type of consumer is the red fox?
SECONDARY & TERTIARY consumer
400
When sea otters are removed from an ecosystem, the sea urchin population explodes, which then leads to a massive disappearance of kelp forests. The effect of the otters on the kelp is a(n):
INDIRECT effect
400
A whale sharke eats on average 1,000,000 pounds of food in it's life time, however only weighs about 41,000 pounds. What percent of the energy and matter does the whale shark LOSE from it's food?
90%
400
How many food chains is the wolf a part of?
2
400
What makes an organism a tertiary consumer?
They eat SECONDARY consumers
500
If you move from the 'grass' level to the 'grasshopper' level in an ecosystem, you notice that only about 10% of the energy is available to the grasshoppers. Which model best illustrates this loss?
TROPHIC PYRAMID
500
In the following trophic pyramid model, the secondary consumers have 8.2 units of energy available. How much energy is available in the producer level?
820
500
Ecologist noticed an overpopultion of elk that are eating all the grasses and shrubs thus removing food for rabbits beetle and voles. What can scientist do to balance the ecosystem?
Add wolves
500
In the following trophic pyramid, which oraganisms are the secondary consumers?
Zooplankton