WorksheetsUnit 2 Test Review- Energy Flow/Cycles
Total questions: 35
Worksheet time: 33mins
Too much phosphorus in waterways (rivers, lakes) can lead to___________.
eutrophication
Nothing
Death
diseases
Cutting down large forests (deforestation) can result in:
little to no changes
more homes for animals
less plants to absorb carbon dioxide, a greenhouse gas
In eutrophication, plant nutrients cause ________ to bloom.
algae
decomposers
plants
monkey fish
Where do plants get their energy from?
the sun
other animals
the soil
the do not need energy
If all of the plants were removed from a food web what would happen?
Birds and grasshoppers would thrive
Only the snakes would survive
The food web would produce more bacteria to compensate.
The food web would completely collapse
IF the owls were removed from the food chain, what would happen to the mouse population?
Removing the owls would not affect the other organisms.
The plant population would increase
The mouse population would decrease
The mouse population would increase
If the plant in the food chain has 20,000 kcal of energy, how much is passed to the insect?
20,000
2000
200
20
Where is the greatest biomass found in a food web?
producers like grass
herbivores like cows
carnivores like lions
omnivores like racoons
How much energy is lost at each trophic level?
10%
90%
50%
none
Why do higher trophic levels in most ecosystems contain fewer organisms than lower trophic levels?
Energy available for use to the highest trophic level is small
Energy available for use to the lowest trophic level is small.
Energy available for use to the highest trophic level is large.
Energy available for use to the highest and lowest trophic levels is the same.
What percent (%) of energy is transferred from one trophic level to the next?
5%
10%
15%
20%
Algae generate 84,000 kcals of tissue. Which represents the amount of energy available for primary consumers in the food chain?
84,000 kcals
8,400 kcals
840 kcals
84 kcals
The levels of nourishment in a food chain are called
pyramids of numbers.
trophic levels.
food phases.
biomagnitudes.
In the food chain pictured, what type of organism is the bird?
producer
primary consumer
secondary consumer
tertiary consumer
The model of the energy available at each level that ALWAYS gets smaller as you go up is the
energy pyramid.
numbers pyramid.
biomass pyramid.
food web.
In the picture, which organism is the primary consumer?
plant
snake
mouse
bird
In this food web, a ___ is a primary consumer and a ___ is a secondary consumer.
rabbit, snake
grass, mouse
rabbit, wildflower
snake, mouse
If the snake population decreased, which populations would increase as a result?
Birds and Frogs
Hawks and Frogs
Birds and Hawks
Frogs and Butterflies
What do you call the increase in the concentration of the pollutant as it moves up through the food chain
Bioaccumulation
Biology
Biomagnification
Biodiversity
In which organism would biomagnification be the most concentrated? (Remember the lab: Rabbits eat the grass, the snake eats the rabbit, the hawk eats the snake--the hawk is the apex predator)
grass
rabbit
snake
hawk
In what year were the most toxins present in smallmouth bass?
2000
2002
2004
2005
Toxin concentrations _____________ as you go up the food chain.
do not change
increase
decrease
