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WorksheetsADV Bio_Ecology Study Guide
Total questions: 25
Worksheet time: 18mins
An ant lives on an acacia tree- the ant protects the tree and the tree feeds the ant. What kind of relationship is this?
Mutualism
Commensalism
Parasitism
Predation
Which of the following are the ecosystem’s main decomposers?
Scavengers
Fungi and Bacteria
Birds
Lions and Bears
If there were 500,000 kcals available at trophic level 1, how many would be available at the secondary consumer level?
50,000
5,000
500
50
The Insect population would most likely DECREASE if there were…
An increase in decomposers
An increase in the amount of grass
A decrease in Mice and Shrews
A decrease in the amount of available sunlight
The least amount of available energy is found at level--
4
3
2
1
DTR: Yellow rattlers are plants that live on other plants and steal nutrients from them. They have to do this because they are heterotrophic, thus they cannot make their own food so they rely on other plants to be able to perform photosynthesis. Yellow rattlers take nutrients from these other plants to survive. This relationship is an example of…
Mutualism
Commensalism
Parasitism
Predation
Which of the following is accurate about the level of the pyramid shown above?
Level 1 are all carnivores
Level 2 are all producers
Level 3 are called tertiary consumers
Level 4 are the top predators
Which organism has the most available energy?
Snakes
Insects
Grasses
Rabbits
An organism that uses energy to produce its own food supply from inorganic compounds is called a—
Heterotroph
Autotroph
Consumer
Omnivore
Which organism would be considered a secondary consumer?
Snakes
Insects
Shrews
Rabbits
Why are decomposers so important?
They keep nutrients cycling through the ecosystem by returning organic material to the soil
They replace producers when they die
They are the ultimate source of energy
They limit carbon emissions
What type of succession is shown in the picture?
Primary
Secondary
What type of succession is shown in the picture?
Primary
Secondary
Which organism is able to break down rocks into soil?
Lichens
Bacteria
Decomposers
Fungi
What keeps nutrients and energy cycling through the ecosystem?
microorganisms that are decomposers
precipitation
primary succession
secondary succession
Which of the following represents the correct order in which these organisms would appear during primary succession?
Lichens > Shrubs > Trees > Grass
Grass > Shrubs > Trees > Lichens
Lichens > Grass > Shrubs > Trees
Lichens > Trees > Shrubs > Grass
Death rate would increase if...
the population was less than the carrying capacity
the population was more than the carrying capacity
there was less competition for food
there was enough room for everyone
What is lost the the environment at each of the trophic levels?
nutrients from soil
living space
food sources
heat
Lichens and mosses are often the first organisms to grow in an area. Over time, grasses and shrubs will grow. The grasses and shrubs are able to grow in the area because...
Pioneer species made it suitable
Producers are in every ecosystem
The mosses made food for grasses
The mosses provided enzymes
Which of the following best represents what happened in the graph?
Ecology Recession
Primary Succession
Secondary Succession
Competition of Species
At which trophic level is radiant energy being converted to chemical energy?
A
B
C
D
Which of the following would interfere with the natural order of succession?
mowing the lawn
building a road through a forest
tearing down trees to build a mall
all of these would interfere with succession
What amount of energy gets transferred up each trophic level?
10%
15%
25%
100%
Which of the following is NOT a mutualism relationship between organisms?
A bee eating nectar and transporting pollen of a flower
A bird cleaning the food out of a crocodile's teeth
Bacteria in your gut helping to break down your food
A barnacle hanging on a whale and riding around the ocean
In a stable ecosystem, the greatest biomass needs to be at what level of the pyramid?
Producer level
Primary consumer level
Secondary consumer level
Tertiary consumer level
