What is a primary producer?
Name an example.
An organism that uses energy they take in from the environment to make food/energy.
Ex: Plants
Classify the following as an herbivore, a carnivore, an omnivore, or a detritivore.
An earthworm that eats the decaying remains of plants and animals.
Detritivore
What is this called?
Food chain
The maximum number of individuals of a particular species that a particular environment can support is its:
carrying capacity
Nutrients move through an ecosystem in:
(a) Biogeochemical cycles
(b) Water cycles
(c) pyramids of energy
(d) ecological pyramids
(a) Biogeochemical cycles
What is an herbivore?
Name an example.
An organism that eats plants
Ex: Giraffes, cows, etc.
Classify the following as an herbivore, a carnivore, an omnivore, or a detritivore.
A bear that feeds on plants and animals.
Omnivore
What is this called?
A food web
When a population is below its carrying capacity, it will ________ in size.
Increase
What type of growth is shown in the graph below?
Exponential
What is a carnivore?
Name an example.
An organism that eats meat AND kills its prey
Ex: Lions, tigers, etc.
Classify the following as an herbivore, a carnivore, an omnivore, or a detritivore.
A cow that feeds only on plants.
Herbivore
Which trophic level has the highest energy? Which has the lowest?
Highest: Producers
Lowest: Tertiary consumers
When a population is above its carrying capacity, it will ________ in size.
Decrease
What type of growth is shown in the curve below?
Logarithmic
What is an omnivore?
Name an example.
An animal that eats both meat and plants
Ex: Humans, dogs, etc.
Classify the following as an herbivore, a carnivore, an omnivore, or a detritivore.
A snail that feeds on plants, algae, and fungi.
Herbivore
In the aquatic system, which organisms have the largest population?
In the terrestrial ecosystem, which organisms have the largest population?
Aquatic: Zooplankton
Terrestrial: Grasses
What do the x- and y- axes represent?
X-axis: time
Y-axis: population size
In a certain food web, mice and cows both feed off of grass. To what trophic level do the mice belong? (Hint: What type of consumer is the animal?)
BONUS: What is another name for the correct answer?
Primary consumers
What is a detritivore?
Name an example.
An animal that feeds on dead organic matter. Ex: shrimp, crab, etc.
Classify the following as an herbivore, a carnivore, an omnivore, or a detritivore.
An owl that feeds only on animals.
Which of the following organisms is found in the trophic level with the greatest biomass that sustains the ecosystem represented by this food web?
What does the dotted line represent?
The carrying capacity
Which of the following organisms is found in the trophic level with the greatest biomass that sustains the ecosystem represented by this food web?
Acceptable answers: Phytoplankton, seaweed, or seagrass