Community interactions
Population Ecology
Aquatic ecosystems project
Carrying capacity
Miscellaneous
100

What type of relationship is shown in the image? 


Mutualism 

100

Give an example of a density independent factor.

storm, hurricanes, earthquakes, volcanic eruptions, habitat destruction 

100

What did you do to our tanks to start the nitrogen cycle? 

We added fish food

100

What is the carrying capacity of this graph? 


1000

100

any factor in the environment that does depend on the number of members in a population per unit area

Density Dependent factor

200


A bird makes a nest in a tree.  The bird gets a house, but the tree is unharmed. What type of relationship is this? 

Commensalism 

200

Which of the following describes an organism that has high mortality rates early in life. 


Curve A
200

What is the purpose of the plant in your tanks 

to provide oxygen for any organisms 

200

Will competition increase or decrease the carrying capacity of an ecosystem?

decrease

200

Name 2 benefits from all animal behaviors

Protection and saving energy 

300

Bacteria in your stomach and intestines is what type of symbiotic relationship? 

Mutualism 

300

What are the three types of plant and animal dispersion?

Clumped, Random, Uniform 

300

What is the purpose of the gravel in your tank?

to hold down any aquatic plants

300

When a population grows past the ecosystem's carrying capacity, what happens to the population?

The population begins to die and returns back to carrying capacity 

300

Name one way to decrease carrying capacity. Be specific 

Add more predators, reduce prey, more competition 

400

Explain why competition occurs between organisms 

Organisms will fight over limited resources. 

400

Which survivorship curve describes an organism that has high parental care with low reproduction? 

Type 1 survivorship curve

400

What is the ideal nitrite and nitrate level for our fish tanks? 

0 for both
400

Based on the data table, what is the carrying capacity of this population. 

Year     Number of snails

0          1000

1          750

2          580

3          600

4          750

5         1000

6         1200

7         1300

8         1350

9         1340

10       1350


1340/1350

400

Give an example of an organism that has this type of population growth. 


Human population

500

Provide an explanation for why the population of hares are always greater than the population of lynx. 

Hares receive more energy because they are lower on the food web compared to lynx. 

500

What type of interaction is shown in this image. Be specific  


Intraspecific competition 

500

What is the purpose of the LED lights 

To help the aquatic plants grow via photosynthesis

500

What is the independent and dependent variable of a carrying capacity graph? 

Independent: Time 

Dependent: Population size 

500

Describe a Type II survivorship. Give an example of an organisms that has a Type II survivorship. 

Constant mortality/survivorship, birds, lizards, reptiles, rodents