Unit 3 Review

The two types of limiting factors- anything that will affect a population's density- are:

• Density Dependent
• Variety Dependent
• Density Independent
• Spatially Independent

All of the following are density dependent limiting factors EXCEPT 

• Competition
• Disease
• Flooding
• Parasitism

What does a population growth curve show?

• The success of a subspecies
• The change in a population's growth over time
• Consumption rate
• Increase in mass of an organism

True or False: we can show growth rate on a graph by plotting the number of organisms present (y-axis) versus time (x-axis).

• True
• False

What type of growth curve is pictured here?

• Logistic Growth
• Carrying Capacity
• Predation Curve
• Exponential Growth Curve

Which of the following is NOT TRUE about carrying capacity?

• It is is the number of organisms that can be supported by the environmental resources in an ecosystem.
• Another term for carrying capacity is logistic growth.
• Carrying Capacity can be represented by an S-shaped curve
• It occurs when the rate of new growth in each generation is a multiple of the previous generation.

When the antelope population decreases, the lion population decreases. This statement is typical of:

• Exponential Growth
• Boom Bust Curve
• Carrying capacity
• Predation Curve

Which of the following is an example of a boom or bust population curve?

• An INSECT population’s cycle through the year. They are abundant in the summer months but are limited in the fall and winter months.
• Bears eat salmon from a stream.
• Snow hares and snow foxes shed brown summer coats for white winter coats.
• Elephants have one offspring at a time and invest years in caring for them.

All of the following are examples of symbiosis except:

• Mutualism
• Commensalism
• Paroxysm
• Parasitism

Which cycle relies on specific bacteria to make a substance available to plants in a form they can use?

• Water cycle
• Phosphorous Cycle
• Carbon Cycle
• Nitrogen Cycle