Ecology Quiz

This graph represents what?

• boom or bust

• exponential growth

• logistic growth

The following graph is an example of.....

• logistic growth

• exponential growth

• boom or bust

The following graph shows.....

• logistic growth

• exponential growth

• boom or bust

As the graph reaches line K, what is happening to the population?

• The population reaches its carrying capacity

• The population will drop almost to 0 once it reaches line K

• The population will eventually pass line K

The carrying capacity for a population is......

• dependent only on predators

• same for each organism

• not effected by limiting factors

• the number of people, other living organisms, or crops that a region can support without environmental degradation.

Limiting factors cause....

• populations to increase

• caps a population size at a certain point

• allows populations to grow exponentially

A volcano in Hawaii erupts and completely decimates a nearby ecosystem covering everything in liquid hot magma. After the magma cools how would you expect life to come back the the ecosystem?

• grasses -> small trees -> flowers -> shrubs -> large trees

• mosses -> wild flowers -> grasses -> shrubs -> large trees

• grass -> wild flowers -> shrubs -> small trees -> large trees

• lichens/mosses -> grasses -> shrubs -> small trees -> large trees

What picture depicts what type of succession?

• Secondary

• Primary

• Not enough information given

• Tertiary

The island of Surtsey came up from the ocean in the 1960's. According to what you have learned about succession, what would you expect the pioneer species to be on this new island?

• wild flowers

• annual grasses

• lichen

• any kind of plants that have roots

A density dependent factor is....

• where the effect on a population will always be the same no matter the population size

• where a population has reached its limit for the number of individuals the ecosystem can uphold

• where allele frequencies will always remain the same

• where the the effect something has on a population will be due to how many organisms are in the population