3.3-3.4 Biology Quiz

In a graph, this represents the maximum number of individuals that can be supported by a particular ecosystem on a long term basis.

carrying capacity

The graph shows the population sizes for the moose population and the wolf population on Isle Royale. Based on the data in the graph, which of the following is the best estimate of the carrying capacity of the moose population?

1500

Represents the biotic potential of the species in a graph.

A, a line shoot almost straight upwards

What environmental conditions will have a negative effect on the limit a certain population of organisms is able to achieve in a habitat?

high levels of predation

Population growing exponentially is represented by what in a graph?

j-shaped curve

Cycads are gymnosperms that were diverse and abundant during the Mesozoic era. Extant species of cycads share many traits with those from the Mesozoic era. Cycads bear cones, are long-lived with slow growth rates, show late reproductive maturity, and have very few offspring. Based on this description, the cycads are what type of species?

k-selected

In a graph, this represents the growth of a population predicted by the logistic model.

logistic growth curve

What best explains the change in the moose population from 1995 to 1997?

population overshoot occurs and due to lack of resources to support the number of population, it rapidly declined

Certain species of dinosaur laid large numbers of eggs, and the hatchlings had high mortality early in life.But if they survived, the young dinosaurs were able to grow at a rapid pace and disperse into the environment in order to thrive. Based on this information what best characterizes this species of dinosaur?

r-strategist, type 2

The diagram illustrates how the number of individuals in a population changed with time as a result of external stresses and resource limitations. What portion of the curve most likely corresponds to the carrying capacity of the ecosystem?

the end of the curve, once it starts to level out

The graph provided shows the population of an organism introduced to a new environment and how the population changed over sixty days. After the sharp rise, there was a leveling off of the population. What does this indicate?

this indicates the ecosystem reaching its carrying capacity

Which curve best represents a K-selected species?

type 1 and 3

Certain lizards display a survivorship curve where the chance of survival is independent of age. What line on the graph best depicts the survivorship of these lizards?

type 2

Dandelions grow quickly and produce many seeds, ensuring that at least some plants will survive and produce seeds themselves. What curve best represents the survivorship of dandelions?

type 3