Biology Homework 4.1

Which of these abiotic factors would contribute to a clumped dispersion pattern in an ecosystem? Select all correct answers.

• unlimited water

• limited water

• high temperatures

• moderate temperatures

• limited rainfall

A population of antelope has a negative population growth rate. Which of these conditions must also be true for the population growth rate to be negative?

• births + deaths < immigrations + emigrations

• births + deaths > immigrations + emigrations

• births + immigrations < deaths + emigrations

• births + immigrations > deaths + emigrations

A population of warblers experiences a period of exponential growth. Which of these factors would be a density-dependent limiting factor that could decrease the carrying capacity of the ecosystem for the warbler population?

• a competing species moves into the forest

• a period of lower than normal rainfall

• a builder removes trees for an office park

• high winds knock down a quarter of the trees

A population of deer is displaced by a massive flood in their habitat following a severe rainstorm. The flood is an example of

• a density-dependent limiting factor.

• carrying capacity.

• a density-independent limiting factor.

• survivorship.

A population of rodents is introduced on a remote island due to a shipwreck. Eventually, the population reaches the island’s carrying capacity. At this point, the birth and death rates are...

• relatively equal.

• crashing.

• increasing.

Use the graph to answer the following question:

A female salamander lays hundreds of eggs at a time. However, after hatching, few of the larvae survive to adulthood. According to the graph, which type of survivorship does the salamander exhibit?

• Type I

• Type II

• Type III

Tags

NGSS.MS-LS4-4

Use the graph to answer the following question: A songbird has an equal chance of surviving at all stages of its life. According to the graph, which type of survivorship does the songbird exhibit?

• Type I

• Type II

• Type III