BIOL 1442 Ch 45 Review Questions

Population density typically decreases with increasing body size. Why do you think this is the case?

Population density typically decreases with increasing body size. Why do you think this is the case?

smaller animals require less food and other resources, so the environment can support more of them

If the major food source of the seals declines due to pollution or overfishing, which of the following would likely occur?

a) The carrying capacity of seals would decrease, as would the seal population

b) the carrying capacity of seals would decrease, but the seal population would remain the same

c) the number of seal deaths would increase, so the population size would remain the same

d) the carrying capacity of seals would remain the same, but the population of seals would decrease

a) The carrying capacity of seals would decrease, as would the seal population

Which of the following methods will tell an ecologist about both the size and density of a population?

a) mark and recapture

b) mark and release

c) quadrat

d) life table

c) quadrat

Which of the following is best a showing the life expectancy of an individual within a population?

a) quadrat

b) mark and recapture

c) survivorship curve

d) life table

d) life table

Humans have which type of survivorship curve?

Type I

How is clumped population distribution beneficial for prey animals?

Being a member of a larger group provides protection for each individual from predators

Which of the following is associated with long-term parental care?

a) few offspring

b) many offspring

c) semelparity

d) fecundity

a) few offspring

Which of the following is associated with multiple reproductive episodes during a species’ lifetime?

a) semiparity

b) iteroparity

c) semelparity

d) fecundity

b) iteroparity

Which of the following is associated with the reproductive potential of a species?

a) few offspring

b) many offspring

c) semelparity

d) fecundity

d) fecundity

Species with limited resources usually exhibit a ( ) growth curve

logistic

The maximum rate of increased characteristic of a species is called its

biotic potential

The population size of a species capable of being supported by the environment is called its

carrying capacity

Species that have many offspring at one time are usually

r-selected

A forest fire is an example of ( ) regulation

density-independent

Primates are examples of

K-selected species

Which of the following statements does not support the conclusion that giraffes are k-selected species?

a) Giraffes are approximately 6’ tall and weigh 150 lbs at birth

b) wild giraffes begin mating at 6-7 years of age

c) Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth

d) giraffes rarely give birth to twins

c) Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth

Which of the following would not negatively impact Yellowstone’s grey wolf carrying capacity?

a) snow in the winter

b) a beaver damming the river upstream

c) a forest fire

d) chronic wasting disease in the deer population

a) snow in winter

A country with zero population growth is likely to be

economically underdeveloped

Which of the following is not a way that humans have increased the carrying capacity of the environment?

a) agriculture

b) using large amounts of natural resources

c) domestication of animals

d) use of language

b) using large amounts of natural resources

The first species to live on new land, such as that formed from volcanic lava, are called

pioneer species

Which type of mimicry involves multiple species with similar warning coloration that are all true predators?

Müllerian mimicry

A symbiotic relationship where both of the coexisting species benefit from the interaction is called

mutualism

Which of the following is not a mutualistic relationship?

a) a shark using an aquatic cleaning station

b) a helminth feeding from its host

c) a bumblebee collecting pollen from a flower

d) bacteria living in the gut of humans

b) a helminth feeding from its host

The ability of rats to learn how to run a maze is an example of

cognitive learning

The training of animals usually involves

operant conditioning

The sacrifice of the life of an individual so that the genes of relatives may be passed on is called

kin selection

Why are polyandrous mating systems more rare the polygynous matings?

females usually devote more energy to offspring production and development

Which type of country has the greatest proportion of young individuals?

economically underdevolped