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6-5 Test questions

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of the following is the most commonly exhibited population dispersion pattern in nature?
a.
clumped
b.
uniform
c.
random
d.
circular
e.
elongated
 

 2. 

Which of the following is NOT a likely explanation as to why most populations in nature exhibit clumped dispersion patterns?
a.
This allows for protection against potential predators in that there is safety in large groups.
b.
Important natural resources can also be clumped in nature.
c.
Living and hunting in packs improves the success rate of some predators.
d.
It ensures that members of the same species are always available for reproductive efforts.
e.
All of these are likely explanations as to why many species exhibit clumped dispersion patterns.
 

 3. 

The biotic potential of a population
a.
is the maximum reproductive rate of a population
b.
is the current rate of growth of a population
c.
is an expression of how many offspring survive to reproduce
d.
can be determined only by studying an age structure diagram.
e.
is the future rate of growth of a population
 

 4. 

A population will increase if
a.
natality decreases
b.
mortality increases
c.
the biotic potential increases
d.
the environmental resistance increases
e.
all of these answers
 

 5. 

Which of the following factors leads to an increase in biotic potential?
a.
too much or too little light
b.
low reproductive rate
c.
too many competitors
d.
optimal level of critical nutrients
e.
specialized niche
 

 6. 

Carrying capacity refers to
a.
reproductive rate
b.
interaction of natality and mortality
c.
the maximum size of population the environment will support
d.
the proportion of males to females
e.
the intrinsic rate of increase
 

 7. 

A logistic growth curve depicting a population that is limited by a definite carrying capacity is shaped like the letter ____.
a.
J
b.
L
c.
M
d.
S
e.
U
 

 8. 

An exponential growth curve depicting an ever-growing population is shaped like the letter ____.
a.
J
b.
L
c.
M
d.
S
e.
U
 

 9. 

A population crash occurs when
a.
A population approaches its carrying capacity.
b.
Environmental resistance comes into play gradually.
c.
Resources are essentially unlimited.
d.
A population greatly overshoots carrying capacity, and resulting environmental pressures cause effects.
e.
The population growth rate slows.
 

 10. 

Which of the following is typically characteristic of a K-strategist species?
a.
tend to produce high numbers of offspring
b.
give very little parental care
c.
low survival rate of offspring
d.
long gestation periods
e.
high offspring mortality
 

True/False
Indicate whether the statement is true or false.
 

 11. 

Most populations live in clumps.
 

 12. 

Most populations live in patches.
 

 13. 

Organisms with random distributions are fairly rare.
 

 14. 

Organisms with random distributions are fairly common.
 

 15. 

When calculating population change, births and immigration are added together and both deaths and emigration are subtracted.
 

 16. 

When calculating population change, births and emigration are added together and both deaths and immigration are subtracted.
 

 17. 

When calculating population change, deaths and immigration are added together and both   births and emigration are subtracted.
 

 18. 

Another name for exponential growth is geometric growth.
 

 19. 

Another name for exponential growth is logistic growth.
 

 20. 

Exponential growth has a j-shaped growth curve.
 

 21. 

Exponential growth has a s-shaped growth curve.
 

 22. 

Logistic growth has a j-shaped growth curve.
 

 23. 

Logistic growth has a s-shaped growth curve.
 

Short Answer
 

 24. 

What are the three general patterns of population distribution or dispersion in a habitat?
 

 25. 

The locations and sizes vary with what?
 

 26. 

What are 4 reasons why populations clump?
 

 27. 

What are four variables that determine population sizes?
 

 28. 

What are the three age structure categories for an age structure diagram?
 

 29. 

What does r stand for?
 

 30. 

No population can grow indefinitely because of limitations on _______ and _________ between species for those resources.
 

 31. 

List 4 limiting factors on the growth of populations.
 

 32. 

________ the combination of all factors that act to limit the growth of a population.
 

 33. 

What is typical of an r-selected species?
 

 34. 

What is typical of an K-selected species?
 



 
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