Affiliate Marketing Secrets

A interaction is which both species benefit is best described as
• commensalisms
• mutualism
• predation
• parasitism
The number of individuals in a given area or volume of a habitat is
• the population density
• the population growth
• the population birth rate
• the population size
In natural communities, some feedback mechanisms operate whenever populations change in size, they are
• density-dependent factors
• density-independent factors
• always intrinsic to the individuals of the community
• always extrinsic to the individuals of the community
A population that is growing exponentially in the absence of limiting factors can be illustrated accurately by a(n)
• S-shaped curve
• J-shaped curve
• Curve that terminates in a plateau phase
• Tolerance curve
During the spring, male prairie chickens gather in open grassy areas an shuffle in a dance with their wings drooped, head erect and tail feathers spread. The function of this dance is to
• frighten off smaller birds from the territory
• select the showiest females to mate with
• attract the attention of the females
• imprint the younger male birds
• teach courting behavior to younger male birds
The maximum rate of increase per individual under ideal conditions is called the
• biotic potential
• carrying capacity
• doubling time
• population size
Female insects often attract mates by releasing sex pheromones. This signal is
• visual
• acoustical
• tactile
• chemical
The maximum number of individuals of a population (or species) that a given environment can sustain indefinitely defines ___________.
• exponential growth
• the carrying capacity of the environment
• the doubling time of a population
• density-independent factors
Newly hatched goslings follow any large moving object to which they are exposed shortly after hatching; this is an example of
• homing behavior
• imprinting
• piloting
• migration
The number of individuals that contribute to a population’s gene pool is
• the population density
• the population growth
• the population birth rate
• the population size
A young toad flips its sticky-tipped tongue and captures a bumblebee that stings its tongue; in the future, the toad leaves the bumblebees alone. This is and examples of
• instinctive behavior
• a fixed reaction pattern
• altruistic
• learned behavior
A newly mated queen ant found an ant nest in an unoccupied patch of suitable habitat. Assuming that no disasters strike the nest, which of the following types of equation is likely to best describe its population growth?
• linear
• quadratic
• logarithmic
• logistic
• exponential
Which of the following is NOT characteristic of logistic growth?
• S-shaped curve
• Leveling off of growth as carrying capacity is reached
• Unrestricted growth
• Slow growth of a low-density population followed by rapid growth
The range of all factors that influence whether a species can obtain resources essential for survival and reproduction is called the __________ of a species.
• habitat
• niche
• carrying capacity
• ecosystem
Assuming the birth and death rate remain constant, in the equation G = rN, r is equal to
• the per capita rate
• the minus migration factor
• exponential growth
• the net reproduction per individual per unit of time
A one-way relationship in which one species benefits an the other is directly harmed is
• commensalisms
• competitive exclusion
• parasitism
• mutualism
Answes:BAABCADBBBDCCBDC

1) A condition in the environment that can restrict a population’s growth is a
A) Niche
B) Limiting factor
C) growth factor
2) Which of the following is a measurement of population density?
A) The number of frogs in a pond
B) The number of deaths per year
C) the number of bacteria per square millimeter
3) Which would be least likely to be affected by a density-dependent factor?
A) A small, scattered population
B) A large, dense population
C) A population with a low death rate
Complete each sentence or statement:
The ___method of estimating population size involves measuring every member of a species within a small area.
Space, food, and ___ are density-dependent factors.