Study sets, textbooks, questions
Upgrade to remove ads
Terms in this set (50)
Which of the following secondary metabolites in plants can attract the predators
of the herbivores that are eating the plant?
Why do many Acacia sp. trees in the savanna of Africa produce nutritious small
bundles of tissue at the base of their leaves?
To provide a food source for ants that will protect the trees against insects
Several ant species collect parts of leaves and bring the pieces of leaf to their nest
to feed a fungus that the ants use for their own food. Which type of herbivory is
Which of the following is usually true for Alkaloids in plant leaves?
They have a very high nitrogen cost
Which of the following best described geophagy?
Animals that eat dirt to counteract the toxins from eating plants
The amount of alkaloid in a leaf can increase dramatically after the leaf
experiences some damage from an insect herbivore. Which of the following best
describes this relationship?
If a secondary metabolite that is active in defense contains a high proportion of
carbon and is volatile this is most likely a ___________________________.
Based on the plot shown, if an organism has a lot of parental care of their young
and young are likely to survive well, which type of survivorship curve are they likely
Which of the following classes of organisms is likely to have very high infant
mortality, but once an individual survives to adolescence they are very likely to
survive through old age?
Survivorship in any age class (si) in a life table is equal to which of the following
in a Leslie matrix?
The R0 derived from a life table of a population represents which of the
The expected total number of offspring in a lifetime
What is the relationship between bi and mi?
bi is age specific births and mi is age specific maternity
If the lambda (λ) value derived from a Leslie matrix for a population is 0.959
what can one say about how the population size is changing over time?
The population size is decreasing
Which of the following is the best representation of how one calculates an age
specific fertility (fi) for a Leslie matrix?
Which of the following best describes the meaning of the term "sensitivity" in
relation to the Leslie Matrix analysis of population growth?
Sensitivity is a test whereby a scientist changes a probability or fertility in a matrix and sees what happens to the population lambda over time
You are studying a population of mice living in a forest. The starting population
size was 125 mice and λ = 1.2. Approximately how many mice will there be in the
forest population in three years from now? Note that mice have an annual breeding
season in this forest
Which of the following is one logical way that individuals in a population can
keep population size increasing over time in a habitat with a finite amount of
Have helpers gather resources for reproductive individuals
Under what conditions will Nt = K based on the Pearl and Reed relationship?
where b = number of individuals born and d = number of individuals that have died
Based on the Pearl and Reed derivative (dN/dt = rN(1-(N/K)) how is the
population size changing when N = K/2?
Population size will be increasing at its maximum rate
The r in the r-strategist refers to the life history syndrome selection based on
the intrinsic growth rate of the population
If a scientist wants to describe the potential growth rate of a population over
time, but the scientist is unable to identify every individual in the population, which
analysis would be best for determining population growth rate?
What value of N/K would result in a stable population size (i.e. no population
growth or decrease)?
Which of the following organisms is most likely to be a K selected species?
What is the shape of the plot defined by !"
!"# = �(1 − !
!) when !"
!"# is plotted
Hyperbola with a peak at K/2
Which of the following best represents key characteristics of an r selected
Variable population size with time and short lifetime
Which of the following best describes the "Allee" effect with populations?
At low population numbers population growth can decrease
If N is less than K what is the sign (+ or -) of dN/dt?
Which of the following best represents "Apparent" competition?
Two species that both have the same predator
Under what conditions of the fundamental niche of two species would
competition likely occur?
The fundamental niches of two species overlap
In California, Live Oak trees release phenolic compounds from their leaves when
it rains and these compounds get into the soil and reduce the seed production by
grasses; however, the tree is unaffected. Which of the following best describes this
There are many bird species like white Egrets that eat insects stirred up from
the vegetation by browsing cattle. Which of the following best describes the
interaction between the bird and the cattle?
Which of the following pairs of interactions have the same positive or negative
effects on the two interacting species?
Predation and Parasitism
In the Lotka-Volterra model for competition what do the α and β represent?
The relative effect of either species on the other
What is the outcome of the phase plane plot shown above which is derived from
the Lotka-Volterra model of species competitive interaction?
Either species 1 or 2 will win depending on what the original populations sizes are
In which of the labeled sections (A,B,C) of the following phase plane plot will
both of the competing species populations be decreasing?
What do the lines on the phase plane plots of competitive interaction represent?
The population size of one species at which there will be no further change in population size
One theoretical model for competition explains that whichever species arrives
first in a habitat will eventually be the winner in a competitive interaction. What is
the name of this theoretical model?
Resource preemption model
If one species lays its eggs on an individual of another species and the larvae of
the eggs consume the host individual then this is a case of ____________.
If a consumer finds its prey (host) with the use of a vector (another species)
then this would be a case of _______________.
Which of the following explains the general conclusion that scientists came to
when considering the temporal variation in the number of hare and Lynx pelts
received at a factory in Canada?
There is an offset cycle of population size between the lynx and the hare
Which of the following best defines the function of the prey population at 0
growth using the Lotka-Volterra model when there is NO density dependent
mortality of the prey?
In the following figure, what will be the time dynamical pattern of predator and
prey population dynamic?
Harmonic oscillation of both predator and prey populations
What is the death rate of the prey population dependent upon in the original
unmodified Lotka-Volterra model?
Predation efficiency times predator population times prey population
In the original unmodified Lotka-Volterra predator and prey model there is a
linear relationship between predation rate (number of prey consumed per time)
and the prey population size. What problem does this relationship cause in the
predator prey interaction?
In the end both the predator and prey species will go extinct
Under what conditions in the experiments performed by Gause on Paramecium
(prey) and Dididium (predator) did the prey population eventually grow
exponentially and the predator population go extinct?
When some sediments were put in the tank for the prey to hide
If we include predator satiation in the Lotka-Volterra predator-prey model,
which of the following would occur at very high prey population size? where T =
total time used for predation; TS = Total time searching for prey, and Th = total time
used for handling and consuming prey.
Which of the following is most related to the decision to consume one type of
prey in optimal foraging theory?
The balance of capturing time the prey to the time needed to handle and consume the prey (E/Th)
Alligator snapping turtle tongues have a little appendage that looks like a worm
to attract fish into their jowls. How does this help foraging by the alligator snapping
The searching time is reduced
Which of the following best defines the case where two different species have
the same bright warning coloration of their surface and both species have chemical
toxins in their body?
There are several insect predators that have an outward appearance that
mimics the physical structure of a flower. To what benefit is this mimicry for the
It reduces the energetic cost of searching for prey
Recommended textbook explanations
Kenneth R. Miller, Levine
Texas Science Fusion: Grade 7
Nelson Science Perspectives 10
Christy C. Hayhoe, Doug Hayhoe, Jeff Major, Maurice DiGiuseppe
Biology for NGSS
Sets found in the same folder
Sets with similar terms
Nres 219 quiz test 2
NRES 219 Exam 2 Quiz Q's
BIOL 1040 Surver Final
bio final 2
Other Quizlet sets
Blood Donations facts study guide
Environmental Engineering Lecture 15
Funções Químicas Inorgânicas: Ácidos, Bases, Sais…