Environmental and Conservation Biology

6 years ago

In the Lotka-Volterra models of predator-prey interactions, prey density does not influence predator ...

In the Lotka-Volterra models of predator-prey interactions, prey density does not influence predator mortality.

True or False?

Iridium 129 1 Reply

6 years ago

Grazers and browsers are true predators (True or false?)

Grazers and browsers are true predators.

True or False?

melaa 62 1 Reply

6 years ago

Scavengers are heterotrophs (True or false?)

Scavengers are heterotrophs.

True or False?

melaa 53 1 Reply

6 years ago

Which of the following caused massive declines in U.S. commercial fish populations?

Which of the following caused massive declines in U.S. commercial fish populations?
A) recreational anglers
B) freak weather events in the 1980s
C) huge factory trawlers
D) foreign commercial fisherman

mat 51 1 Reply

6 years ago

The ideal number of fish to catch to provide the most yield while sustaining fisheries is

The ideal number of fish to catch to provide the most yield while sustaining fisheries is
A) at K/2.
B) at K.
C) dN/dt.
D) rN(1 - N/K).

Iridium 38 1 Reply

6 years ago

Which of the following is considered a nonlethal effect of predation?

Which of the following is considered a nonlethal effect of predation?
A) reduced activity of prey
B) prey consumption
C) reduced competition
D) increased predator mortality

melaa 38 1 Reply

6 years ago

Quantitative inhibitors (Multiple Choice Question)

Quantitative inhibitors
A) are produced in small quantities by a plant.
B) are toxic to herbivores.
C) reduce digestibility of plant material.
D) include cyanide and alkaloids.

Iridium 48 1 Reply

6 years ago

Which of the following is not a class of plant secondary compounds?

Which of the following is not a class of plant secondary compounds?
A) terpenoids
B) phenolics
C) nitrogen-based compounds
D) alkanes

Iridium 45 1 Reply

6 years ago

Which of the following hunting methods has the lowest frequency of success but requires the least ...

Which of the following hunting methods has the lowest frequency of success but requires the least amount of energy?
A) satiation
B) ambush
C) stalking
D) pursuit

mat 60 1 Reply

6 years ago

Which of the following is an induced defense?

Which of the following is an induced defense?
A) bright coloration of poison dart frogs
B) high-pitched alarm calls by a squirrel
C) background color matching by a chameleon
D) walking sticks resembling twigs

mat 56 1 Reply

6 years ago

Which animal does not employ protective armor for predator defense?

Which animal does not employ protective armor for predator defense?
A) armadillo
B) beetle
C) scorpion
D) porcupine

mat 32 1 Reply

6 years ago

When prey produce so many offspring in a short period of time that predators can attack only a ...

When prey produce so many offspring in a short period of time that predators can attack only a fraction of them, it is referred to as
A) a numerical response.
B) a functional response.
C) predator satiation.
D) cryptic reproductio

mat 52 1 Reply

6 years ago

Which of the following is an example of Müllerian mimicry?

Which of the following is an example of Müllerian mimicry?
A) walking sticks that resemble twigs
B) stinkbugs that produce a noxious odor
C) flounders whose colors resemble the sea floor
D) wasps with black and yellow bands

melaa 83 1 Reply

6 years ago

Which of the following is an example of cryptic coloration?

Which of the following is an example of cryptic coloration?
A) a brown bird that nests on the ground
B) a deer with a large, white tail
C) skunks with black and white stripes
D) snakes with black, yellow, and red bands

mat 62 1 Reply

6 years ago

All three of these species are harmful. This is an example of

All three of these species are harmful. This is an example of
A) Müllerian mimicry.
B) Batesian mimicry.
C) optimal foraging theory.
D) functional response.

melaa 56 1 Reply

6 years ago

If you are stranded on a desert island, which prey should you avoid consuming?

If you are stranded on a desert island, which prey should you avoid consuming?
A) fast mobile prey
B) large prey
C) cryptic prey
D) brightly colored prey

Iridium 60 1 Reply

6 years ago

Coevolution between predator and prey suggests

Coevolution between predator and prey suggests
A) as prey decrease in number, predators will switch prey.
B) as predators become smarter at catching prey, prey will become smarter at escaping predation.
C) as predators feed on prey, pr

mat 105 1 Reply

6 years ago

According to the Red Queen hypothesis,

According to the Red Queen hypothesis,
A) the population density of a predator depends on the population density of its prey.
B) natural selection should favor the most efficient foragers.
C) prey must continually evolve means of avoid

melaa 39 1 Reply

6 years ago

The profitability of a prey item

The profitability of a prey item
A) increases as its handling time (Th) increases.
B) decreases as its search time (Ts) decreases.
C) increases as its energy content (E) decreases.
D) increases as its E/Th increases.

mat 38 1 Reply

6 years ago

According to the optimal foraging theory, a predator will select prey 1 (P1) over prey 2 (P2) whenA) ...

According to the optimal foraging theory, a predator will select prey 1 (P1) over prey 2 (P2) when
A) E1 < E2.
B) Th1 < Th2.
C) E1/Th1 < E2/Th2.
D) Nprey1 > N prey2.

Iridium 83 1 Reply

6 years ago

This figure shows that (Multiple Choice Question)

This figure shows that
A) lynx populations numerically respond to hare populations.
B) lynx become better able to capture prey over time.
C) lynx become worse at capturing prey over time.
D) hares will go extinct over time.

Iridium 108 1 Reply

6 years ago

Which of the following is a positive numerical response of a predator in response to an increase in ...

Which of the following is a positive numerical response of a predator in response to an increase in prey density?
A) decrease in predator mortality rate
B) increase in predator survival rate
C) immigration of predators to an area of hi

mat 53 1 Reply

6 years ago

When predators come together in areas of high prey density, it is referred to as

When predators come together in areas of high prey density, it is referred to as
A) predator satiation.
B) predator preference.
C) a functional response.
D) an aggregative response.

Iridium 58 1 Reply

6 years ago

The maximum number of prey consumed per predator per unit time is limited by

The maximum number of prey consumed per predator per unit time is limited by
A) Nprey.
B) Npredator.
C) Ts.
D) T/Th.

Iridium 51 1 Reply

6 years ago

With a highly abundant prey population size, which component of the functional response is most ...

With a highly abundant prey population size, which component of the functional response is most reduced?
A) handling time
B) prey population
C) search time
D) killing time

mat 69 1 Reply

6 years ago

The sigmoidal relationship between prey density and per capita predation rate in a Type III ...

The sigmoidal relationship between prey density and per capita predation rate in a Type III functional response can be explained by all of the following factors, except
A) prey access to refuge.
B) predator preference.
C) recognition o

melaa 86 1 Reply

6 years ago

When a predator drives down a prey population to a low abundance, it will often

When a predator drives down a prey population to a low abundance, it will often
A) switch prey species.
B) consume prey to extinction.
C) go extinct.
D) decrease handling time of prey.

Iridium 125 1 Reply

6 years ago

European kestrels feed on Microtus voles, with the "kill" rate, defined as the number of ...

European kestrels feed on Microtus voles, with the "kill" rate, defined as the number of prey taken during the breeding season, as linearly proportional to the density of Microtus. This type of functional response is referred to as
A)

Iridium 46 1 Reply

6 years ago

In the Lotka-Volterra model of predator-prey interactions, population growth is regulated through

In the Lotka-Volterra model of predator-prey interactions, population growth is regulated through
A) reproduction for both predator and prey.
B) reproduction for the predator and mortality for the prey.
C) reproduction for the prey and

Iridium 60 1 Reply

6 years ago

Huffaker's experiment involving oranges showed

Huffaker's experiment involving oranges showed
A) predators will always consume prey to extinction.
B) prey will always outlast predators.
C) with enough complexity, predator and prey populations will oscillate.
D) both speci

Iridium 89 1 Reply

6 years ago

In a simple experiment involving only predator and prey with no refuge,

In a simple experiment involving only predator and prey with no refuge,
A) prey will always survive.
B) predators will typically drive their prey to extinction.
C) both populations will oscillate.
D) prey populations will oscillat

mat 90 1 Reply

6 years ago

The net outcome of predator-prey interactions in the basic Lotka-Volterra models is that

The net outcome of predator-prey interactions in the basic Lotka-Volterra models is that
A) the predator drives its prey to extinction and then goes extinct itself.
B) the prey population declines and this causes the predator population to

melaa 101 1 Reply

6 years ago

In the basic Lotka-Volterra equations that describe predator-prey interactions, the growth rate of ...

In the basic Lotka-Volterra equations that describe predator-prey interactions, the growth rate of the prey population (dNprey/dt) is zero when the density of predators (Nprey) is equal to
A) r/N.
B) N/r.
C) r/c.
D) c/r.

melaa 69 1 Reply

6 years ago

In a graph that plots prey population (Nprey) on the x-axis against the number of predator offspring ...

In a graph that plots prey population (Nprey) on the x-axis against the number of predator offspring produced per unit of time on the y-axis, the slope represents the
A) efficiency of predation (c).
B) efficiency with which food is converte

mat 69 1 Reply

6 years ago

A parasitoid (Multiple Choice Question)

A parasitoid
A) is a true predator.
B) actively pursues its prey.
C) attacks the host indirectly by laying its eggs in or on the prey's body.
D) preys only on animals.

mat 55 1 Reply

6 years ago

Which of the following is functionally a true predator?

Which of the following is functionally a true predator?
A) parasite
B) planktivore
C) grazer
D) parasitoid

Iridium 48 1 Reply

6 years ago

A true predator is a species that

A true predator is a species that
A) feeds upon any part of any organism, not necessarily killing it.
B) feeds only on animals.
C) kills its prey more or less immediately upon capture.
D) feeds on dead or living prey.

mat 61 1 Reply

6 years ago

An organism that feeds on plant or algal tissues is referred to as a(n)

An organism that feeds on plant or algal tissues is referred to as a(n)
A) herbivore.
B) omnivore.
C) carnivore.
D) decomposer.

melaa 93 1 Reply

6 years ago

Many plants use ________ defenses, such as hairy leaves, thorns, or spines, to deter herbivory.

Iridium 73 1 Reply