Mastering Biology Chapter 53 Population
Dynamics Tutorials questions well answer
You are doing a mark-recapture experiment to determine the
population size of the Mend Aliens living on an island in my back
yard. Initially, you catch and mark 130 Mend Aliens, which you
then release. Next, you capture 90 Mend Aliens, of which 20 are
marked. What is your estimate of the population size of Mend
Aliens living on the island in my back yard? - Ans>> 585
Mark-Recapture Method - Ans>> A sampling technique used to
estimate wildlife populations.
,[(Number Marked) x (Total Caught Second Time)]/(Number of
marked recaptures)
Assume there are 200 MendAliens living on an island in my back
yard. If my island has an area of 20 hectares, what is the
population density of MendAliens in terms of MendAliens per
hectare? - Ans>> 10 MendAliens per hectare
Population Density - Ans>> Population density = size of
population/ area of land
The mark-recapture method would be best for sampling a
population of _____. - Ans>> sharks
The mark-recapture method works best for - Ans>> active
species whose individuals tend to be highly mobile.
3 types of survival ship curves - Ans>> 1. Species with many
young, but few survive to adulthood
2. Species with few young and a large percent survive to
adulthood
3. Intermediate species with a mortality rate constant over its
lifespan.
Which of these species typically has a mortality rate that remains
fairly constant over an individual's life span? - Ans>> Robins
, Oyster populations are primarily, if not exclusively, composed of
_____. - Ans>> Adults
Which of these organisms has a survivorship curve similar to that
of oysters? - Ans>> Grasses
Which of these organisms has a survivorship curve similar to that
of humans? - Ans>> Elephants
What is represented on the x-axis of this graph? - Ans>>
Individuals' life spans as a percentage of the maximum life span
for the species
Why is a percentage scale used for the x-axis rather than actual
ages? - Ans>> This scale allows you to compare species with
widely varying life spans on the same graph.
For a species with a Type II curve, less than ____% of individuals
survive for 50% of the maximum life span. - Ans>> 10
At 50% of maximum life span, how does survivorship for a Type I
curve compare to survivorship for a Type III curve? - Ans>>
Survivorship for a Type I curve is nearly 1,000 times as great as
survivorship for a Type III curve.
Dynamics Tutorials questions well answer
You are doing a mark-recapture experiment to determine the
population size of the Mend Aliens living on an island in my back
yard. Initially, you catch and mark 130 Mend Aliens, which you
then release. Next, you capture 90 Mend Aliens, of which 20 are
marked. What is your estimate of the population size of Mend
Aliens living on the island in my back yard? - Ans>> 585
Mark-Recapture Method - Ans>> A sampling technique used to
estimate wildlife populations.
,[(Number Marked) x (Total Caught Second Time)]/(Number of
marked recaptures)
Assume there are 200 MendAliens living on an island in my back
yard. If my island has an area of 20 hectares, what is the
population density of MendAliens in terms of MendAliens per
hectare? - Ans>> 10 MendAliens per hectare
Population Density - Ans>> Population density = size of
population/ area of land
The mark-recapture method would be best for sampling a
population of _____. - Ans>> sharks
The mark-recapture method works best for - Ans>> active
species whose individuals tend to be highly mobile.
3 types of survival ship curves - Ans>> 1. Species with many
young, but few survive to adulthood
2. Species with few young and a large percent survive to
adulthood
3. Intermediate species with a mortality rate constant over its
lifespan.
Which of these species typically has a mortality rate that remains
fairly constant over an individual's life span? - Ans>> Robins
, Oyster populations are primarily, if not exclusively, composed of
_____. - Ans>> Adults
Which of these organisms has a survivorship curve similar to that
of oysters? - Ans>> Grasses
Which of these organisms has a survivorship curve similar to that
of humans? - Ans>> Elephants
What is represented on the x-axis of this graph? - Ans>>
Individuals' life spans as a percentage of the maximum life span
for the species
Why is a percentage scale used for the x-axis rather than actual
ages? - Ans>> This scale allows you to compare species with
widely varying life spans on the same graph.
For a species with a Type II curve, less than ____% of individuals
survive for 50% of the maximum life span. - Ans>> 10
At 50% of maximum life span, how does survivorship for a Type I
curve compare to survivorship for a Type III curve? - Ans>>
Survivorship for a Type I curve is nearly 1,000 times as great as
survivorship for a Type III curve.
