BSC 116 CH 53 HW/QUIZ WITH COMPLETE QUESTIONS AND
ANSWERS A+ GRADED
For a species with a Type II curve, less than ____% of individuals survive for 50% of the
maximum life span.
-0.1
-0.5
-1
-10 - ANSWER 10
At 50% of maximum life span, how does survivorship for a Type I curve compare to
survivorship for a Type III curve?
-Survivorship is equal for the two curves.
-Survivorship for a Type I curve is twice as great as survivorship for a Type III curve.
-Survivorship for a Type I curve is nearly 1,000 times as great as survivorship for a Type
III curve.
-Survivorship for a Type I curve is 100 times as great as survivorship for a Type III curve.
For species with a Type III curve, most individuals reach the maximum life span.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Not supported
According to this graph, species that exhibit a Type III curve typically produce large
numbers of offspring.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Cannot be determined from this
graph
, In species that exhibit a Type II survivorship curve, individuals are no more likely to die
at one stage of the life cycle than another.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Supported
Which of these species typically has a mortality rate that remains fairly constant over an
individual's life span?
-oysters
-robins
-elephants
-grasses
-humans - ANSWER robins (The mortality rate of robins remains relatively constant
throughout their life span.)
Oyster populations are primarily, if not exclusively, composed of _____.
-prereproductive oysters
-larval and juvenile oysters
-adults
-larvae
-juveniles - ANSWER adults (Young oysters have a very high mortality rate; older oysters
have a much lower mortality rate. Thus, most oyster populations consist primarily of
older individuals.)
Which of these organisms has a survivorship curve similar to that of oysters?
-humans
-grasses
-cats
-robins
ANSWERS A+ GRADED
For a species with a Type II curve, less than ____% of individuals survive for 50% of the
maximum life span.
-0.1
-0.5
-1
-10 - ANSWER 10
At 50% of maximum life span, how does survivorship for a Type I curve compare to
survivorship for a Type III curve?
-Survivorship is equal for the two curves.
-Survivorship for a Type I curve is twice as great as survivorship for a Type III curve.
-Survivorship for a Type I curve is nearly 1,000 times as great as survivorship for a Type
III curve.
-Survivorship for a Type I curve is 100 times as great as survivorship for a Type III curve.
For species with a Type III curve, most individuals reach the maximum life span.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Not supported
According to this graph, species that exhibit a Type III curve typically produce large
numbers of offspring.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Cannot be determined from this
graph
, In species that exhibit a Type II survivorship curve, individuals are no more likely to die
at one stage of the life cycle than another.
-Supported
-Not supported
-Cannot be determined from this graph - ANSWER Supported
Which of these species typically has a mortality rate that remains fairly constant over an
individual's life span?
-oysters
-robins
-elephants
-grasses
-humans - ANSWER robins (The mortality rate of robins remains relatively constant
throughout their life span.)
Oyster populations are primarily, if not exclusively, composed of _____.
-prereproductive oysters
-larval and juvenile oysters
-adults
-larvae
-juveniles - ANSWER adults (Young oysters have a very high mortality rate; older oysters
have a much lower mortality rate. Thus, most oyster populations consist primarily of
older individuals.)
Which of these organisms has a survivorship curve similar to that of oysters?
-humans
-grasses
-cats
-robins
