BIO 320 LIFE 320 EXAM 2
Phenotypic plasticity - CORRECT REPLY>>>>>>-organisms are
favored that can modify their phenotypes
Acclimation - CORRECT REPLY>>>>>>-change in phenotype in
response to environmental change
i.e. thick coat, high RBC count
it is costly
generally reversible
Polyphenic traits - CORRECT REPLY>>>>>>-traits with multiple
discrete phenotypes based on environmental conditions
Life history - CORRECT REPLY>>>>>>-the schedule of the life of
an individual in a species
age, number offsrring, life span
includes behavioral and physiological adaptations
Evolution acts to ____ - CORRECT REPLY>>>>>>-maximize
optimal life histories
,Tradeoffs in life history - CORRECT REPLY>>>>>>-investment in
one aspect of reprod. takes away from another
David Lack's theory - CORRECT REPLY>>>>>>-life history traits
influence evolutionary fitness
LH vary in a consistent way with respect to factors in the enviro
Life histories are subject to experimental tests
Lack's hypothesis - CORRECT REPLY>>>>>>-change the # of
eggs per clutch by changing food supply
Lecithotrophy - CORRECT REPLY>>>>>>-A form of development
in which the embryo receives no nutrition other than the yolk
originally contained within its egg
-fewer large larvae
Planktotrophy - CORRECT REPLY>>>>>>-feed on plankton,more
and smaller larvae
Female sand crickets - CORRECT REPLY>>>>>>-long winged
, -resources allocated to flight
-delayed ovary development
short winged:
-poorly developed wings means limited ability to fly
-rapid ovary development
fecundity - CORRECT REPLY>>>>>>--depends on size
-maturity and fecundity are both size dependent
-maturity rage is vast amongst organisms
Ectothermic animals - CORRECT REPLY>>>>>>-production of
offspring in fish increases with age
semelparity - CORRECT REPLY>>>>>>-Reproduction in which an
organism produces all of its offspring in a single event; also known as
big-bang reproduction.
-most insects and other invertebrates
-some fish and many plants
-environmental effect can be very bad if ruins all offspring
Phenotypic plasticity - CORRECT REPLY>>>>>>-organisms are
favored that can modify their phenotypes
Acclimation - CORRECT REPLY>>>>>>-change in phenotype in
response to environmental change
i.e. thick coat, high RBC count
it is costly
generally reversible
Polyphenic traits - CORRECT REPLY>>>>>>-traits with multiple
discrete phenotypes based on environmental conditions
Life history - CORRECT REPLY>>>>>>-the schedule of the life of
an individual in a species
age, number offsrring, life span
includes behavioral and physiological adaptations
Evolution acts to ____ - CORRECT REPLY>>>>>>-maximize
optimal life histories
,Tradeoffs in life history - CORRECT REPLY>>>>>>-investment in
one aspect of reprod. takes away from another
David Lack's theory - CORRECT REPLY>>>>>>-life history traits
influence evolutionary fitness
LH vary in a consistent way with respect to factors in the enviro
Life histories are subject to experimental tests
Lack's hypothesis - CORRECT REPLY>>>>>>-change the # of
eggs per clutch by changing food supply
Lecithotrophy - CORRECT REPLY>>>>>>-A form of development
in which the embryo receives no nutrition other than the yolk
originally contained within its egg
-fewer large larvae
Planktotrophy - CORRECT REPLY>>>>>>-feed on plankton,more
and smaller larvae
Female sand crickets - CORRECT REPLY>>>>>>-long winged
, -resources allocated to flight
-delayed ovary development
short winged:
-poorly developed wings means limited ability to fly
-rapid ovary development
fecundity - CORRECT REPLY>>>>>>--depends on size
-maturity and fecundity are both size dependent
-maturity rage is vast amongst organisms
Ectothermic animals - CORRECT REPLY>>>>>>-production of
offspring in fish increases with age
semelparity - CORRECT REPLY>>>>>>-Reproduction in which an
organism produces all of its offspring in a single event; also known as
big-bang reproduction.
-most insects and other invertebrates
-some fish and many plants
-environmental effect can be very bad if ruins all offspring
