bio 120 quiz 3 Exam Questions and Answers
with Verified Solutions | Latest Updated 2026
what term refers to the mass of biomass
organic things?
what term describes how much productivity
stuff
accumulates over time?
1. mussel __________ increases 1. productivity; biomass
with 2. x = chlorophyll concentration, y = growth
phytoplankton _________. in
2. what are the x and y axes for carbon
this
graph?
what term describes the growth at primary productivity
the base of food chain?
what term describes the growth at secondary productivity
the higher trophic levels?
what term describes a simplified, food chain
linear diagram that uses a single
organism at each trophic level to
illustrate the main pathway of
carbon
through a system?
,what term describes a species or trophic level
group of species that feeds on one
or more other species?
what is the order of trophic levels? primary producers --> primary consumers
-->
secondary consumers
what term describes a diagram food web
that
shows the overall feeding
relationships between organisms
in
an ecological community?
what term describes feeding on omnivory
multiple trophic levels?
what term describes the available bottom-up perspective
biomass at the base of the food
chain can determine abundances
of
organisms at higher trophic levels?
how does el nino affect reduction of phytoplankton; fish starve and
phytoplankton? affect fish decrease; reduces food security
populations? affect people?
, on the south american coast, wind south; offshore; nutrient-rich water
blows from the ______, the coriolis
force moves surface water
_______, and
deep, cold, ________ water
replaces it.
during "la nina" years, trade winds east to west; western
blow from _____ to ______, warm
water
concentrates in the _________
pacific
during "el nino" years, decline; sloshes; thermocline; upwelling
trade winds ________,
warm water __________ back
across the
pacific,
the ________ moves deeper,
and ________ no longer brings
cold,
nutrient rich water to the surface
what term describes how predator top-down perspective
abundances determine
abundances
of organisms at lower trophic
levels?
what happens to urchin density urchin density decreases with more otters;
where otters are present? what x = urchin density, y = depth
are x
and y axes for this graph?
with Verified Solutions | Latest Updated 2026
what term refers to the mass of biomass
organic things?
what term describes how much productivity
stuff
accumulates over time?
1. mussel __________ increases 1. productivity; biomass
with 2. x = chlorophyll concentration, y = growth
phytoplankton _________. in
2. what are the x and y axes for carbon
this
graph?
what term describes the growth at primary productivity
the base of food chain?
what term describes the growth at secondary productivity
the higher trophic levels?
what term describes a simplified, food chain
linear diagram that uses a single
organism at each trophic level to
illustrate the main pathway of
carbon
through a system?
,what term describes a species or trophic level
group of species that feeds on one
or more other species?
what is the order of trophic levels? primary producers --> primary consumers
-->
secondary consumers
what term describes a diagram food web
that
shows the overall feeding
relationships between organisms
in
an ecological community?
what term describes feeding on omnivory
multiple trophic levels?
what term describes the available bottom-up perspective
biomass at the base of the food
chain can determine abundances
of
organisms at higher trophic levels?
how does el nino affect reduction of phytoplankton; fish starve and
phytoplankton? affect fish decrease; reduces food security
populations? affect people?
, on the south american coast, wind south; offshore; nutrient-rich water
blows from the ______, the coriolis
force moves surface water
_______, and
deep, cold, ________ water
replaces it.
during "la nina" years, trade winds east to west; western
blow from _____ to ______, warm
water
concentrates in the _________
pacific
during "el nino" years, decline; sloshes; thermocline; upwelling
trade winds ________,
warm water __________ back
across the
pacific,
the ________ moves deeper,
and ________ no longer brings
cold,
nutrient rich water to the surface
what term describes how predator top-down perspective
abundances determine
abundances
of organisms at lower trophic
levels?
what happens to urchin density urchin density decreases with more otters;
where otters are present? what x = urchin density, y = depth
are x
and y axes for this graph?
