UMN BIOL 2003- Ecology Exam 1
questions with correct answers
ecology - correct answer ✔✔ Scientific study of interactions among organisms and between
organisms and their environment
effect of temperature on organismal distribution - correct answer ✔✔ o Frost limits distribution
of tropical plants because it cell freezing is lethal
o High temperatures limit plants and animals because they cannot survive with higher than
optimum internal temperatures
o Affects of temperature are increased by wind
effect of water on organismal distribution - correct answer ✔✔ o Plants can only survive where
there is available water
o Water locked in permafrost becomes unavailable
o Animals' distributions are dependent on plant distribution because plants are their food
source
effect of light on organismal distribution - correct answer ✔✔ o Aquatic plants limited to the
photic zone- where light is sufficient and photosynthesis can occur
o Some terrestrial plants grow best in the shade where others thrive best in direct sunlight
effect of salinity on organismal distribution - correct answer ✔✔ o High salinity can affect crop
yield and plant growth in terrestrial habitats
o Affects osmosis in aquatic environments
, photic zone - correct answer ✔✔ Portion of the marine biome that is shallow enough for
sunlight to penetrate.
subsidence zones - correct answer ✔✔ Areas of high pressure that are the sites of the world's
tropical deserts because the subsiding air is relatively dry, having released all of its moisture
over the equator.
intertropical convergence zone (ICT) - correct answer ✔✔ the area of the Earth that receives the
most intense sunlight, where the ascending branches of the two Hadley cells converge
coriolis force - correct answer ✔✔ causes the apparent deflection of winds from a straight path
adiabatic cooling - correct answer ✔✔ the cooling effect of reduced pressure on air as it rises
higher in the atmosphere and expands
rain shadow - correct answer ✔✔ a region with dry conditions found on the leeward side of a
mountain range as a result of humid winds from the ocean causing precipitation on the
windward side
biome - correct answer ✔✔ A group of ecosystems that share similar climates and typical
organisms, distribution affected by temperature and precipitation
lentic habitat - correct answer ✔✔ standing body of water
lotic habitat - correct answer ✔✔ flowing water habitat
Oligotrophic - correct answer ✔✔ young lake, clear water and little plant life
eutrophic - correct answer ✔✔ lake rich in dissolved nutrients, low water clarity
questions with correct answers
ecology - correct answer ✔✔ Scientific study of interactions among organisms and between
organisms and their environment
effect of temperature on organismal distribution - correct answer ✔✔ o Frost limits distribution
of tropical plants because it cell freezing is lethal
o High temperatures limit plants and animals because they cannot survive with higher than
optimum internal temperatures
o Affects of temperature are increased by wind
effect of water on organismal distribution - correct answer ✔✔ o Plants can only survive where
there is available water
o Water locked in permafrost becomes unavailable
o Animals' distributions are dependent on plant distribution because plants are their food
source
effect of light on organismal distribution - correct answer ✔✔ o Aquatic plants limited to the
photic zone- where light is sufficient and photosynthesis can occur
o Some terrestrial plants grow best in the shade where others thrive best in direct sunlight
effect of salinity on organismal distribution - correct answer ✔✔ o High salinity can affect crop
yield and plant growth in terrestrial habitats
o Affects osmosis in aquatic environments
, photic zone - correct answer ✔✔ Portion of the marine biome that is shallow enough for
sunlight to penetrate.
subsidence zones - correct answer ✔✔ Areas of high pressure that are the sites of the world's
tropical deserts because the subsiding air is relatively dry, having released all of its moisture
over the equator.
intertropical convergence zone (ICT) - correct answer ✔✔ the area of the Earth that receives the
most intense sunlight, where the ascending branches of the two Hadley cells converge
coriolis force - correct answer ✔✔ causes the apparent deflection of winds from a straight path
adiabatic cooling - correct answer ✔✔ the cooling effect of reduced pressure on air as it rises
higher in the atmosphere and expands
rain shadow - correct answer ✔✔ a region with dry conditions found on the leeward side of a
mountain range as a result of humid winds from the ocean causing precipitation on the
windward side
biome - correct answer ✔✔ A group of ecosystems that share similar climates and typical
organisms, distribution affected by temperature and precipitation
lentic habitat - correct answer ✔✔ standing body of water
lotic habitat - correct answer ✔✔ flowing water habitat
Oligotrophic - correct answer ✔✔ young lake, clear water and little plant life
eutrophic - correct answer ✔✔ lake rich in dissolved nutrients, low water clarity
