Ecological Cycles Question Preview (ID: 40688)
1st Test.
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What removes oxygen from the air?
a) respiration
b) photosynthesis
c) sunlight
d) water
Ten percent of energy is transferred from one level to the next level on the energy pyramid. What happens to the other 90% of energy?
a) lost as heat
b) stored as fat
c) stored as protein
d) used in reproduction
Plants are
a) producers
b) consumers
c) omnivores
d) herbivores
An organism that uses energy to produce its own food supply from inorganic compounds is called a(an)
a) autotroph
b) heterotroph
c) consumer
d) detrivore
Nitrogen fixation is carried out primarily by
a) bacteria
b) plants
c) consumers
d) humans
During nitrogen fixation, nitrogen gas is converted to a form that _____ can use
a) plants
b) animals
c) fungi
d) scavangers
The breakdown of dead materials into carbon dioxide and water is called
a) decomposition
b) photosynthesis
c) respiration
d) evaporation
Water leaving the plants is called?
a) transpiration
b) evaporation
c) condensation
d) precipitation
Water that gets heated leaves from the ocean through the process of _______________
a) evaporation
b) condensation
c) precipitation
d) transpiration
Biotic and abiotic factors together make up a(n)
a) ecosystem
b) community
c) individual species
d) population
When organisms interact and both benefit from the interaction, what term is used to describe this interaction?
a) mutualism
b) parasitism
c) commensualism
d) predator prey
The burning of fossil fuels has the greatest and most direct impact on the
a) carbon cycle
b) nitrogen cycle
c) phosphorous cycle
d) rock cycle
Carbon is removed from the atmosphere through what process?
a) photosynthesis
b) burning fossil fuels
c) respiration
d) deforestation
This process is responsible for excess nitrogen and phosphorus entering streams and oceans.
a) run off
b) respiration
c) emmision
d) decay
Use of agricultural fertilizers adds excess _____ to ecosystems and can cause eutrophication of waters.
a) nitrogen
b) phosphorous
c) carbon
d) nitrogen and phosphorous
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