Ecological Cycles Question Preview (ID: 40688)


1st Test. TEACHERS: click here for quick copy question ID numbers.

Water that gets heated leaves from the ocean through the process of _______________
a) evaporation
b) condensation
c) precipitation
d) transpiration

Water leaving the plants is called?
a) transpiration
b) evaporation
c) condensation
d) precipitation

The breakdown of dead materials into carbon dioxide and water is called
a) decomposition
b) photosynthesis
c) respiration
d) evaporation

During nitrogen fixation, nitrogen gas is converted to a form that _____ can use
a) plants
b) animals
c) fungi
d) scavangers

Nitrogen fixation is carried out primarily by
a) bacteria
b) plants
c) consumers
d) humans

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

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

What removes oxygen from the air?
a) respiration
b) photosynthesis
c) sunlight
d) water

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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