Ecology (Natural Cycles) Question Preview (ID: 4348)


Natural Cycles And Abiotic Factors. TEACHERS: click here for quick copy question ID numbers.

Which natural cycle involves bacteria fixation?
a) Water
b) O2 /CO2
c) Nitrogen
d) None

Which natural cycle involves infiltration?
a) Water
b) O2 /CO2
c) Nitrogen
d) None

What is transpiration?
a) Water released by animals
b) Water evaporated from a lake
c) Water released from plants
d) Movement of water from one plant to another

What is run-off?
a) Water falling from the sky
b) Water flowing down the land to another water source
c) Water filtering into the ground and becoming groundwater
d) Water collected in a lake

Which is breathed by plants?
a) CO2
b) O2
c) Both O2 and CO2
d) Nitrogen

Which is exhaled by animals?
a) CO2
b) O2
c) Both O2 and CO2
d) Nitrogen

Decaying organisms give off...
a) CO2
b) O2
c) Both O2 and CO2
d) Nitrogen

What organism fixes nitrogen?
a) Virus
b) Bacteria
c) Worms
d) Plants

When do natural cycles end?
a) At the end of the day
b) At the end of a month
c) After 2 years
d) Never

What is the chemical symbol for nitrogen?
a) N1
b) NITRO
c) N2
d) NT

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