Ecology Part 1

What are the four most important materials needed by living organisms?

• water, carbon, oxygen, nitrogen
• water, food, oxygen, carbon
• water, carbon, nitrogen, phosphorous
• water, carbon, food, phosphorous

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The conversion of ammonium to nitrate is called what?

• nitrification
• renitrification
• denitrification
• unnitrification

The conversion of nitrate to nitrogen gas is called what?

• nitrification
• renitrification
• denitrification
• unnitrification

What is it called when water vapor cools and changes into a liquid?

• condensation
• respiration
• precipitation
• evaporation

Tags

NGSS.MS-ESS2-4

Which of the following is NOT a stage of the nitrogen cycle?

• organisms breathe in nitrogen gas
• organisms release nitrogen compounds via waste or decomposition
• bacteria convert unusable nitrogen to usable nitrogen
• plants absorb nitrogen compounds from the soil

Which of the following is NOT part of the carbon cycle?

• condensation
• photosynthesis
• combustion
• respiration

Which of these steps is part of the nitrogen cycle AND the phosphorous cycle?

• it starts off inside underwater rocks and dirt
• bacteria convert it into organic compounds
• animals leaving waste and death and decay release it back into the soil
• rain water and ocean waves break off pieces, putting it back into the ecosystem

Tags

NGSS.MS-LS2-3

Which of these is in both the carbon cycle AND the phosphorous cycle?

• erosion
• respiration
• photosynthesis
• combustion

Which type of bacteria would transform nitrate into nitrogen gas?

• nitrogen-fixing
• denitrifying
• nitrifying
• nitrogen-defixing

Bacteria that cause nitrification in the soil cause nitrogen to change from _________ to _________.

• nitrogen gas; ammonia
• nitrogen gas; organic nitrogen
• ammonia; nitrate
• nitrate; ammonia