Question

question 4 (matching worth 4 points)
match each term with its description.

term:
nitrogen fixation
nitrification
assimilation
denitrification

definition:
a) the process that converts nitrogen gas to a usable nitrogen for plants
b) plants absorb nitrates or ammonium ions from the soil
c) the process through which bacteria convert nitrates to nitrogen gas
d) the process by which bacteria convert ammonia to nitrites and nitrates

Explanation:

• Nitrogen fixation: The definition "The process that converts nitrogen gas to a usable nitrogen for plants" (A) matches, as nitrogen fixation is about converting atmospheric \(N_2\) to plant - usable forms.
• Nitrification: The definition "The process by which bacteria convert ammonia to nitrites and nitrates" (D) matches, since nitrification involves oxidizing ammonia to nitrites and then nitrates.
• Assimilation: The definition "Plants absorb nitrates or ammonium ions from the soil" (B) matches, as assimilation is when plants take up nitrogen - containing ions from the soil.
• Denitrification: The definition "The process through which bacteria convert nitrates to nitrogen gas" (C) matches, as denitrification is the reduction of nitrates back to \(N_2\) gas.

Answer:

• Nitrogen fixation - A) The process that converts nitrogen gas to a usable nitrogen for plants
• Nitrification - D) The process by which bacteria convert ammonia to nitrites and nitrates
• Assimilation - B) Plants absorb nitrates or ammonium ions from the soil
• Denitrification - C) The process through which bacteria convert nitrates to nitrogen gas