part 5

Question 1

asymbiotic nitrogen fixation

Answer 1

free living bacteria in the soil fixes the nitrogen.

Question 2

where do the bacteria get the proteins from

Answer 2

they get proteins from the dead organisms in the soil

Question 3

ammonification

Answer 3

the proteins are broken down into amino acids which is further changed into ammonia

Question 4

Nitrification

Answer 4

ammonium ions are oxidized to nitrites by Nitrosococcus and nitrites are oxidized to nitrates by Nitrobacter

Question 5

denitrification

Answer 5

The process by which nitrates are reduced to gaseous compounds (N2) of nitrogen with the help of bacteria’s like Pseudomonas denitrificans, Thiobacillus

Question 6

why is nitrate converted to nitrite and nitrite to ammonia

Answer 6

the nitrate produced cannot be absorbed directly by the plants so the nitrate is reduced to nitrite by nitrate reductase and nitrite to amino acids by nitrite reductase

Question 7

ammonia combines with what to form what

Answer 7

ammonia combines with alpha ketogluterate or oxaloacetic acid to form glutamate or aspartate

Question 8

which plants trap other insects

Answer 8

insectivorous plants like Drosera (sundew) and Venus fly trap traps the insect and take their protein