#Question id: 10358
#Environmental Science
Which of the following essential micronutrients is associated with nitrate reductase enzyme found in higher plants?
#Question id: 10360
#Environmental Science
How much ATP require in the nitrogen fixation or conversion of ammonium assimilation in the system?
#Question id: 10362
#Environmental Science
Bacteria can convert atmospheric nitrogen into ammonia,
Several form symbiotic associations with higher plants is given below;
HOST PLANT
N-FIXING SYMBIONTS
A)
Gunnera
i) Frankia
B) Azolla
ii)
Acetobacter
C)
Leguminous
iii) Azospirillum
D) Actinorhizal
iv) Nostoc
E) Sugarcane
v) Anabaena
F) Miscanthus vi) Sinorhizobium
Which of the following combination with the host plants and
n-fixing symbionts is CORRECT?
#Question id: 10363
#Environmental Science
Free living nitrogen fixing takes place as shown in the following;
TYPE
N-FIXING GENERA
A)
Cyanobacteria (blue-green algae) i)
Bacillus
B)
Aerobic
ii)
Clostridium
C)
Facultative
iii) Anabaena
D)
Anaerobic nonphotosynthetic iv)
Rhodospirillum
E)
Anaerobic photosynthetic
v) Azospirillum
#Question id: 10364
#Environmental Science
Which of the following is the most common type of symbiosis occurs between members of the plant family and soil bacteria?
#Question id: 10365
#Environmental Science
Why the nitrogenase enzymes catalyzes the nitrogen fixation reaction only in microanaerobic or anaerobic conditions?