Q. No.Iron-molybdenum nitrogenase system is present in:
1. All diazotrophs
2. Free living diazotrophs
3. Symbiotic diazotrophs
4. None of these
1. All diazotrophs
2. Free living diazotrophs
3. Symbiotic diazotrophs
4. None of these
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In plants with nitrogen fixing bacteria (such as alfalfa or soybeans), the presence of oxygen will poison the bacterium. Which of the following acts as a natural defense against oxygen toxicity by scavenging free oxygen in these systems?
| 1. Hemoglobin | 2. Myoglobin |
| 3. Leghemoglobin | 4. Methemoglobin |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify a free living anaerobic nitrogen fixing microbe:
| 1. Azotobacter | 2. Beijernickia |
| 3. Nostoc | 4. Rhodospirillum |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Conversion of ammonium to nitrate during nitrogen cycle is called as:
1. Nitrogen assimilation
2. Denitrification
3. Nitrification
4. Nitratification
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A microbially facilitated process of dissimilatory nitrate reduction that may ultimately produce molecular nitrogen () through a series of intermediate gaseous nitrogen oxide products is called as:
| 1. Nitrogen assimilation | 2. Denitrification |
| 3. Nitrification | 4. Nitratification |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
For biological fixation of one molecule of nitrogen into two molecules of ammonia, the number of ATP molecules needed is:
| 1. 4 | 2. 8 |
| 3. 12 | 4. 16 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In plants, ammonia reacts with alpha ketoglutaric acid to form glutamic acid in a process called as:
| 1. Deamination | 2. Reductive amination |
| 3. Transamination | 4. Aminoacylation |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Name the amino acid from which 17 other amino acids are formed by transamination in plants?
| 1. Glycine | 2. Lysine |
| 3. Tryptophan | 4. Glutamic acid |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
If you have carefully read the role of macronutrients in your NCERT, you should be able to tell the name of the mineral that plays an important role in several carbon dioxide transfers catalyzed by carboxylase enzymes. The mineral is:
1. Magnesium
2. Sulfur
3. Iron
4. Calcium
Primary macronutrients are heavily used by plants. Based on your understanding of role of macronutrients , section 12.2.2, NCERT, can you predict which of the following may be a secondary macronutrient for plants?
1. Nitrogen
2. Phosphorus
3. Potassium
4. Calcium
© 2024 GoodEd Technologies Pvt. Ltd.