MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In the figure given below, (C) represents __________ |
| A. | Decaying biomass |
| B. | Plant Biomass |
| C. | Animal Biomass |
| D. | Soil ‘N’ Pool |
| Answer» D. Soil ‘N’ Pool | |
| 2. |
The process under which nitrogen and hydrogen combine to form ammonia under high temperature and pressure conditions is called as _________ |
| A. | biological N2 fixation |
| B. | natural N2 fixation |
| C. | electrical N2 fixation |
| D. | industrial N2 fixation |
| Answer» E. | |
| 3. |
The form of nitrogen absorbed by plants is _________ |
| A. | NO2– |
| B. | N2O |
| C. | NH3 |
| D. | NO |
| Answer» B. N2O | |
| 4. |
Enzymes for nitrogen fixation are found exclusively in eukaryotes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Statement A: Nodule formation involves a direct interaction between Rhizobium and leaves of host plant. Statement B: The differentiation of cortical and pericycle cells lead to nodule formation. |
| A. | Both the statements are true |
| B. | Both the statements are false |
| C. | Statement A is true but Statement B is false |
| D. | Statement B is true but Statement A is false |
| Answer» C. Statement A is true but Statement B is false | |
| 6. |
Which organism is capable of carrying out denitrification? |
| A. | Nitrosomonas |
| B. | Beijernickia |
| C. | Pseudomonas |
| D. | Nitrobacter |
| Answer» D. Nitrobacter | |
| 7. |
Which is the first stable product of nitrogen fixation? |
| A. | N2 |
| B. | NH3 |
| C. | NH4+ |
| D. | NO3– |
| Answer» C. NH4+ | |
| 8. |
Statement A: Legume–bacteria relationship is an example of symbiotic biological nitrogen fixation. Statement B: The association is represented by formation of root knots. |
| A. | Both the statements are true |
| B. | Both the statements are false |
| C. | Statement A is true but Statement B is false |
| D. | Statement B is true but Statement A is false |
| Answer» D. Statement B is true but Statement A is false | |
| 9. |
Nitrogen is a limiting nutrient for both agricultural and natural ecosystems. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following is not a pool for nitrogen cycle? |
| A. | Atmosphere |
| B. | Ocean |
| C. | Soil |
| D. | Biomass |
| Answer» C. Soil | |