Question

Biofertilizers Include

• A. Bacteria
• B. Cyanobacteria
• C. Mycorrhizal Fungi
• D. All Of These

Answer 1

The correct option is D

All Of These

The correct option is D, All Of These
Explanation of correct option-

1. A bio-fertilizer is a substance which contains living microorganisms which, when applied to seeds, plant surfaces, or soil, colonize the rhizo-sphere or the inside of the plant and promotes growth by increasing the availability of nutrients to the host plant.
2. Bacteria like Rhizobium, Nitrobacter help in fixing nitrogen in the soil.
3. Cyanobacteria have an emerged potential as biofertilizer. They are gram-negative oxygenic photosynthetic autotrophic organisms.
4. They have the ability to utilize CO₂, water, and nutrients to convert solar energy into biomass.
5. They are one of the most primitive photosynthetic prokaryotes that require minimum nutrients for growth.
6. Mycorrhizal fungi is an association of fungi and host plant.
7. Fungi helps in absorbing phosphorus which is required by the plants for their growth.
8. Hence, Mycorrhiza is used as biofertilizer.

Final answer: Biofertilizers Include Bacteria, Cyanobacteria and Mycorrhizal fungi