Advertisements
Advertisements
Question
What are 'biofertilizers'? Explain them with suitable examples.
Advertisements
Solution
Biofertilizers: The biofertilizers are nitrogen fixing microbes or fungi which enrich the soil with nutrients.
There are 3 major types of biofertilizers i.e. bacterial biofertilizers, cyanobacterial biofertilizers and fungal biofertilizers.
Examples of biofertilizers:
- Nitrogen-fixing symbiotic bacterial biofertilizer - Rhizobium in root nodule of leguminous plants.
- Nitrogen-fixing symbiotic cyanobacterial biofertilizers - Anabaena azollae in Azolla.
- Nitrogen-fixing non-symbiotic cyanobacterial biofertilizers - Nostoc, Anabaena.
- Mycorrhizal Fungal biofertilizer - Ectotrophic mycorrhiza and Endotrophic mycorrhiza - VAM.
APPEARS IN
RELATED QUESTIONS
Define biofertilizers. Give two types of fungal biofertilizers
How does the activity of each one of the following help in organic farming?
Cyanobacteria
State any three benefits of Biofertilizers.
Match the Column I (Organisms) with the Column II (Products they produce) and select the correct option.
| Column I | Column II | ||
| i. | Lactobacillus | p. | Cheese |
| ii. | Saccharomyces cerevisiae | q. | Curd |
| iii. | Aspergillus niger | r. | Citric Acid |
| iv | Acetobacter aceti | s. | Bread |
| t. | Acetic Acid |
Which one of the following is NOT a nitrogen-fixing organism?
Give two examples of biofertilizer.
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
- Give an example of a genus of fungi that forms mycorhizal association with plants.
- How does the plant derive benefits from this association?
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
Which of the following bacteria do not solubilize the insoluble rock phosphate?
