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प्रश्न
Why are blue green algae not popular as biofertilisers?
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उत्तर
Blue green algae are not popular as biofertilisers because they causes algal bloom in polluted water bodies.
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संबंधित प्रश्न
What is a heterocyst?
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non-leguminous terrestrial crop.
- Recommend two microbes that can enrich the soil with nitrogen.
- Why do leguminous crops not require such enrichment of the soil?
Name any two bacterial biofertilizers.
Identify the CORRECT statement regarding Mycorrhiza.
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 of the following is/are symbiotic nitrogen fixing microbe?
Mycorrhiza forms symbiotic association with ____________ of higher plants.
An organism used as a biofertiliser for raising soyabean crop prediction is:
Soil microorganisms mainly comprise:
Which one of the following is NOT a nitrogen-fixing organism?
Mycorrhiza does not help the host plant in ______.
Which one of the following is not a nitrogen-fixing organism?
How do mycorrhizal fungi help the plants harbouring them?
Why are cyanobacteria considered useful in paddy fields?
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
Which one of the following statement is correctly matched?
How many statements are true about biofertilizers?
- They are nitrogen fixers.
- They are commercial preparation of live bacteria and fungi.
- Use of biofertilizers is expensive.
- There is only one type of biofertilizer.
- They are classified as inorganic.
