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प्रश्न
Find out the role of microbes in the following:
Soil
Find out the role of microbes in the following and discuss it with your teacher.
Soil
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उत्तर
Microbes are highly useful in maintaining and restoring soil fertility. Soil fertility is determined by its chemical structure and the number and quality of beneficial bacteria. Furthermore, we add biologically derived elements to improve and maintain fertility when the soil’s composition is inadequate and fertility is low. These materials are classified into two basic categories: waste and biofertilisers. We classify wastes into three types: farmyard waste, compost, and green waste. Farmyard waste is the oldest dung known to human beings, consisting of farm animal excrement and plant remains, among other things, that are allowed to partially decompose with the help of soil micro-organisms. These microbes degrade complex organic waste into a dark, amorphous substance known as sludge, which plants can easily consume. Fertiliser dissolves in the soil, improves aeration, and makes it grow better. Biofertilizers are microorganisms that restore soil nutrient levels while maximising ecological benefits and reducing environmental risks.
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संबंधित प्रश्न
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
How do biofertilisers enrich the fertility of the soil?
What are 'biofertilizers'? Explain them with suitable examples.
Give the meaning of the Nif gene.
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
How does the application of the fungal genus, Glomus, to the agricultural farm increase the farm output?
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?
Define biofertilizers. Give two types of fungal biofertilizers
Which one of the following is a free-living bacterial biofertilizer?
Name any two bacterial biofertilizers.
Match the column A with B and rewrite correct pairs.
| A | B | |
| i. | Symbiotic N2 fixing bacteria | VAM |
| ii. | Free-living N2 fixing bacteria | Rhizobium |
| iii. | Phosphate solubilizer | Nostoc |
| iv. | Endomycorrhizae | Microccocus |
Identify the CORRECT statement regarding Ectomycorrhizae.
Which of the following is a free-floating aquatic fern?
Mycorrhiza is a______ which forms a symbiotic association with the underground parts like rhizomes and root of higher plants.
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?
VAM stands for ______.
Anabaena forms symbiotic relationship coralloid roots of ______.
Mycorrhiza forms symbiotic association with ____________ of higher plants.
Blue green algae are used as bio fertilizers because they ____________.
In plant breeding, biofortification is a method ____________.
VAM is a type of ______
Which one of the following is not a biofertilizer?
Some blue-green algae are used as bio fertilisers of their ______.
Mycorrhiza does not help the host plant in ______.
Which one of the following is not a nitrogen-fixing organism?
Give two examples of biofertilizer.
Azolla is used as biofertiliser because it ______.
- Give an example of a genus of fungi that forms mycorhizal association with plants.
- How does the plant derive benefits from this association?
