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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 १
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 micro-organisms that restore soil nutrients while maximising ecological advantages and reducing environmental dangers.
उत्तर २
Microbes in soil breakdown organic substances, increasing its fertility. Rhizobium bacteria symbiotically occupy nodules on the roots of leguminous plants, converting atmospheric nitrogen into organic forms that the plant can use as a nutrient. Free-living bacteria in soil, such as Azospirillum and Azotobacter, fix atmospheric nitrogen, increasing soil nitrogen levels.
Notes
Students should refer to the answer according to the question.
APPEARS IN
संबंधित प्रश्न
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
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?
Name any two bacterial biofertilizers.
______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
identify the plants with which Anabaena, is associated.
Identify the CORRECT statement regarding Mycorrhiza.
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?
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Anabaena forms symbiotic relationship coralloid roots of ______.
In plant breeding, biofortification is a method ____________.
VAM is a type of ______
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?
Biofertilizers are
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?
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
Match the pairs:
| Column A | Column B | ||
| (i) | Compost making biofertilizer |
(a) | Azotobacter |
| (ii) | N2 fixing biofertilizer | (b) | Mycorrhiza |
| (iii) | Fungal biofertilizer | (c) | Agrobacterium |
| (iv) | Phosphate solubilizing biofertilizer |
(d) | Actinobocteria |
Which one of the following statement is correctly matched?
