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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?
Give the meaning of the Nif gene.
How does the application of the fungal genus, Glomus, to the agricultural farm increase the farm output?
______ are nitrogen fixing micro-organisms.
Which of the following is a free-floating aquatic fern?
Identify the CORRECT statement regarding Mycorrhiza.
From the following pairs of microbes, identify the pair that has both the microbes that can be used as 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 |
By application of ____________ yield of paddy field can be increased.
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Anabaena forms symbiotic relationship coralloid roots of ______.
Mycorrhiza forms symbiotic association with ____________ of higher plants.
In plant breeding, biofortification is a method ____________.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
Which one of the following is not a biofertilizer?
Which one of the following is NOT a nitrogen-fixing organism?
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.
Anabaena
Which one of the following statement is correctly matched?
Azolla is used as biofertiliser because it ______.
Which of following organisms cannot fix nitrogen?
- Azotobacter
- Oscillatoria
- Anabaena
- Volvoх
- Nostoc
Choose the correct answer from the options given below:
Which of the following bacteria do not solubilize the insoluble rock phosphate?
Which of the following organisms is a nitrogen-fixing bacterium that forms a symbiotic association with leguminous plants?
Which cyanobacterium lives in association with the water fern Azolla and is widely used in paddy fields?
