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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
What are 'biofertilizers'? Explain them with suitable examples.
What is a heterocyst?
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
How does the activity of each one of the following help in organic farming?
Cyanobacteria
Name any two bacterial biofertilizers.
Define estuary.
______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
State any three benefits of mycorrhiza.
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 |
Anabaena forms symbiotic relationship coralloid roots of ______.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
Which of the following symbiotic microorganisms is nitrogen-fixing?
An organism used as a biofertiliser for raising soyabean crop prediction is:
Soil microorganisms mainly comprise:
Glomus is a ______.
How do mycorrhizal fungi help the plants harbouring them?
Give two examples of biofertilizer.
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?
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:
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.
Endomycorrhizae grow in ______ of higher plants.
Which cyanobacterium lives in association with the water fern Azolla and is widely used in paddy fields?
Which of the following is NOT a primary benefit of using biofertilizers in agriculture?
How do biofertilizers differ from chemical fertilizers in their effect on soil microorganisms?
Which organisms are classified as nitrogen-fixing microbes that convert atmospheric nitrogen into usable forms?
How do the functions of Frankia compare to those of Rhizobium in nitrogen fixation?
