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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
Give the meaning of the Nif gene.
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
Define biofertilizers. Give two types of fungal biofertilizers
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
Identify free-living bacterial bio-fertilizer.
Name any two bacterial biofertilizers.
Define estuary.
State any three benefits of Biofertilizers.
______ are nitrogen fixing micro-organisms.
identify the plants with which Anabaena, is associated.
Which of the following is a free-floating aquatic fern?
From the following pairs of microbes, identify the pair that has both the microbes that can be used as Biofertilizers.
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 |
VAM stands for ______.
Mycorrhiza forms symbiotic association with ____________ of higher plants.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
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?
How do mycorrhizal fungi help the plants harbouring them?
Give two examples of biofertilizer.
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 |
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
