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प्रश्न
Complete the paragraph using proper words:
(Mechanical, Rhizobium, Aquatic, Toxic, CO2, Nitrogen, Pseudomonas, Amoeba, Bacteria, Hydrocarbons)
Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to _______ organisms. It is not easy to remove the oil layer from surface of water by _______ method. However, bacteria like _______ spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these _______ are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the _______ and bring about the reaction of carbon with oxygen. _______ and water is formed in this process.
उत्तर
Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to aquatic organisms. It is not easy to remove the oil layer from surface of water by mechanical method. However, bacteria like pseudomonas spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these bacteria are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the hydrocarbons and bring about the reaction of carbon with oxygen. CO2 and water is formed in this process.
संबंधित प्रश्न
A) Lack of management of which factor is shown in the picture?
B) How can that factor be managed with the help of microbes?
C) How the oil spills in oceans are cleared?
Why is it necessary to ban the use of plastic bags?
Complete the following conceptual picture related to environmental management.
Answer the following.
Which plants are cultivated to obtain the fuel?
Answer the following.
How does the bread become spongy?
Give reasons.
Fungus grows quickly in moist or humid conditions.
Nowadays, ___________ are used for treatment of diarrhoea and treatment of poultry also.
__________ is a powerful antibiotic against treatment of tuberculosis.
Find an odd one out.
Antibiotics cannot be obtained from a variety of bacteria and fungi.
What is added to impart thickness to instant soup?
Give scientific reason.
The landfill pit is lined with plastic sheets.
Write a short note.
Land filling sites
How is soil pollution controlled by microbes?
Why should we use bioinsecticides?
What is the use of antibiotics to human and other animals?
Read the following paragraph and write the answers to the questions asked.
Sulphuric acid is present in the acid rain and materials coming out of mines. You know that erosion of metals present in statues, bridges and buildings occurs due to it. Sulphuric acid is a source of energy for some species of bacteria like Acidiphilium spp. and Acidithiobacillus ferrooxidans. Hence, these bacteria can control the soil pollution occurring due to acid rain. Water soluble salts of uranium are present in the wastes produced during electroplating and in effluent released in the environment from the atomic energy plant. Geobacter convert these salts of uranium into insoluble salts and thereby prevent those salts from mixing with groundwater sources.
- What causes metal erosion in statues, bridges and buildings?
- Sulphuric acid is the source of energy for which bacteria?
- What kind of pollution do these bacteria control?
- What are the water soluble salts in atomic energy plants and in the process of electroplating?
- Which bacteria prevent these salts from mixing with ground water by converting them Into insoluble salts?
Which enzyme was used earlier for cheese production?
Complete the chart on production of beverages.
| S. No. | Fruit | Microbe used | Role of microbe used | Name of beverage |
| (a) | Caffea arabica | ______ | Separating seeds from fruit | Coffee |
| (b) | Theobroma cacao | Candida, Hansenula, Pichia, Saccharomyces | ______ | Cocoa |
