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प्रश्न
Write a short note.
Bioinsecticides
उत्तर
- Bioinsecticides are insecticides derived from natural biological agents.
- Bacterial and fungal toxins which can destroy pests and pathogens can be directly integrated into plants with the help of biotechnology.
- Being toxic to insects, they do not consume the plants.
- Similar to bacteria, some species of fungi and viruses are useful as pesticides.
e.g. Spinosad, a byproduct of fermentation is a biopesticide.
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संबंधित प्रश्न
The bread or idli dough rises because of ______.
Complete the following conceptual picture.
Answer the following.
Which fuels are obtained from biomass?
Rewrite the following statement using correct of the option and explain the completed statement.
Chemically, vinegar is -- -- --.
Garbage is converted into ______ by micro-organisms.
Give reasons.
Soil is turned over during tilling.
An enzyme obtained from fungi to produce vegetarian cheese.
Lactic acid : To impart acidity : : Beta carotene : _____________________
Match the following.
| Column A | Column B |
| 1) Baker’s yeast | a) Probiotics |
| 2) Sauerkraut | b) Bread |
| 3) Ligases | c) Antibiotics |
| 4) Penicillin | d) Microbial enzyme |
What is added to impart thickness to instant soup?
Which chemical substances get mixed with the soil by adding chemical pesticides and insecticides in the agricultural industry?
Give scientific reason.
Microbial enzymes are eco-friendly.
Give scientific reason.
A biofuel is an important tool in renewable energy sources.
Give scientific reason.
The landfill pit is lined with plastic sheets.
What is the use of antibiotics to human and other animals?
Briefly explain the environmental role of microorganisms in pollution control?
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?
Microorganism can be seen with the help of a _______.
Match the following
| i. | Probiotic | a. | Kuru |
| ii. | Preservation | b. | Methanogen |
| iii. | Prion | c. | Curd |
| iv. | Biogas | d. | Sugar |
Expand the following:
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