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प्रश्न
Which precautions are necessary for proper decomposition of domestic waste?
उत्तर
Domestic waste refers to the waste which is generated in our houses due to our daily activities. Domestic waste can be either biodegradable or non-biodegradable for example, vegetable and fruit peels are biodegradable whereas batteries, computers, etc are non-biodegradable. biodegardable products can be used for making composts which can be used in parks, plant pots etc. For non-biodegradable products, we need to practice the 3R's, and only after that, they should be discarded as waste. The 3R's are -
- Reduce- Reduce the amount of waste produced.
- Reuse- Reusing a resource in a new way before throwing it.
- Recycle- Making something new from a material rather than throwing it away.
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संबंधित प्रश्न
Match the organisms in Column A with their action in Column B.
| A | B | ||
| (i) | Bacteria | (a) | Fixing Nitrogen |
| (ii) | Rhizobium | (b) | Setting of curd |
| (iii) | Lactobacillus | (c) | Baking of bread |
| (iv) | Yeast | (d) | Causing Malaria |
| (v) | A protozoan | (e) | Causing Cholera |
| (vi) | A Virus | (f) | Causing AIDS |
| (g) | Producing antibodies |
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What are the major groups of microorganisms?
Rewrite the following statement using correct of the option and explain the completed statement.
Process of -- -- -- -- of milk proteins occurs due to lactic acid.
Give a scientific reason.
Use of mutant strains has been increased in industrial microbiology.
Use the Whittaker method to classify bacteria, protozoa, fungi, algae, prokaryotic and eukaryotic microbes.
Find out my partner
| A | B |
| Fungi | Chlorella |
| Protozoa | Bacteriophage |
| Virus | Candida |
| Algae | Amoeba |
| Bacteria | Prokaryotic |
Who am I?
I have a nucleus and membrane-bound cell organelles.
Which are the different types of micro-organisms?
Give reasons.
A refrigerator is used in almost every home.
What are the main features of a microorganism?
How disease causing microorganisms enter into human beings?
Name the four major groups of Microbes.
Unscramble the jumbled word underlined in the following statement.
Cells of our body produce santiidobe to fight pathogens.
Match the names of scientists given in Column A with the discovery made by them given in Column B.
| Column A | Column B |
| (a) Louis Pasteur | (i) Penicillin |
| (b) Robert Koch | (ii) anthrax bacterium |
| (c) Edward Jenner | (iii) Fermentation |
| (d) Alexander Fleming | (iv) small pox vaccine |
| (v) Typhoid |
Paheli watched grandmother making mango pickle. After she bottled the pickle, her grandmother poured oil on top of the pickle before closing the lid. Paheli wanted to know why oil was poured? Can you help her understand why?
Assertion (A): Boiling milk is a method of preservation.
Reason (R): Probiotic is a method of preserving milk.
The major constituent of vinegar is ______.
Assertion: Bacillus Thuringiensis is a biocontrol agent.
Reason: It produces a protein called ‘cry protein’ which kills insect larva.
