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प्रश्न
Disease-causing microorganisms are called pathogens.
विकल्प
True.
False
उत्तर
Disease-causing microorganisms are called pathogens- True.
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संबंधित प्रश्न
Microorganisms can be seen with the help of a _________.
Alcohol is produced with the help of _________.
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 |
Find out my partner
| A | B |
| Fungi | Chlorella |
| Protozoa | Bacteriophage |
| Virus | Candida |
| Algae | Amoeba |
| Bacteria | Prokaryotic |
State whether the following statement is true or false. Explain your statement.
Tomato wilt is a viral disease.
Who am I?
I can produce my replica.
Who am I?
I am green, but don't have organs.
Draw a neat and labelled diagram.
Different types of bacteria.
Draw a neat and labelled diagram.
Bacteriophage.
Give reasons.
A refrigerator is used in almost every home.
Mark the correct one as:
Assertion: Malaria is caused by Protozoa.
Reason: The disease is transmitted by mosquito.
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.
‘Cry’ protein is produced by the bacteria ______.
Assertion: Bacillus Thuringiensis is a biocontrol agent.
Reason: It produces a protein called ‘cry protein’ which kills insect larva.
Name the scientist who first discovered the penicillin antibiotic. Can you name any other known antibiotic?
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