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प्रश्न
State whether the following statement is true or false. Explain your statement.
Tomato wilt is a viral disease.
विकल्प
True
False
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उत्तर
This statement is True.
Explanation:
- In Australia, the tomato wilt disease was first identified in 1919.
- Later, it was found that the tomato-spotted wilt virus is responsible for the disease's spread.
- The disease causes leaves to turn from green to yellow-brown colour.
- As they begin to droop, the leaves' shapes change.
संबंधित प्रश्न
Microorganisms can be seen with the help of a _________.
Carrier of malaria-causing protozoan is ___________.
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 |
Draw a neat and labelled diagram.
Different types of bacteria.
Draw a neat and labelled diagram.
Bacteriophage.
Arrange the following in ascending order of size Bacteria, Fungi, Viruses, Algae.
What are the main features of a microorganism?
How disease causing microorganisms enter into human beings?
While returning from the school, Boojho ate chaat from a street hawker. When he reached home, he felt ill and complained of stomach ache and fell ill. What could be the reason?
Vaccines stimulate the body to produce ______ against the ______ in the microbes.
