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प्रश्न
State whether the following statement is true or false. Explain your statement.
Tomato wilt is a viral disease.
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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
Alcohol is produced with the help of _________.
Can microorganisms be seen with the naked eye? If not, how can they be seen?
Match the pairs.
| ‘A’ group | ‘B’ group | ||
| a. | Xylitol | 1. | Pigment |
| b. | Citric acid | 2. | To impart sweetness |
| c. | Lycopene | 3. | Microbial restrictor |
| d. | Nycin | 4. | Protein binding emulsifier |
| 5. | To impart acidity | ||
Who am I?
I have a nucleus and membrane-bound cell organelles.
Who am I?
I reproduce mainly by cell division.
Who am I?
I am green, but don't have organs.
Arrange the following in ascending order of size Bacteria, Fungi, Viruses, Algae.
Mark the correct one as:
Assertion: Malaria is caused by Protozoa.
Reason: The disease is transmitted by mosquito.
Name the four major groups of Microbes.
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?
