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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
The most common carrier of communicable diseases 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 |
Can microorganisms be seen with the naked eye? If not, how can they be seen?
What are the major groups of microorganisms?
Use the Whittaker method to classify bacteria, protozoa, fungi, algae, prokaryotic and eukaryotic microbes.
Who am I?
I have a nucleus and membrane-bound cell organelles.
Who am I?
I am green, but don't have organs.
Draw a neat and labelled diagram.
Different types of bacteria.
Mark the correct one as:
Assertion: Malaria is caused by Protozoa.
Reason: The disease is transmitted by mosquito.
Unscramble the jumbled word underlined in the following statement.
Cells of our body produce santiidobe to fight pathogens
