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प्रश्न
Which diseases are spread by flies and how?
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उत्तर
Following diseases are spread by flies; dysentery, cholera, typhoid, anthrax, etc. When a fly sits on contaminated material, harmful germs stick to its legs. When the same fly sits on food, the germs get transferred to the food. Thus, a fly spreads various diseases.
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संबंधित प्रश्न
Look at the report of the blood test given here. Which words in the report help us to know that the person has malaria?
Look at Aarti’s blood report and find out the minimum required haemoglobin?
Divide your class into two or three groups. Each group will go around to check one area in school or around it. It must carefully note if water has collected anywhere, and mark ✓ where it finds stagnant water.
| Pot | |
| Cooler | |
| Tank | |
| Any open space in the school ground | |
| Gutter | |
| Any other place |
In your group, make a poster with a message to keep the cooler, tank, drains and the area clean (wherever water collects). Put up your poster in and around your school.
Find out who is responsible for keeping the area around your school clean. Write a letter from your class, reporting your findings and suggestions. Find out to whom the letter should be written and to which office it should be sent.
How can you find out if someone has malaria?
How much did Aarti's haemoglobin go up and how long did it take for that?
Is there a pond or river around your house or school? Go and look around and observe these things:
Where else have you seen algae?
Is there a pond or river around your house or school? Go and look around and observe these things:
Are there plants growing on the side or in water? Find out their names. Draw some of these in your notebook.
Is there a pond or river around your house or school? Go and look around and observe these things:
What else can you see in the water? Make a list.
