Advertisements
Advertisements
प्रश्न
Give reason for the following.
Mosquitoes can be controlled by preventing stagnation of water though they do not live in water. Why?
Advertisements
उत्तर
Though mosquitoes, live on land, water is their breeding ground their larvae grow in water. Water stagnation is the collecting of water in a small area, without any activity. Mosquitoes lay eggs on such a surface.
If water stagnation is prevented, their larvae cannot survive, thus reducing the mosquito population.
APPEARS IN
संबंधित प्रश्न
Drying the food grains from forms under the hot sun is called ______.
Salt is a ______ type of food preservative.
Look at the pictures given below. Which one is good for health? Why?
![]() |
![]() |
Name any two naturally occuring toxic substances in food.
Give reason for the following.
Raw vegetables and fruits are kept in refrigerators, whereas jams and pickles can be kept outside.
In ______, the food materials are kept inside a cold room in a temperature range of 23°C to 30°C.
The addition of oil in pickles prevents the contact of air with the pickle.
What shall we do?
We have purchased a large quantity of fruits and vegetables.
Explain why this happens and suggest possible remedies.
Cut fruits have turned black.
Give reason.
Nowadays, food is served buffet style during large gatherings.


