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प्रश्न
What’s the solution?
We have to remove insects from the grain without using insecticides.
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उत्तर
- Let the grain dry in the sunlight. The harsh sunlight does not allow eggs and caterpillars to grow in the grain.
- Keep dried neem leaves in the container in which the grains are stored. Neem acts as a repellent for insects.
- Grains like beans are smeared with mud. The mud particles keep the weevils away from infesting the grains.
- The place where grain is stored should be cool and dry. It should be airy. The chances of insect infestations are less in such storage places.
संबंधित प्रश्न
Write one or two word for the following statement/definition :
The physical and biological world where we live in
The use of one of the following will pollute the environment. This one is :
(a) paper carry bags
(b) cotton cloth carry bags
(c) nylon cloth carry bags
(d) jute carry bags
In the course of your observations, did you notice any signs of the presence of living things, though the living things themselves were not seen? For example, did you notice any partly eaten fruits or shells, fallen feathers, animal tracks, dung, droppings, nests, cocoons, eggs, honeycombs, etc.?
Could you observe any microorganisms?
Micro-organisms form a part of the environment.
What are the different purposes for which fuels such as petrol, diesel, kerosene, natural gas, coal, and wood are used?
Give reason.
It is important to conserve the living components of the environment.
Classify the following as natural or man-made.
horse.
Classify the following as natural or man-made.
water hyacinth.
Classify the following as natural or man-made.
dolphin
Classify the following as natural or man-made.
water
Producers are ________.
_______ is the process of converting waste materials into new materials.
These are abiotic factors.
- Sunlight
- Bacteria
- Air
- Plants
Select the mis-matched pair in the following and correct it.
Explain some harmful effects of agricultural practices on the environment.
The abiotic factors are the non-living parts such as sunlight, air, water, and minerals in the soil.
