Soil
Soil
SOIL : Soil is a precious gift froom nature. Soil supports life on earth. Most people think soil as a layer of dirt and mud. However this layer of mud and dirt is actually filled with life. Food we eat, fibre we use to make see various creatures like earthworm, ants, beetles, etc. Soil provides nutrients to the plants and support their growth. All living organisms depend directly or indirectly on soil. Lets learn more about soil.
The moisture of rock particles and humus is called soil. Soil is an important natural resource. It contains water, dissolved substances, mineral salts and living organisms. Soil forms a very thin layer on the surface of the earth ranging from a few mm to 3 to 4 m.
Major functions of soil are :
1. It supports plant growth by holding the roots firmly and supplying water and nutrients to the plants.
2. It acts as a natural habitat for many organisms like earthworm, fungi, bacteria, ants etc.
3. It is also essential for agriculture which provides us food, clothing and shelter for all.
4. It supplies water and nutrients to plants.
The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also produce harmful effects. They remain in the soil and spoil porous structure of the soil which is essential for plant growth. They also kill the soil organisms like earthworms. Earthworms burrows and loosens the soil and make it porous. Which of the following worms creates soil porousity and get killed by fertilizers ? | |||
| Right Option : C | |||
| View Explanation | |||
Good soil is____ | |||
| Right Option : B | |||
| View Explanation | |||
Assertion (A) : Mountain soil is very fertile. Reason (R) : Mountain soil havee similar composition at different places. | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
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Eshan Arora
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
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Barkha Arora
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Shivam Rana
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
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8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
