The fertility of soil is determined by the capacity of the soil to sustain the life of plants by supplying the required nutrients. Soil rich in nutrients is said to be fertile, while soil deficient in nutrients is said to be infertile. The quality of soil is determined by the amounts of humus present in it. Humus makes the soil porous. So, water and air can easily go deep inside the soil
Soil has been used for agricultural purposes since ancient times. But, there are some agricultural practices which deprive the soil of its nutrients. For example, growing the same crop in the same soil repeatedly for years (known as mono culture) reduces soil fertility. This is because the crop draws nutrients from the soil, and growing it repeatedly makes the soil deficient in these nutrients. The infertility of soil caused by mono culture can be avoided by adopting the following methods.
Which of the following methods are used to avoid the infertility of soil caused by mono-culture ? | |||
Right Option : D | |||
View Explanation |
Soil rich in nutrients is said to be _____________________. | |||
Right Option : A | |||
View Explanation |
Which of the following are correct : (a) The fertility of soil is determined by the capacity of the soil to sustain the life of plants by supplying the required nutrients. (b) Soil rich in nutrients is said to be fertile, while soil deficient in nutrients is said to be infertile. | |||
Right Option : C | |||
View Explanation |
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Being 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.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
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
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My 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.
One 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.
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
My 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.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.