Telangana SCERT Class 9 Biology Chapter 10 Solution – Soil Pollution. Here in this post we provides Class 9 Biology Soil Pollution Telangana State Board Solution. Telangana State Board English Class IX Medium Students can download this Solution to Solve out Improve Your Learning Questions and Answers.
Telanagana State Board Class 9 Biology Chapter 10 Soil Pollution Solution:
Q1. Define soil pollution:
Ans- Soil pollution can be defined as the buildup in soils of persistent toxic compounds, chemicals, salts, radioactive materials, or disease causing agents, which have adverse effect on plant growth and animal health.
Q2. Chemical fertilizers are useful to crops. How do they cause environmental pollution?
Ans- Chemical fertilizers are useful to crops but they cause environmental pollution. Fertilizers contaminate the soil with impurities, which come from raw materials used for their manufacture. Use of chemical fertilizers accumulate the soil and can be poisonous to the crops.
Q3. Describe friendly methods to profitably dispose off human waste and cattle waste?
Ans- Proper methods should be adopted for management of solid waste disposal. Solid waste management includes activities like collection, transfer and transport to suitable sites, and safe disposal of wastes by methods which are environmentally compatible. The pyrolysis is a process of combustion in the absence of oxygen or material burnt under controlled atmosphere of oxygen. Cowdung which releases methane in atmosphere which is processed further in gobar gas plants to produce gobar gas and good manure.
Q4. What steps can be taken to reduce pollution due to particulate matter from industries?
Ans- Industrial wastes can be treated physically chemically and biologically until they are less hazardous. Industries release the particulate matter which causes pollution and harmful to humans. To reduce the pollution industries should avoid the use of chemicals in their work. They should avoid dumping of plastics in open places, this causes various diseases. To reduce pollution industries should take care of the machines which release gases.
Q5. What is medical waste? Why it is called hazardous? What is the safe way to dispose medical waste?
Ans- Biomedical or hospital waste generated during diagnosis, treatment etc. which include sharp instruments, chemical wastes, discarded medicines and human excreta etc. is known as medical waste. It is hazardous because it contains a lot of toxic substances. The safe to dispose the medical waste is to take care that this medical waste should not be dump anywhere. It can be reused the things like needles. This can be steriled and reused.
Q6. What farm practices impact soil? Do they impact on soil in a positive or a negative way?
Ans- Farm practices have great impact on soil. In farm they use fertilizers which include chemicals this can damage the soil, this is impact on soil of using the chemicals fertilizers.
They impact on soil in a negative way by the soil damage and the soil gets infertile i.e. the soil can loose it’s fertility by using the chemical fertilizers.
Q8. What are the three main physical properties of soil? How do these effect plants?
Ans- Soil comprises of minerals, organic matter and. The three main physical properties of soil are colour, texture , structure and porosity. These properties regulate the air and water movement in soil and thus affect the ability of soil to function.
Q9. What is pH? What is its range? What are negative impacts of the pH of soil is too low or too high?
Ans- pH is one of the determinants of availability of nutrients in soil. pH range is from acidic to basic. The negative impact of pH is in the soil the uptake of nutrients is governed to a certain extend. The pH value is essential for conservation of soil fertility.
Q10. What is soil fertility? What steps are taken to improve soil fertility?
Ans- Soil fertility depends upon its properties and is defined by its capacity to hold water and nutrients and supply them to plants when they need them. Organic farming can improve the soil fertility. Proper soul fertility is very important for crop production. Organic farmers regulate soil fertility by protecting the soil and feeding it organic material. To improve soil fertility the use of organic fertilizers should be done.
Q11. What is organic matter? Why it is important to plants?
Ans- Organic matter is a organic component of soil which includes the dead and decaying plants, animals and residues of organisms. It is very important to plants because it contains the nutrients necessary for plant growth like nitrogen, phosphorous and potassium. Organic matter in soil improves fertility. This is important for plant growth.
Q13. What is solid waste? Explain best practices for would waste management?
Ans- Solid wastes which are which are accumulated on the soil will become a great problem to humans. Solid waste is the dump thrown in open places which cause harm to humans. Solid waste management activities involve collection, transfer and transport to suitable sites, and safe disposal of wastes by methods which are environmentally compatible. Industrial wastes can be treated physically, chemically and biologically until they are less hazardous. Burying the waste in locations situated away from residential area is the simplest and most widely used technique.
Q14. What is bioremediation? How it helps in controlling soil pollution?
Ans- Bioremediation is a process in which biological remedy is used to abate or clean up the contamination.
This makes it different from remedies where contaminated soil or water is removed for chemical treatment or decontamination, incineration or burialin a landfill. In this way bioremediation helps in controlling soil pollution.
Q15. How would soil texture affect the uptake of nutrients from soil? What would be it’s impact on crop production?
Ans- The texture of soil regulate the air and water movement in the soil and thus affect the ability of soil to function.
This increases in crop production. The nutrients uptake from soil which are responsible for plant growth and increase the crop productivity.
Q16. Why soil conservation is important? What will happen if no preventive measures would be taken?
Ans- Soil conservation is a important resource than other natural resources. The almost omnipresent soil is taken as granted. Soil conservation is a natural resource that needs to be conserved, a part of the natural wealth that needs to be preserved. If no preventive measures are taken then the soil can be damaged and can’t be used for further processes.
Q17. Name five organisms that live in soil. How do they influence the soil?
Ans- The organisms that live in soil are earthworms, insects, bacteria, fungi . The earthworms enhance the availability of macronutrients through aeration of soil.
They also enhance the porosity of soil. The fungus explore the soil and brings back the water and nutrients such as phosphate, zinc and copper that are not easily available in soil.
Q19. How does soil pollution affects the crop yield?
Ans- The soil pollution occurs due to the unnecessary solid waste dumping on the soil. This causes the soil to get damage and soil erosion also occurs. This waste can make the soil infertile and damage, soul pollution is occurred this affects the crop yield. By soil pollution the nutrients in the soil will not be there, if the nutrients are not available them crops can’t grow. This can affect the crop yield.
Q20. “plastic bags a big environmental nuisance” How do you support this statement?
Ans- Plastic was a wonderful material once but now it is a serious world wide environmental and health issue, essentially due to its biodegradable nature. Conventional plastics have been associated with reproductive problems in both wildlife and humans. Plastics are so versatile in the use that their impact on environment are extremely wide ranging. Plastic disturbs soil microbe activity, and if it is ingested it can kill the animals. Thus, plastic bags are a big environmental nuisance.
Q23. Ramu said soil health is important? How can you support him?
Ans- Soil health is really very important for the growth of plants. Soil health should be absolutely perfect with all the nutrients. If soil is not perfect or damaged the plants can’t grow properly and it may lead to crop productivity.
Soil health is a important factor for crop productivity, soil health is not right then crops can’t grow. Hence, soil health is important.