Srijan Publications Pollution-Source and Effect ICSE Biology Solution Class-10 Ch-16

Srijan Publications Pollution-Source and Effect ICSE Biology Solution Class-10 Ch-16. We Provide Solutions of Very Short Answer Type, Short Answer Type, Long Answer Type Questions and MCQs of Exercise-16 Pollution-Source and Effect Srijan Publications ICSE Class-10 Ch-16. Visit official Website CISCE  for detail information about ICSE Board Class-10.

Srijan Publications Pollution-Source and Effect ICSE Biology Solution Class-10 Ch-16

Board ICSE
Publications Srijan Publications
Subject  Biology
Class 10th
Writer Veer Bala Rastogi
Chapter-16 Pollution-Source and Effect
Topics Solutions of  MCQs, Very short and Short Long  Answers Questions
Edition for 2022-2023 Academic Session

A. VERY SHORT ANSWER TYPE QUESTIONS

Ch-16 Pollution-Source and Effect Srijan Publications Solutions for ICSE Class-10 Biology

(Page-252)

Questions 1. Fill in the blanks with suitable words.

(a) Exhaust from ..vehicle.… contribute to over 60 per cent of air pollution

(b) The major soil pollutants are …Household..………. and ….Industrial..…….. wastes.

(c) Arsenic poisoning occurs through ..drinking water…….

(d) Cellulose fibre is a waste from ….Pulp…..  industry

(e) ..methane (CH4)….. is a potent greenhouse gas which is produced in the course of paddy cultivation.

(f) Most biomedical wastes are …..bottle..….

(g) Hydrocarbons at higher concentrations have …Health... effect.

(h) Sound level is expressed in …....dB……… units.

Questions 2. State whether the following statements are true or false If false, rewrite the correct form of statements.

(a) Garbage is an example of biodegradable waste. True

(b) A waste is a worthless material because it has no value to its owner True

(c) DDT is a biodegradable waste. False

Correct-DDT is a non biodegradable waste

(d) A major portion of biomedical waste is noninfectious in nature. False

Correct–A major portion of biomedical waste is Toxic in nature

(e) High carbon dioxide concentrations contribute to global warming. True

(f) Pesticides cannot enter the food chain. False

correct: Pesticides could enter the food chain.

Questions 3. Give one word for the following.

(a) Gases released from refrigerators and air conditioners–Freon gases

(b) Chemicals used to kill insect pests in agricultural practices- Insecticides/Pesticide

(c) Wastes that persist in the soil for a long duration–non biodegradable

(d) Domestic waste and faecal matter is biodegradable

(e) Carbon dioxide, methane, oxides of nitrogen are called–Green House gases

(f) The soil and rock area that remain frozen under ice in the arctic area–Permafrost

Questions 4. Define the following terms:

(a) Biomagnification–Biomagnification is the accumulation of a chemical by an organism from water and food exposure that results in a concentration that is greater than would have resulted from water exposure only and thus greater than expected from equilibrium

(b) Biomedical wastes–Biomedical waste is defined as any waste, which is generated during the diagnosis, treatment or immunisation of human beings or animals, or in research activities pertaining thereto, or in the production or testing of biologicals

(c) Organic farming–Organic farming is an agricultural system that uses fertilizers of organic origin such as compost manure, green manure, and bone meal and places emphasis on techniques such as crop rotation and companion planting.

(d) Greenhouse effect–The greenhouse effect is the way in which heat is trapped close to Earth’s surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them

(e) Social forestry: Social forestry is the management and protection of forests and afforestation of barren and deforested lands with the purpose of helping environmental, social and rural development

(f) Sludge: The residue that accumulates in sewage treatment plants is called sludge (or biosolids). Sewage sludge is the solid, semisolid, or slurry residual material that is produced as a by-product of wastewater treatment processes. This residue is commonly classified as primary and secondary sludge.

B. Short Answer Type Questions

Ch-16 Pollution-Source and Effect Srijan Publications ICSE Class-10 Biology Solutions

(Page-252)

Questions 1. Answer the following questions.

(a) What are the effects of oil spillage on marine life?

Ans: When exposed to oil, adult fish may experience reduced growth, enlarged livers, changes in heart and respiration rates, fin erosion, and reproduction impairment. Fish eggs and larvae can be especially sensitive to lethal and sublethal impacts

(b) Why is radioactive pollution most harmful?

Ans: Nuclear radiations more dangerous than other forms of pollution because: Radioactive pollution affects our environment. The radioactive wastes can not be destroyed and hence they remain in our environment for a longer period of time. Even disposal of radioactive wastes may cause pollution and damage the environment

(c) How does ozone layer protect us from harmful effects in the environment?

Ans: The ozone layer protects us from the harmful effects of the UV radiation from the sun by absorbing it and preventing it from reaching the earth’s surface

(d) What are nonbiodegradable pollutants: 

Ans: Those pollutants which can’t be separated into more straightforward, innocuous substances in nature are called non-biodegradable pollutants. DDT, plastics, polythene, lead vapour, silver foils, etc. are non-biodegradable pollutants.

(e) How is arsenicosis caused: 

Ans: It is highly toxic in its inorganic form. People are exposed to elevated levels of inorganic arsenic through drinking contaminated water, using contaminated water in food preparation and irrigation of food crops, industrial processes, eating contaminated food and smoking tobacco

(f) Which one of the following are nonbiodegradable? Animal bones, silver foil, paper cup, leather belts, plastic glasses.

Ans: silver foil, plastic glasses

Questions 2. Give differences between the following:

(a) Biotic and abiotic air pollutants

Biotic pollutants : Biotic means the any thing that living in the ecosystem or the living things. The living thing that cause the pollution is called the boitic factors. The living things may be plants, animals, human beings, etc.

Abiotic pollutants : Abiotic factors are those which are non living thing in the ecosystem. That means water, air, land, etc

(b) Outdoor and indoor sources of noise pollution

Noise pollution can come from outdoor sources, such as road traffic, jet planes, garbage trucks, construction equipment, manufacturing process- es, lawn mowers, leaf blowers, and indoor sources, including: boom boxes, heating and air conditioning units, and metal chairs scraping on floors.

(c) Domestic and industrial wastes

Industrial waste is defined as waste generated by manufacturing or industrial processes. The types of industrial waste generated include cafeteria garbage, dirt and gravel, masonry and concrete, scrap metals, trash, oil, solvents, chemicals, weed grass and trees, wood and scrap lumber, and similar wastes

Domestic waste is waste that is generated as a result of the ordinary day-to-day use of a domestic premise and is either: taken from the premises by or on behalf of the occupier who generated the waste; without consideration (e.g. payment, reward or other benefit)

(d) Biodegradable and nonbiodegradable wastes

Biodegradable wastes : fruits, vegetables, flowers, plants, animals, water, paper and more are examples of biodegradable waste. They transform into simpler units and then we use them as fertilizers, manure, compost, biogas and more. Therefore, this makes them eco-friendly.

Non-biodegradable wastes are those who cannot be decomposed or dissolved by natural agents. They remain on earth for thousands of years without any degradation. Hence, the threat caused by them is also more critical. A notable example is the plastics which are a commonly used material in almost every field.

C Long Answer Type Questions

Ch-16 Pollution-Source and Effect Srijan Publications ICSE Class-10 Biology Solutions

(Page-252)

Questions 1. How do chlorofluorocarbons affect life on the earth?

Answer : Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth’s protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate

Questions 2. What causes fluorosis? What are its symptoms?

Answer : Fluorosis is a cosmetic condition that affects the teeth. It’s caused by overexposure to fluoride during the first eight years of life. This is the time when most permanent teeth are being formed. After the teeth come in, the teeth of those affected by fluorosis may appear mildly discolored

Questions 3. What are the major factors responsible for the spoilage of the landscape?

Answer : Factors responsible for spoilage of landscape:

  • Deforestation.
  • Urbanization.
  • Industrialization.
  • Growing population.
  • Dumping of wastes on to the land.
  • Excessive use of fertilizers.

Questions 4. Which gases cause acid rain and what are its various effects?

Answer : Acid rain results when sulfur dioxide (SO2) , nitrogen oxides (NO2) and carbon di oxide (CO2) are emitted into the atmosphere and transported by wind and air currents.

Effects of Acid rain

Dead or dying trees are a common sight in areas effected by acid rain. Acid rain leaches aluminum from the soil. That aluminum may be harmful to plants as well as animals. Acid rain also removes minerals and nutrients from the soil that trees need to grow.

Questions 5. Explain the aim and importance of organic farming.

Answer : It helps to maintain environment health by reducing the level of pollution. It reduces human and animal health hazards by reducing the level of residues in the product. It helps in keeping agricultural production at a sustainable level. It reduces the cost of agricultural production and also improves the soil health.

Questions 6. Summaries the objectives of Swachh Bharat Abhiyan.

Answer : The objectives in this phase of the Swachh Bharat Mission were as follows: Improve general quality of life in rural areas by promoting cleanliness & hygiene and eliminating open defecation. Accelerate sanitation coverage in rural areas to achieve full implementation.

— : End of Srijan Publications Pollution ICSE Biology Solution Class-10 Ch-16 :–

Return to :- Srijan Publication ICSE Biology for Class 10 Solutions

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