Assignment for Class 10 Science Chapter 16 Sustainable Management Of Natural Resources
Class 10 Science students should refer to the following printable assignment in Pdf for Chapter 16 Sustainable Management Of Natural Resources in standard 10. This test paper with questions and answers for Grade 10 Science will be very useful for exams and help you to score good marks
Chapter 16 Sustainable Management Of Natural Resources Class 10 Science Assignment
Question. Ground water will not be depleted due to
(a) afforestation
(b) untreated sewage and industrial waste discharge
(c) loss of forest and decreased rainfall
(d) cropping of high water demanding crops
Answer : A
Question. Genetic diversity in agricultural crops is threatened by:
(a) introduction of high yielding varieties
(b) intensive use of fertilizers
(c) extensive intercropping
(d) imbalance in biological diversity
Answer : A
Question. Domestic cooking gas cylinder is filled with:
(a) Alcohol
(b) Diesel oil
(c) Liquid petroleum gas
(d) Coal gas
Answer : C
Question. Plants and animals are known as:
(a) biotic resources
(b) abiotic resources
(c) Machines
(d) None of these
Answer : A
Question. Which of the following animal has become almost extinct in India?
(a) Wolf
(b) Rhinoceros
(c) Hippopotamus
(d) Cheetah
Answer : D
Question. Which of the following is not done in a wildlife sanctuary?
(a) Fauna is conserved
(b) Flora is conserved
(c) Soil and flora is utilised
(d) Hunting is prohibited
Answer : C
Question. Which one of the following is a non-replenishable resource?
(a) minerals
(b) forests
(c) mineral fuel
(d) hydroelectricity
Answer : C
Question. Complete the following by choosing the correct option. In 1972, the West Bengal Forest Department recognised its failures in reviving the degraded .......... forests in the South-Western districts of the state.
(a) Teak
(b) Bamboo
(c) Sal
(d) Rosewood
Answer : C
Question. Overuse of resources leads to:
(a) floods and droughts
(b) energy crisis
(c) imbalance in biological diversity
(d) all the above
Answer : D
Question. Which of the following statement(s) is/are correct about the renewable natural resource?
(a) It gets exhausted soon
(b) It requires millions of years to replenish
(c) It reappears at the rate it is used
(d) It cannot be replenished within a short period
Answer : C
Fill In The Blank
DIRECTION : Complete the following statements with an appropriate word/term to be filled in the blank space(s).
Question. Our resources like forests, wildlife, water, coal and petroleum need to be used in a .......... manner.
Answer : sustainable
Question. Dams are large or small structure which stop the natural flow of water for the purpose of .......... generation and .......... .
Answer : electricity, irrigation
Question. A layer of .......... present about 25 km from earth’s surface absorbs a great deal of incoming .......... rays of the sunlight.
Answer : ozone, ultraviolet
Question. All naturally occuring animals, plants and other forms of life in the forest are collectively called .......... .
Answer : wildlife
Question. Plants manufacture their food by using .......... energy.
Answer : solar
Question. Reactor generates .......... energy.
Answer : atomic
Question. ......... is the major source of fresh water and this water is neither used by animals nor exposed to evaporation.
Answer : underground water
Question. .......... also known as the breath of life, is essential for the chemical processes that sustain life.
Answer : oxygen
Question. ......... is a greenhouse gas.
Answer : Carbon dioxide
Question. .......... are termed as biodiversity hotspots.
Answer : forests
Very Short Answers
Answer : In our region, the primary sources of water include groundwater. Groundwater is harvested with the help of bore wells. The harvested water is then stored in water tanks.
Answer : Two traditional systems of water harvesting are:
1. Collection of water in ponds and
2. Construction of small earthen dams.
Question. State an instance where human intervention saved the forests from destruction.
Answer : Human intervention saved the Arabari forest range of West Bengal from destruction with active and willing participation of local community. The Sal forest of Arabari underwent a remarkable recovery.
Question. How do advantages of exploiting natural resources with short-term aims differ from the advantages of managing our resources with a long¬term perspective?
Answer : Exploiting resources with short-term aim is just to reap huge profit, whereas using resources with a long-term perspective is to reap the benefit in a sustainable manner so that these will last for generations to come.
Question. Name any two items which can be easily recycled but generally thrown in the dustbins by us?
Answer : (i) Envelops (ii) Carry bags.
Question. Name any two forest products, each of which is the basis for some industry.
Answer : 1. Pine wood for matchbox industry.
2. Bamboo for paper industry.
Question. Define the term ‘Conservation of environment’.
Answer : Conservation of environment means ‘to keep safe the environment as it is’, i.e. the sensible use of the earth’s natural resources in order to avoid excessive degradation and betterment of the environment.
Short Answers
Question. State any four personal choices you would like to make to reduce energy consumption without affecting the quality of life or work explaining how each one of them would help you to do so.
Answer : 1. By switching off unnecessary lights and fans. This will reduce consumption of coal in production of electricity.
2. By using public transport such as bus, metro, train etc. as much as possible. This will reduce consumption of petrol and diesel.
3. By repairing leaked water taps. We can save water by following this method. This will save energy that is spent during treatment and pumping of water.
4. Reusing used paper, envelopes, etc. This will save the trees from which paper is made; it will also save energy spent on making and recycling papers.
Question. Why are forests considered “biodiversity hot spots”? List two ways in which an individual can effectively contribute to the management of forests and wildlife.
Answer : Biodiversity is measured by the number of different life forms found in an area. In a forest, various species exist which include bacteria, fungi, ferns, plants, nematodes, insects, birds, reptiles and mammals. Forests are therefore considered as biodiversity hot spots.
An individual can contribute in the management of forests and wildlife by:
1. avoiding cutting down of forests and killing of wildlife.
2. educating people about the importance of forests and wildlife in our life.
Question. Name any four categories of people who depend on the forest resources, mentioning major needs of each category.
Answer : 1. Local people who live around forests: They use forests for grazing their cattles, collecting fruits, firewood, bamboo and thatch.
2. Industrialists: They collect raw , materials from forests for their industries.
3. Tourists: They visit forests for recreation.
4. Forest department of Government: They control the resources of forest.
Question. List any four disadvantages of using fossil fuels for the production of energy.
Answer : Disadvantages:
1. Fossil fuels cause pollution.
2. They also cause acid rain.
3. They disturb ecology.
4. They cannot be reused, i.e. they are non-renewable.
Question. Why must we conserve our forests? List any two causes for deforestation to take place.
Answer : We must conserve our forests as they are of great value. The reasons for conserving forests are:
1. Forests help in protection of land and retaining sub-soil water.
2. Forests check floods and maintain ecosystem.
Therefore, forests must be conserved for economic and social growth.
Two causes for deforestation taking place are:
1. For industrial needs.
2. For development projects like building of roads or dams.
Question. What is an equitable distribution of resources in a society and why is it necessary? State any two factors which work against an equitable distribution of resources.
Answer : Equitable distribution of resources means ensuring benefits from the development of resources to all human beings.
There should be equitable distribution of resources because every living being has an equal right on the natural resources of the earth. If anybody is using them excessively, it means somewhere else somebody is being deprived of it Factors which work against equitable distribution of resources are:
1. Advancement and development of society.
2. Energisation and materialization.
Question. List four changes you would incorporate in your life style in a move towards sustainable use of available resources.
Answer : (i) Taking a bus, using cycle or walking.
(ii) Using CFL at home and switching off lights when not required.
(iii) Using the stairs instead of lift.
(iv) Wearing an extra sweater on cold days instead of encouraging the use of heaters.
Question. What are natural resources? State two factors that work against an equitable distribution of these resources.
Answer : The resources obtained from the earth and which are naturally occuring are called natural resources.
Two factors which works against an equitable distribution of these resources are:
(i) Materialisation and (ii) Energisation
Question. What is Chipko Movement? Why should we conserve forests?
Answer : It is the movement initiated by local people in the Reni Village of Garhwal by preventing the cutting down of trees by hugging the trees. It was initiated by Sunder Lal Bahuguna to stop the commercial exploitation of forest.
We should conserve forest because it is of great benefit to us as it holds soil, water, prevents floods, brings rain fall, maintain ecological balance on the earth.
Question. List four advantage of water harvesting.
Answer : Water harvesting is useful because
(i) It provides water for potable use.
(ii) It provides water for irrigation.
(iii) It provides water for recharging underground water reservoir.
(iv) It provides water for vegetation to grow.
Question. What is wild life? How is wild life important for us?
Answer : Wild life means all the animals and plants that grow and live in forest, grow naturally, are not cultivated, domesticated and tamed.
Importance of wildlife:
(i) They help in maintaining ecological balance.
(ii) They provide aesthetic value for human beings.
Question. List any two causes of our failure to sustain availability of underground water.
Answer : Two causes which led to the failure of sustaining the availability of underground water are:
(i) Population: With the increase in population the demand is also increasing which is depleting the underground water.
(ii) Industrialisation: As the industries need more water to manufacture its goods, this led to decrease in the level of underground water.
Long Answers
Books recommended by teachers
CBSE Class 10 Science Chemical Reactions and Equations Assignment Set A |
CBSE Class 10 Science Chemistry Chemical Reactions and Equations Assignment |
CBSE Class 10 Science Chemistry Acids Bases and Salts Assignment |
CBSE Class 10 Science Acids Bases and Salts Assignment Set A |
CBSE Class 10 Science Acids Bases and Salts Assignment Set B |
CBSE Class 10 Science Metals and Non Metals Assignment Set B |
CBSE Class 10 Science Chemistry Metals and Non Metals Assignment |
CBSE Class 10 Science Carbon and its compounds Assignment Set A |
CBSE Class 10 Science Carbon and its compounds Assignment Set B |
CBSE Class 10 Science Biology How do Organisms Reproduce Assignment |
CBSE Class 10 Science How do Organisms Reproduce Assignment Set A |
CBSE Class 10 Physics The Human Eye And Its Colorful World Assignment |
CBSE Class 10 Science Human Eye and Colorful World Assignment Set A |
CBSE Class 10 Science Human Eye and Colorful World Assignment Set B |
CBSE Class 10 Physics Magnetic Effects of Electric Current Assignment |
CBSE Class 10 Science Biology Our Environment Assignment |
CBSE Class 10 Science Our Environment Assignment Set A |
CBSE Class 10 Science Our Environment Assignment Set B |
CBSE Class 10 Science Assignment |
CBSE Class 10 Science Assignments Collection |
CBSE Class 10 Science Energy Crossword Puzzle Assignment |