Students can Download Science Chapter 16 Sustainable Management of Natural Resources Questions and Answers, Notes Pdf, KSEEB Solutions for Class 10 Science helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.
Karnataka State Syllabus Class 10 Science Chapter 16 Sustainable Management of Natural Resources
KSEEB Class 10 Science Sustainable Management of Natural Resources Intext Questions and Answers
Question 1.
What changes can you make in your habits to become more environment-friendly?
Answer:
Walk or use a cycle for nearby market place instead of using vehicles. Reuse paper, plastic and glass bottles. Stop eating canned foods, maintain a backyard garden or atleast a potted plant.
Question 2.
What would be the advantages of exploiting resources Avith short-term aims?
Answer:
It provides immediate advantage that fulfills basic current needs.
Question 3.
How would these advantages differ from the advantages of using a long term perspective in managing our resources?
Answer:
The management of natural resources requires a long-term perspective so that these will last for the generations to come and will not merely be exploited to the hilt for short term gains. This management should also ensure equitable distribution of resources so that all, and not just a handful of rich and powerful people benefit from the development of these resources.
Question 4.
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Answer:
There should be equitable distribution of resources. Greediness of human beings. Corruption are the factors which would be working against an equitable distribution of our resources.
KSEEB Class 10 science Sustainable Management of Natural Resources Textbook Exercise Questions and Answers
Question 1.
What changes would you suggest in your home in order to be environment – friendly?
Answer:
- Save electricity by switching off unnecessary lights and fans.
- Save water by repairing leaky taps.
- Do not waste food.
- Carry natural fibre carry – bags when we go shopping and refuse polyethene bags.
- Give importance to natural ventilation.
Question 2.
Can you suggest some changes in your school which make it environment – friendly?
Answer:
- We should plant number of trees around the school.
- There must be good facility of drinking water and latrines.
- Children should not spoil food.
- Sewage water should not be collected around the school.
Question 3.
We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?
Answer:
It is the duty and responsibility of forest department to protect and conserve forests with their wildlife diversity. The department is held responsible for any damage to the forest. So. they should have the authority to decide the management of forest produce. However, local communities and tribes are also closely bonded with forests. Hence the forest produce could be shared with them for their support and service in forest conservation. There should be a limited access to wildlife enthusiasts also.
Question 4.
How can you as an individual contribute or make a difference to the management of
(a) forests and wildlife
(b) water resources and
(c) coal and petroleum?
Answer:
(a) Forests and wildlife spread awareness about the need to conserve forests and wildlife; donate to organizations helping in conservation of forests.
(b) Save-water in our houses: set up rooftop water collecting units.
(c) Coal and petroleum: Save electricity and use less of it: Use public transport services.
Question 5.
What can you as an individual do to reduce your consumption of the various natural resources?
Answer:
One should follow the principles of 3 R’s (Reduce, Recycle and Reuse): Use biogas for cooking and other domestic purposes: We should not waste water and should practice rainwater harvesting; In agriculture, drip irrigation should be practiced: We should shift to use alternative sources of energy such as solar energy.
Question 6.
List five things you have done over the last one week to
(a) conserve our natural resources.
(b) increase the pressure on our natural resources.
Answer:
(a) Conserve our natural resources
- Used recycled paper.
- Planted trees
- Throw biodegradable and non- biodegradable waste into separate bins.
- Switched off unused fans, lamps.
- Used bicycle, instead of bikes while going out.
(b) Increase pressure on our natural resources
- Wasted food at a party
- burnt crackers on Diwali
- Used plastics and polythene bags for carrying fruits.
- Used escalators.
- Kept the TV on even when nobody was watching.
Question 7.
On the basis of the issues raised in this chapter, what changes would you incorporate in your life-style in a move towards sustainable use of our resources?
Answer:
We should grow number of trees around our house.
- We should grow Number of trees around our house.
- Reducing own vehicles by using public transport system or by walking.
- Importance should be given for cleanliness.
- We should avoid usage of Thermal appliances such as heater etc.
Match the following :
| Khadins and Nadis | a) Maharashtra |
| Baudharas and Tals | b) Kerala |
| Pyues and ahars | c) Rajasthan |
| Kattas | d) Bihar |
| e) Karnataka |
Answer:
1. c) Rajasthan
2. a) Maharashtra
3. d) Bihar
4. e) Karnataka
Multiple choice questions:
Question 1.
The eco-friendly practice among the following
a) using plastic plates in weddings
b) bringing things in plastics covers
c) separating daily wastes into recyclable and decomposing materials
d) throwing plastic wastes in our surrounding
Answer:
c) separating daily wastes into recyclable and decomposing materials
Question 2.
Amrita devi Bishnoi sacrificed her life for the protection of
a) Khejri trees
b) Alpine meadows
c) Sal trees
d) Pine trees
Answer:
a) Khejri trees
Question 3.
Stake holders of forest are
a) Nature enthusiasts
b) Local people
c) Industrial and forest department of government
d) all of these
Answer:
d) all of these
Question 4.
Ancient water harvesting systems are
a) dams
b) kulhs, khadins and pynes
c) both
d) ponds
Answer:
b) kulhs, khadins and pynes
Question 5.
Three R.S. to save the environment are
a) risk, reduce, reproduce
b) reduce, recycle, reuse
c) recycle, regenerate, reproduce
d) roll, risk, red
Answer:
b) reduce, recycle, reuse
KSEEB Class 10 Science Sustainable Management of Natural Resources Additional Questions and Answers
Question 1.
The multicrore project – Ganga Action Plan came in
(a) 1995
(b) 1984
(c) 1986
(d) 1985
Answer:
(d) 1985
Question 2.
Water pollution can be easily checked by testing its
(a) salinity
(b) PH level
(c) both (a) and (b)
(d) None of these
Answer:
(b) PH level
Question 3.
What are exhaustible resources? Give two examples.
Answer:
Exhaustible resources are non – renewable resources that cannot be increased by the natural forces of the environment. Ex: Coal, petroleum.
Question 4.
How were coal and petroleum formed?
Answer:
Coal and petroleum were formed from the degradation of biomass (Plant matter and microorganisms respectively) millions of years ago.
Question 5.
Why should we conserve forests and wildlife?
Answer:
We should conserve forests and wildlife because loss of biodiversity leads to a loss of ecological stability. Forest give many useful products like fruits, dyes, resins, perfumes, medicines… etc. Forests and wildlife are an important source of revenue for the government as they attract tourists. More importantly, it is our duty to pass the biological treasure in good order to future generations.
Question 6.
Suggest some approaches towards the conservation of forests.
Answer:
The following approaches can help us conserve forests.
- Enforcement of strict laws against deforestation and poaching.
- Afforestation and Reforestation.
- Checking on forest fires, overgrazing and forest encroachment.
- Creating awareness about forests and wildlife, involving local communities in protecting and managing forests.
Question 7.
Justify with an example that participation by local communities in conservation of forests is very important.
Answer:
In the Arabari forest range of Midnapore district, a far-seeing forest officer. A.K Banerjee involved villagers in the protection of 1,272 hectares of badly degraded sal forest. In return, villagers were given employment in silviculture and harvesting operations, 25% of the final harvest and other benefits with the active and willing participation of local community the degraded Arabari sal forests underwent a remarkable recovery.
Question 8.
Define biodiversity hot spots.
Answer:
Regions with very high levels of species richness and high degree of endemism are called biodiversity hot spots.
Question 9.
Find out about the traditional systems of water harvesting/management in your region.
Answer:
The traditional systems of water harvesting/management in our region are the construction of tanks, wells, kattas and madakas.
Question 10.
Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions.
Answer:
- In plains, the water harvesting structures are crescent-shaped earthen embankments. These are low, straight and concrete.
- In mountainous areas, the system of canal irrigation called kulhs are used for water harvesting. In this method rainwater is collected in streams, which is then diverted into man-made channels down the hill sides.
Question 11.
Find out the source of water in your region/locality. Is water from this source available to all people living in that area?
Answer:
The source of water in our region is rainfall, wells, ponds and groundwater. No, agriculture completely depends on rainwater. If it does not rain properly during monsoons. Agriculture in these areas is seriously affected.
Question 12.
Explain the problems that arise due to the construction of dams.
Answer:
- Social problems – Large number of local inhabitants are displaced without adequate compensation or rehabilitation.
- Economic problems-Huge amounts of public money is used up without the generation of proportionate benefits.
- Environmental problems – Forests are cleared for this purpose and biological diversity is harmed.
Question 13.
Where and when did chipko movement originate?
Answer:
The chipko movement originated in a remote village called reni in garhwal, high up in the himalayas during the early 1970s.
Question 14.
Amrita devi bishnoi sacrificed her life for the protection of
a) Khejri trees
b) Alpine meadows
c) sal trees
d) Pine trees
Answer:
a) Khejri trees
Question 15.
Name the poisonous gases released when coal and petroleum are burnt in insufficient air.
Answer:
Carbon monoxide, oxides of sulphur and nitrogen are poisonous at high concentrations.
Question 16.
Why is it important to use coal and petroleum judiciously?
Answer:
Excess consumption of coal and petroleum increases the amount of carbon dioxide in the atmosphere leading to intense global warming. Thus, we need to use these resources judiciously.
Question 17.
What are the uses of building check dams?
Answer:
Check dams not only hold surface water, but also recharge the groundwater beneath. The groundwater is relatively protected from contamination by humans. The groundwater does not evaporate. Recharges nearby wells and provides moisture for vegetation over a wide area.
Question 18.
Bandharas and tals are the ancient water harvesting methods in
a) Madhya Pradesh
b) Maharashtra
c) Karnataka
d) Kerala
Answer:
b) Maharashtra
Question 19.
The indira Gandhi canal has brought greenery to considerable areas of
a) Rajasthan
b) Punjab
c) Gujarath
d) Madhya Pradesh.
Answer:
a) Rajasthan
Question 20.
The clam built on the river Narmada is
a) Tehri dam
b) Tawa Dam.
c) Sardar Sarovar dam
d) Mettur dam
Answer:
c) Sardar sarovar dam
Question 21.
Primary source of water in india is
a) Groundwater
b) Rivers
c) Lakes
d) Monsoon rains.
Answer:
d) Monsoon rains
Question 22.
Why conserve forest and wildlife.
Answer:
Because restore the Ecological balance.
Question 23.
We need to manage our resources list 2 reasons to justify this statement.
Answer:
- The majority of natural resources is limited.
- Need to conserve resources for future generations.
Question 24.
Change in four habits to become more environment-friendly.
Answer:
- Save water by repairing the leaking taps.
- Switch off unnecessary light and fans.
- Say no plastic paper, disposable plastic cups.
Question 25.
Name two indigenous water saving methods.
Answer:
Digging small pits and lakes.
Question 26.
Name any two forest product each of which is the basis for some industry.
Answer:
- Pine wood-match box industry
- Bamboo-paper industry
Question 27.
Write the uses of coal and its components.
Answer:
- Uses: Thermal power stations and steam enzine.
- Components: Carbon, Hydrogen, Nitrogen, Sulphur.
Question 28.
Write any 3 advantages of watershed management.
Answer:
- Avoid drought and flood.
- Increase the life of the dams and reservoir downstream.
- Maintain ecological balance by scientific conservations of soil water.