Text Book Back Questions and Answers
I. Choose the correct answer
Question 1.
Which of the following would most likely help to slow down the greenhouse effect.
a) Converting tropical forests in to grazing land for cattle.
b) Ensuring that all excess paper packing is buried to ashes.
c) Redesigning landfill dumps to allow methane to be collected.
a) Promoting the use of private rather than puplic transport.
Answer:
c) Redesigning landfill dumps to allow methane to be collected.
Question 2.
With respect to Eichhornia.
Statement A: It drains off oxygen from water and is seen growing in standing water.
Statement B: It is an indigenous spicies of our country.
a) Statement A is correct and Statement B is wrong.
b) Both Statements A and B are correct.
c) Statement A is correct and Statement B is wrong.
d) Both Statements A and Bare wrong.
Answer:
a) Statement A is correct and Statement B is wrong.
Question 3.
Find the wrongly matched pair.
a) Endemism – Species confined to a region and not found anywhere else.
b) Hotspots – Western ghats.
c) Ex-situ Conservation – Zoological parks.
d) Sacred groves – Saintri hills of Rajasthan.
e) Alien sp. Of India – Water hyacinth.
Answer:
e) Alien sp. Of India – Water hyacinth.
Question 4.
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancer?
a) Ammonia
b) Methane
c) Nitrous oxide
d) Ozone
Answer:
d) Ozone.
Question 5.
One green house gas contributes 14% of total global warming and another contributes 6%. These are respectively identified as
a) N2O and CO2
b) CFCS and N2O
c) CH4 and CO2
d)CH4 and CFCS
Answer:
b) CFCS and N2O.
Question 6.
One of the chief reasons among the following for the depletion in the number of species making endangered is.
a) over hunting and poaching
b) green house effect
c) competition and predation
d) habitat destruction
Answer:
d) habitat destruction.
Question 7.
Deforestation means
a) growing plants and trees in an area where there is no forest
b) growing plants and trees in an area where the forest is removed
c) growing plants and trees in a pond
d) removal of plants and trees
Answer:
d) removal of plants and trees.
Question 8.
Deforestation does not lead to
a) Quick nutrient cycling
b) soil erosion
c) alternation of local weather conditions
d) Destruction of natural habitat weather conditions
Answer:
a) Quick nutrient cycling.
Question 9.
The unit for measuring ozone thickness
a) Joule
b) Kilos
c) Dobson
d) Watt
Answer:
c) Dobson
Question 10.
People’s movement for the protection of environment in sirsi of Karnataka is
a) Chipko movement
b) Amirtha Devi Bishwas movement
c) Appiko movement
d) None of the above
Answer:
c) Appiko movement.
Question 11.
The plants which are grown in silivpasture system are
a) Sesbania and Acacia
b) Solenum and Crotalaria
c) Clitoria and Begonia
d) Teak and sandal
Answer:
a) Sesbania and Acacia.
Question 12.
What is the ozone hole?
Answer:
The decline in the thickness of the ozone layer over restricted area is called Ozone hole.
Question 13.
Give four examples of plants cultivated in commercial agroforestry.
Answer:
Commercial Agroforestry includes Casuarina, Eucalyptus, Malai vembu, Teak and Kadambu trees.
Question 14.
Expand CCS.
Answer:
CCS – Carbon capture and storage.
Example:
Question 15.
How do forests help in maintaining the climate?
Answer:
Question 16.
How do sacred groves help in the conservation of biodiversity?
Answer:
These are the patches or grove of cultivated trees which are community protected and are based on strong religious belief systems which usually have a significant religious connotation for protecting the community. Each grove is an abode of a deity mostly village God Or Goddesses like Aiyanar or Amman.
448 grooves were documented throughout Tamil Nadu, of which 6 groves (Banagudi shola, Thirukurungudi and Udaiyankudikadu, Sittannnavasal, Puthupet and Devadanam) were taken up for detailed floristic and faunistic studies. These groves provide a number of ecosystem services to the neighbourhood like protecting watersheds, fodder, medicinal plants, and microclimate control.
Question 17.
Which one gas is most abundant out of the four commonest greenhouse gases? Discuss the effect of this gas on the growth of plants?
Answer:
CO2 Carbon-di-oxide is the most abundant among greenhouse gases.
Question 18.
Suggest a solution to water crisis and explain its advantages.
Answer:
Rainwater harvesting is the accumulation and storage of rain water for reuse in-site rather than allowing it to run off. Rainwater can be collected from rivers, roof tops and the water collected is directed to a deep pit. The water percolates and gets stored in the pit. RWH is a sustainable water management practice implemented not only in urban area but also in agricultural fields, which is an important economical cost effective method for the future. Environmental benefits of Rain Water Harvesting:
1. Promotes adequacy of underground water and water conservation.
2. Mitigates the effect of drought.
3. Reduces soil erosion as surface run-off is reduced.
4. Reduces flood hazards.
5. Improves groundwater quality and water table / decreases salinity.
6. No land is wasted for storage purpose and no population displacement is involved.
7. Storing water underground is an eco-friendly measure and a part of sustainable water storage strategy for local communities.
.
Question 19.
Explain afforestation with case studies.
Answer:
Afforestation:
The Man who Single-Handedly Created a Dense Forest
Tamil Nadu Afforestation project TAP I:
TaP I
objectives:
Tap II
objectives
Question 20.
What are the effects of deforestation and benefits of agroforestry?
Answer:
Effects of deforestation:
1. Burning of forest wood release stored carbon, a negative impact just opposite of carbon sequestration.
2. Trees and plants bind the soil particles. The removal of forest cover increases soil erosion and decreases soil fertility. Deforestation in dry areas leads to the formation of deserts.
3. The amount of runoff water increases soil erosion and also creates flash flooding, thus reducing moisture and humidity.
4. The alteration of local precipitation patterns leading to drought conditions in many regions. It triggers adverse climatic conditions and alters water cycle in ecosystem.
5. It decreases the bio-diversity significantly as their habitats are disturbed and disruption of natural cycles.
6. Loss of livelihood for forest dwellers and rural people.
7. Increased global warming and account for one-third of total CO2 emission.
8. Loss of life support resources, fuel, medicinal herbs and wild edible fruits.
Benefits of agroforestry:
1. It is an answer to the problem of soil and water conservation and also to stabilise the soil (salinity and water table) reduce landslide and water run-off problem.
2. Nutrient cycling between species improves and organic matter is maintained.
3. Trees provide micro climate for crops and maintain CO2 balanced, atmospheric temperature and relative humidity.
4. Suitable for dry land where rainfall is minimum and hence it is a good system for alternate land use pattern.
5. Multipurpose tree varieties like Acacia are used for wood pulp, tanning, paper and firewood – industries.
6. Agro-forestry is recommended for the following purposes. It can be used as Farm Forestry for the extension of forests, mixed forestry, shelter belts and linear strip plantation.
I. Match
Question 1.
Match the column I with column II and select correct option
Option:
a) A – 4,B – 3, C – 1, D – 2
b) A – 3, B – 2, C – 1, D – 4.
c) A – 2, B – 1, C – 3, D – 4.
d) A – 1, B – 3, C – 2, D – 4.
Answer:
a) A – 4,B – 3, C – 1, D – 2
Question 2.
Match the column I with column II and select correct option
Option:
a) A – 1,B – 2, C – 3, D – 4
b) A – 2, B – 1, C – 4, D – 3.
c) A – 2, B – 3, C – 4, D – 1
d) A – 3, B – 2, C – 1, D – 2.
Answer:
b) A – 2, B – 1, C – 4, D – 3
Question 3.
Match the column I with column II and select correct option
Option:
a) A – 3, B – 1, C – 4, D – 2.
b) A – 2, B – 3, C – 4, D – 1.
c) A – 1, B – 2, C – 3, D – 4.
d) A – 3, B – 2, C – 1, D – 4.
Answer:
a) A – 3, B – 1, C – 4, D – 2
II. State True or False and choose the correct option
Question 1.
A – Eichhornia crassiper decreases the oxygen content of water bodies.
B – Prosopis juliflora enrich soil nutrient and important local species growth.
C – Petunia and chrysanthemum are referred as nitrate phytoindicators.
D – Robinia pseudoacocia is a indicator of heavy metal contamination.
Option:
Answer:
b) A – T, B – F, C – T, D – T
Question 2.
A) Jadav “molai payeng” is an forest man of India.
B) The world largest river island, Majuli located on major rivers the Brahmaputra.
C) In 2015 he was honoured with padma shri award in India.
D) He was a student of forest management student.
Option:
Answer:
b) A – T, B – T, C – T, D – F.
III. Choose the incorrect statement
Question 1.
Choose the incorrect statement related to effects of ozone depletion.
a) Juvenile mortality of animal, Increased incidence of mutations.
b) Increases the incidence of cataract, throat and lung irritation, emphysema, skin cancer.
c) Flood/ drought, sea water rise, Imbalance in ecosystem affecting flora and fauna.
d) Diminishing the functioning of immune system is not related to ozone depletion.
Answer:
d) Diminishing the functioning of immune system is not related to ozone depletion.
Question 2.
Choose the incorrect statement related to forestry.
a) The tank foreshore plantations have been a major source of firewood in Tamilnadu.
b) The production of woody plants combined with pasture is referred to silvopasture system.
c) Trees provide micro climate for crops and maintain 02 – CO2 balance.
d) Agro-forestry is an integration of trees, animals, water bodies and humans.
Answer:
d) Agro-forestry is an integration of trees, animals, water bodies and humans
IV. Choose the correct statement
Question 1.
Choose the correct statement from the following.
a) Agricultural drones are animals used to do heavy agricultural works.
b) CARTOSAT-2 is used to watch border surveillance.
c) The production of flowering plants combined with pasture is reffered to silvopasture system.
d) GTS is a satellite navigation system used to determine the ground position of an object
Answer:
b) and d)
V. Pick out the odd one out and give Reason
Question 1.
In-situ, Ex-situ, National parks, Biosphere Reserves, Remote seming.
a) Remote seming, while other are related to biodiversity conservation.
b) National parks, while others are man made project.
c) Biosphere reserves, detecting and monitoring the physical characteristic of an area.
d) None of the above.
Answer:
a) Remote seming, while other are related to biodiversity conservation.
Question 2.
Reduces flood hazards, decreases salinity Reduces soil erosion, carbon sink.
a) Reduces soil erision. while others are related to Rainwater harvesting system.
b) Carbon sink, while others are related to benefits of Rain water harvesting.
c) Decreases salinity, while others are related to rain water harvesting.
d) Reduces soil erosion, while others are eco friendly method.
Answer:
b) Carbon sink, while others are related to benefits of Rain water harvesting
Question 3.
Lichens, Ficus, Pinus, Rose, Gladiolus.
a) Lichens, while others are SO2 pollution.
b) Gladiolus is the heavy metal indicator, while others are related to SO2 pollution.
c) Gladiolus. while others are indicator for SO2 pollution.
d) Pinus is the nitrate indicator, while others are SO2pollution.
Answer:
c) Gladiolus. while others are indicator for SO2 pollution
VI. Pictorial questions
Question 1.
Relative contribution of green house gas are shown below. Which one of the given option is correct?
a) A – others, B – CH4, C – CFC, D – O2
b) A – CH4, B – CO2, C – O2,D – CFC
c) A – CO2, B – CH4, C – CFC, D – O2
d) A – others, B – CH4, C – CFC, D – CO2
Answer:
d) A – others, B – CH4, C – CFC, D – CO2
Question 2.
Examine the diagram Which is showing the percentage. Find out the Green house gas related to its percentage.
Answer:
a) CO2 CH4 CFC others
VII. Assertion and Reason
Question 1.
Assertion: Sacred groves and sacred lakes are community protected Bio-diversity conservation.
Reason: Which are based on strong religious belief system,
a) A is correct R is wrong.
b) A is correct but R does not explains A.
c) A is correct and R is the correct explanation for A
d) A and R are wrong.
Answer:
c) A is correct and R is the correct explanation for A.
Question 2.
Assertion : Appiko movement started in Gubbi Gadde village sirsi in karnataka by panduranga Hegde.
Reason: It is started to protest against felling of trees, monoculture, forest policy and deforestation
a) Both are wrong.
b) A and R is correct
c) A is correct R- does not explains A.
d) A is wrong R is correct.
Answer:
b) A and R is correct
VIII. Spot the error
Question 1.
Biosphere Reserves, National parks and wildlife sanctuaries are community protected Bio-diversity conservation.
Answer:
Biosphere Reserves,National parks and wild life sanctuaries are Goverment protected Bio-diversity conservation.
IX. Choose the incorrect pair
Question 1.
Choose the incorrect pair.
A) Protein Bank-Fodder production.
B) Livefence, foddertree – Erythrina spp.
C) Agro forestry – Extension of forest, mixed forestry.
D) Social forestry-Jadav,Molaipayeng.
Answer:
D) Social forestry-Jadav,Molai payerg
X. Read the following statement with two blanks A and B select the correct option for blank A and B.
Question 1.
Eichhornia crassipes is an invasive weed native to south America. It affects the growth of A and finally leads to B.
Answer:
a) Phytoplankton – 1) eutrophication
XI. Fill in the blanks Answers
1. ………………. is another long term method to store carbon.
Answer:
Biochar
2. …………………. is the total amount of green house gases produced by human activated.
Answer:
Carbon foot print
3. Eating indigenous fruits and products are reduce ………………
Answer:
Carbon foot print
4. The forest, soil, ocean are …………………. and landfills are ………….. sinks.
Answer:
Natural, artificia
Dobson unit
5. The thickness of the ozone column of air is measured in terms of ………………
Answer:
Chloro fluro carban
6. …………………. is the anthropogenic greenhouse gas.
Answer:
Tank Foreshore
7. _____ plantations have been a major source of fire wood in Tamilnadu.
Answer:
Plantations
8. World ozone Day is celebrated on ……………….
September 16
XII Choose the correct option
Question 1.
Which creates a breeding habitat for disease causing mosquito Anopheles?
a) Eichhornia crassipes
b) Lantana camara
c) Prosopis juliflora
d) Parthenium hysterophorus
Answer:
a) Eichhornia crassipes
Question 2.
Which one the activities is replacement of conventional electrification project solar panels or other energy efficient boilers?
a) Clean Development Mechanism (CDM)
b) Chloro Fluoro Carbon (CFC)
c) Certified Emission Reduction (CER)
d) TamilNadu Afforestation Project (TAP)
Answer:
a) Clean Development Mechanism (CDM)
Question 3.
Some of the major species cultivated in Agroforestry for commercial use:
a) Erythrina, Albizzia
b) Malaivembu, Kadambu
c) Acacia, Azadirachta Indica
d) Sesbania, Acacia
Answer:
b) Malaivembu, Kadambu
Question 4.
Which one of the following is not a carbon sequestration method?
a) Forest conservation and soil conservation
b) Carbon foot print
c) Biochar
d) Increasing the number of animals.
Answer:
d) Increasing the number of animals.
Question 5.
Chlorella, sceuedesmus, chroococcus and chlamydomonas are used globally for
a) conservation movement
b) micro climate.
c) carbon sequestration
d) Biochar preparation.
Answer:
c) Carbon sequestration
Question 6.
Botanical garden, zoological park, in-vitro conservation, cryo preservation, seedling, tissue culture and DNA banks are ………………..
a) Sacred groves
b) In-situ conservation.
c) Ex-situ conservation
d) Appiko movement
Ans:
c) Ex-situ conservation
Question 7.
…………….. grooves were documented through out Tamil Nadu
a) 446
b) 447
c) 448
d) 449
Answer:
c) 448
Question 8.
Species which is present in some part of continent or present in single island is.
a) Endemic
b) Epidemic
c) Pandamic
d) Sporadic
Answer:
a) Endemic
Question 9.
Approximately one third of India flora have been identified in Indian Himalayas, Peniris India, and Andaman nicobar island it is ……………… species.
a) pandamic
b) epidemic
c) endemic
d) sporadic
Answer:
c) endemic.
Question 10.
Bentinckia condappana tree, which is endemic to………………… of Tamil Nadu and kerala
a) Western ghats
b) Peninsular
c) Coastal
d) Slope
Answer:
a) Western ghats.
Question 11.
Lianas, Nepenthes khasiyana is endemic to …………….. of meghalaya
a) Western ghat
b) Peninsular
c) Meghalaya
d) Khasi hills
Answer:
d) Khasi hills
Question 12.
Macroalgae and Maine grasses and Mangloves have ability to mitigate ………………..
a) N2O
b) CFC
c) CO2
d) CH4
Answer:
c) CO2
Question 13.
Trees like Eugenia Caryo phyllata, Tecomastans cinnamomum verum have high capacity to sequester …………….
a) N2O
b) Carbon
c) Methane
d) CFC
Answer:
b) Carbon
Question 14.
Which one of the following is an alien invasive species?
a) Mangifera indica
b)Eichhornia crassipes
c) Solanum nigrum
d) Zizipus jujupa
Answer:
b) Eichhornia crassipes
Question 15.
Environmental management tool is an …………………
a) Biodiversity Impact assessment
b) Environmental Impact assessment
c) Bio monitoring
d) G I S
Answer:
b) Environmental Impact assessment
Question 16.
……………. system is used in mining, Aviation, surveying agricultural and marie ecosystem.
a) GIS
b) GPS
c) BIA
d) EIA
Answer:
b) GPS
Question 17.
InSAT3DR Satellites used in …………………….
a) Earth observation
b) Communication
c) Disaster management
d) Weather forecasting
Answer:
c) Disaster management
Question 18.
Now a days, scientists suggest carbon sequestration is a solution for global warming. The reason is
a) The balance between photosynthesis and respiration is disturbed
b) The absorption process of plants from the soil is disturbed
c) Due to high intensity of light respiration process is disturbed
d) Carbon sequestration is not the solution for global warming.
Answer:
d) Carbon sequestration is not the solution for global warming.
Question 19.
Reforestation refers to
a) Chipko movement
b) Development of forest in an area which was already subjects to deforestation
c) Development of forest through cultivabel land
d) None of there
Answer:
b) Development of forest in an area which was already subjects to deforestation.
Question 20.
World’s must problematic aquatic weed is
a) Clitoria
b) Parthenium
c) Eichhornia crassipes
d) sesbania
Answer:
c) Eichhornia crassipes.
Question 21.
Which of the following gas related to release cars with catalytic converter and buring of organic matter.
a) CO2
b) Methane
c) N2O
d) CFC
Answer:
c) N2O
Question 22.
The Ozone layer of troposphere is called
a) Middle Ozone
b) Ozone Shield
c) Bad Ozone
d) Good Ozone
Answer:
c) Bad Ozone
Question 23.
Which one of the following is a livefence of fodder?
a) Gliricidia sepium
b) Nerium
c) Aloevera
d) Chrysanthemum
Answer:
a) Gliricidia sepium
Question 24.
Coral bleeching observed in Gulf of mannar, Tamil Nadu due to ………………..
a) Decreases of fresh water
b) Low rainfall
c) Green house
d) Dust particles
Answer:
c) green house
Question 25.
Read the following statement and fill it with correct answer in the blank A and B the ozone layer of the troposphere is called A and the ozone layer of startosphere is known as B ……………..
a) important, useful
b) bad and lower
C) bad zone, good zone
d) good zone,bad zone
Answer:
c) bad zone, good zone
Question 26.
The purple and blue colours of ozone picture indicate ……………. ozone.
a) Least
b) High
c) Medium
d) Large
Answer:
a) Least
Question 27.
The yellow and red colours of ozone picture indicate ……………….. ozone.
a) more
b) medium
c) low
d) least
Answer:
a) more
Question 28.
The objective of clean development mechanism are/is
a) Prevention of dangerous climate change
b) Reduction of emission of green house gases
c) Both (a) and (b)
d) Reduction of electricity generation and its need.
Answer:
c) Both (a) and (b)
Question 29.
Remote sensing is .
a) Mapping ocean bottom and its resources
b) Mapping forest fire
c) Mapping species distribution
d) all the above
Answer:
d) all the above
Question 30.
Bentinckia and Baccaurea are …………….. plants.
a) Invasive species
b) Endemic
c) Silvopasture
d) None of these
Answer:
b) Endemic
Question 31.
Eichornia. prosopis are plants ………………….
a) endemic
b) Invasive
c) Silvopasture
d) None of these
Answer:
b) Invasive
Question 32.
The management of forest and afforestation on barren lands is …………………..
a) agroforestry
b) Silvopasture
c) Social forestry
d) Afforestation
Answer:
c) Social forestry
Question 33.
Which is fast growing and more adopted species?
a) Invasive species
b) epidemic species
c) Pandamic species
d) Wild species
Answer:
a) Invasive species
Question 34.
The plant species (or) community acts as a measure of enviornmental conditions is referred as …………….
a) Both b and d
b) Plant indicators
c) Protocol
d) Biological indicators
Answer:
b) Plant indicators
Question 35.
The international treaty called …………….. (1987) was held in Canada on substances that deplete ozone layer.
a) Montreal Protocol
b) Kyoto protocol
c) CDM
d) CER
Answer:
a) Montreal Protocol
XIII. Two Marks
Question 1.
Why the green house gases cause global warming
Answer:
Question 2.
Draw the pie diagram which shows Relaitive contribution of green house gases.
Answer:
Question 3.
Why dust and humid night than dust free nights? (or) Does clouds and dust particles cause global warming?
Answer:
Global warming
Question 4.
Differentiate bad ozone from good ozone.
Answer:
Question 5.
Which is indicating the least ozone part and more ozone part of the atmosphere?
Answer:
Question 6.
What would be the result of ozone depletion on living organisms?
Answer:
Question 7.
Is there any hole in the ozone?
Answer:
Question 8.
What are the main objectives of Montreal protocol?
Answer:
The main goal of it is gradually eliminating the production and consumption of ozone depleting substances and to limit their damage on the earth’s ozone layer.
Question 9.
What is Agroforestry?
Answer:
Question 10.
What is silvopasture? (or) What is of degraded forests recreation forestry?
Answer:
Question 11.
Differentiate Agroforestry and Social forestry.
Answer:
Question 12.
What could be the causes for deforestation?
Answer:
Question 13.
Who is called as Forest Man of India? Why?
Answer:
Question 14.
What is invasive species?
Answer:
A non – native species to the ecosystem (or) country that spreads naturally, interferes with native species, poses a serious threat to the ecosystem and cause economic loss.
Question 15.
Conservation movement – What does it signifies.
Answer:
A community level participation can help in preservation and conservation of our environment.
Question 16.
What is Five F’s? Which is related to what?
Answer:
Question 17.
Each grove is an abode of a diety mostule Village God (or) Goddesses, like Aiyanar (or) Amman – What does it states?
Answer:
Question 18.
What is Biochar?
Answer:
Question 19.
What is carbon foot print?
Answer:
C.F.P is the total amount of green house gases produced by human activities such as agriculture,Industries, deforestation, waste disposal burning fossil fuel directly (or) indrectly.
Question 20.
What are the benefits related to environmental impact assessment?
Answer:
Question 21.
What is Biomonitoring?
Answer:
The act of observing and assessing the current state ongoing
a) changes in ecosystem
b) bio diversity components
c) landscape including natural habitat
d) population and species.
Question 22.
What is Agricultural drone?
Answer:
Question 23.
What are the uses of agricultural drone (or) Bio monitoring?
Answer:
Question 24.
What Geographic Information system?
Answer:
Question 25.
What are the scope of GPS satellite? (or) (Global Positioning System)
Answer:
Question 26.
Which is providing exact picture and data on identification of even a single tree to large area and wild lifor for classification?
Answer:
Remote sensing is the process of datelining and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the target area.
Question 27.
What are green house gases?
Answer:
Question 28.
If you buy imported fruit like Kilvi indirectly it increases (GFP) carbon foot print. How?
Answer:
The fruit has travelled a long distance in shipping (or) airlines thus emitting tons of cO2.
Question 29.
Which is names of Alien invasive species?
Answer:
Question 30.
Define carbon sink. Give an example
Answer:
Any system having the capacity to accumulate more atmospheric carbon during a given time interval than releasing CO2
Example :- forest, soil, clean are natural sinks, Landfills are artificial sinks.
XIV. Three Marks
Question 1.
What are the effects of Green House Gases? Give example.
Answer:
Question 2.
Why we want to control global warming? Write the (or) effects of global warming.
Answer:
Question 3.
What are the reasons for global warming?
Answer:
Question 4.
Global warming is a threatening problem nowadays. What are the stratifies to deal with it?
Answer:
Question 5.
Why ozone layer is known as ozone shield?
Answer:
Ozone layer is a region of earth’s stratosphere that absorbs most of the sun’s ultra violet radiation. So it is called as ozone shield.
Question 6.
What is Dobson unit?
Answer:
Question 7.
Can we see ozone layer?
Answer:
Question 8.
Why was Montreal protocol signed?
Answer:
Question 9.
What is Montreal protocol? What is its aim?
Answer:
Question 10.
What is clean development mechanism (or) Kyoto protocol?
Answer:
Question 11.
Differentiate protein Bank from live fence of fodder trees and hedges.
Answer:
Question 12.
What is social forestry?
Answer:
Question 13.
Why forestry extension centres are important? (or) What ae the major activities of forestry extension centre?
Answer:
Question 14.
Forest, soil, ocean are called natural sink why? (or) What is carbon sink?
Answer:
Any system having the capacity to accumulate more atmospheric carbon during a given time interval than releasing CO2.
eg: Landfills are artificial sinks forest, soil, ocean are natural sinks.
Question 15.
Why Eichhorinia crassipes is called Terror of Bengal?
Answer:
Question 16.
Differentiate Chipko movement and Appiko movement.
Answer:
Question 17.
Differentiate in – Situ conservation and ex-site conservation.
Answer:
Question 18.
What is Geological sequent ration?
Answer:
Various safe sites have been selected for permanent storage, liquid storage in the ocean and solid storage by reduction of CO2 called Geological sequestration.
Question 19.
Write the benefits of environmental impact assessment.
Answer:
Question 20.
What is environmental impact assessment?
Answer:
Question 21.
What is Bio – diversity impact Assessment?
Answer:
It can be defined as a decision supporting tool to help biodiversity development planning and implementation.
Question 22.
How Bio – diversity impacts can be assessed?
Answer:
Question 23.
Write a short note on production of methane?
Answer:
Methane is 20 times as effective as CO 2 at trapping heat in the atmosphere.
It sources are attributed paddy cultivation, cattle rearing, bacteria in water bodies, fossil fuel production. Ocean, non – wetland soils and forest/wild fires.
Question 24.
Write a note on (N2O) Nitrous Oxide?
Answer:
Question 25.
Write the significances of lakes.
Answer:
XV. Five Marks
Question 1.
Define Global warming. Write the reasons for it what are green hours Gases? What are the human activities lead to produce green house effect?
Answer:
Global Warming
Reasons for global warming
green house gases
Human activities lead to produce the green house effect.
– Human activities lead to produce the green house effect by
Question 2.
Write about Natural and anthropogenic sources of Green House Gases Emission.
Answer:
CO2 (Carbon dioxide)
Methane
N2O (Nitrous oxide)
Question 3.
What are the effects of Global warming on plants? (or) What are the changes may occur on plants and climate due to global warming?
Answer:
Global Warming Effects on Plants
Question 4.
The presence (or) absence of certain plants indicates the state of environment by its response. What does it called ? Give some examples.
Answer:
Plant indicators
Examples
Question 5.
If the ozone layer is affected, U-V radiations on the sun will reach the earth surface and sure many damage.
Can you list out some effects of ozone depletion?
Answer:
Effects of Ozone depletion.
The main ozone depletion are:
Question 6.
Write an essay on ozone.
Answer:
Ozone shield
Ozone HOLE
Montreal protocol
Kyoto protocol
Question 7.
Write the objectives and achievements of Afforestation.
Answer:
Afforestation Objectives
Achievements
Question 8.
What is Bio-Diversity conservation movement.
Answer:
Conservation movement
Chipko Movement
Features of chipko Movement
Appiko Movement
Question 9.
Write about endemic centre’s and endemic plants.
Answer:
Question 10.
Write about two approach to mitigate global warming.
Answer:
Carbon Capture and Storage (CCS)
Carbon Sequestration
Question 11.
What is Carbon foot print ? How will you reduce this CFP?
Answer:
Carbon Foot Print (CPF)
To Reduce carbon foot print
Question 12.
Write an essay on Environmental impact Assesment and its benefits.
Answer:
Environmental Impact Assessment (EIA)
The benefits of EIA to society
Question 13.
Write about Bio-diversity impact Assesment and How will you anses its impact.
Answer:
Biodiversity Impact Assessment (BI A)
Bio-diversity Impacts can be assessed by
Question 14.
What is Geographic Information system? What are its importance?
Answer:
Geographic Information System
Importance of GIS
Question 15.
What is Remote sensing and what are its uses?
Answer:
Remote Sensing
Applications of Satellites