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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER IV • EXAMINATION SUMMER 2018
Subject Code:3341302 Date:30-04-2018
Subject Name: Ecology Environmental Pollution
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1
Answer any seven out of ten.
14
1.
Enlist various green house gases.


2.
What is Photosynthesis?


3.
Define term: 'Environmental pollution'


4.
Enlist various types of Environmental Pollution.


5.
What is a food chain?


6.
What is Trohic Leval?


7.
Define term: 'Ecology'


8.
What is a Bio-Geo Chemical cycle?


9.
Define term: 'Environment'


10.
Define term: 'Ecosystem'


Q.2

Write short note on 'Pyramid of Number'
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OR

Write short note on 'Pyramid of Energy'.
03




Explain Hydrological cycle.
03



OR
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Explain carbon cycle.
03




State characteristics of 'Ideal Ecosystem'.
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OR

Explain the factors affecting ecosystem.
04




Explain the measures to control the noise pollution.
04



OR

Write down effects of Air pollution on plants and human health.
04



Q.3

Explain "Eutrophication"
03
3



OR

Describe Natural and man-made sources of Air pollution.
03




Explain effects of Radioactive pollution on environment.
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OR

Write down the various sources of soil pollution.
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Match the pairs
Parameter
Unit of measurement
pH
NTU
Turbidity
Curie and Rutherford
BOD
Unit less
Radioactivity
mg/L
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OR

Write down a short note on Thermal Pollution.
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Discuss the effects of marine pollution.
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OR

Give the classification of Air pollutants.
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Q.4

State whether the following sentences are true or false.
Decomposers depend upon living entity for their food.
Ground water contains higher concentration of dissolved solids.
Peroxyacyl nitrate is a secondary air pollutant.
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OR

Discuss the role of government in prevention and control of environmental pollution.
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Explain Grassland Ecosystem.
04



OR

Explain about food web.
04




Enlist the components of Ecosystem and explain biotic components in detail.
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Q.5

Explain desert ecosystem in brief.
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Write down short note on "Ozone layer Depletion".
04




Explain Green house effect.
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Prepare list of effects of Acid rain on environment.
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