Veer Narmad South Gujarat University 2010 M.Sc BioTechnology IBT- 405 : Invironmental Biology In (sem.-4). - Question Paper

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M. Sc. (Int. Biotechnology) (Sem. IV) Examination May/June - 2010 IBT 405 : Environmental Biology

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[Total Marks : 70

Instructions

(1)

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Fillup strictly the details of signs on your answer book.

Name of the Examination :

M. Sc. (Int. Biotechnology) (Sem. 4)

Name of the Subject:

IBT 405 : Environmental Biology

-Subject Code No.

3 00 0 9

-Section No. (1,2,.....): 1&2

(2)    Figures to the right indicate full marks of the question.

(3)    Draw neat and labelled diagrams whenever necessary.

(4)    Both sections must be written in separate answer books.

SECTION-I

1 What are the main causes for the increase of C0₂

in the atmosphere? What are the consequences of this increase?

OR

1    What is an estuary? Classify different types of estuaries and explain the ecological importance of estuaries.

2    What is ecological succession? Describe the process of succession in a pond with neat labelled diagram.

OR

2 Describe the ecosystem in terms of various structural components present in it and the functional aspects.

Write short notes on : (any three)

(a)    Nitrogen cycle

(b)    Biology of thermal springs

(c)    Energy flow model in ecosystem

(d)    Zonation in ocean

(e)    Types of forest ecosystems.

SECTION-II

4 Define pollution. Explain the main sources of air    10

pollution and suggest the measures to be taken to reduce air pollution.

OR

4    What is in situ and ex situ conservation? What is the 10 role of National Parks, Wild life sanctuaries and Botanical gardens in biodiversity conservation? Enlist some important National parks, Wild life sanctuaries and botanical gardens

of Gujarat.

5    What is acid rain? Explain the main causes and the    10 environmental problems caused by acid rain.

OR

5    Explain various kinds of water pollution. Discuss the    10 ecological effect of water pollution on aquatic life and human health.

6    Write short notes on : (any three)    15

(a)    Radioactive pollution

(b)    Noise pollution

(c)    Endemic species

(d)    Sustainable development

(e)    Genetic, species and ecosystem diversity.

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Attachment: veer-narmad-south-gujarat-university-2010-m-sc-biotechnology-28623-1.pdf

Earning:   Approval pending.