M.Sc. (Semester IV) (CBCS) Examination Mar/Apr-2018
Zoology
ENVIRONMENTAL BIOLOGY AND TOXICOLOGY
Time: 2½ Hours
Max. Marks: 70
Instructions: Question number 2 and 6 are compulsory. Attempt any two from Question No. 4 and 5.
Q.1
Rewrite the following sentences by choosing the most correct alternative given below:-
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Bhopal disaster which gas was released of
Methyl butane
Methyl propane
Methyl isocyanted
Methylcyante
The photochemical smog dangerous gas was produced.
Ozone
Formaldehyde
Peroxyacetyl nitrate
Nitric oxide
The poisons that are enter an organism from the outside are.
Endogenous poisons
Xenobiotics
Intergenic poisons
Intragenic poisons
Detection of cause of mortality due to any toxicant via medical examination is an aspect of toxicology referred as
Clinical toxicology
Biochemical toxicology
Genetic toxicology
Forensic toxicology
Poisons destroy all tissues with which they come in contact by chemical actions.
Corrosives
Irritants
Neurotics
Cardiac
Organ chlorines insecticides are classified into group.
One
Two
Three
Four
DDT permissible limit in freshwater is
0.004
0.003
0.002
0.001
Q.2
Long answer type question:- Define pesticide and give its classification.
14
Q.3
Answer the following.
Radiation pollution
07
Food additives
07
Q.4
Explain the following.
Toxic agents
05
Mechanism of action of environmental carcinogens
05
Solid waste management
04
Page 2 of 2
SLR-UT-637
Q.5
Explain in short
Define poison and give its classification.
07
Phosphorous cycle
07
Q.6
Write short notes on any four of the following:
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Energy flow
Heavy metals
Importance of toxicology
Bhopal gas effect
Types of ecosystem
Toxicity