Master of Science II (Agrochemical and Pest Management)
Examination: Oct Nov 2016 Semester III (Old CGPA)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SP
18
Wednesday
16/11/2016
02.30 PM
to
05.00 PM
Pesticide Residues and
Toxicology
C
IX
Instructions: All questions carry equal marks.
All Sections are compulsory.
Attempt any two questions from Section II and III
Figures to the right indicate full marks.
Draw neat labeled diagrams wherever necessary.
Total Marks:70
SECTION I
Q.1 Select most correct alternative from the following (each carry 1 marks) 14
Minamata disease is an example of
Air pollution Noise pollution
Water pollution Soil pollution
Teratogenic substances are responsible for
foetal abnormalities anemia
headache pneumonia
Organo-phosphorus pesticides affect by inhibition of acetyl
cholinesterase enzyme.
digestive circulatory
nervous all of above
Insecticides kills the
insects bacteria
fungi all of above
In pesticides are degraded by microorganisms.
Bio-accumulation Bio-activation
Bio-concentration Bio-degradation
defined as abrupt and permanent change in genome of an
organism.
mutation expression
genetics None of above
Lead and Mercurial pesticides are in atmosphere.
moderately permanently
temporarily None of these
a natural pesticide.
Quinolphos Aldrin
Pyrethrum Malathion
Inhalation of asbestos causes human being.
asbestosis asbestoponia
asbetophobia None of these
10) In gas chromatography column contains gas as
steady mobile
detector None of these
11) HPLC is of chromatography.
high volume high pressure
high profile None of these
12) Toxicology is the branch of
Entomology Biology
Pharmacology None of these
13) The conversion of certain chemically stable compounds to highly chemically
reactive metabolites is termed as
bioactivation biodegradation
bioaccumulation None of these
14) Hepatic necrosis is the disorder related to
salivary gland liver
both a and b None of these
SECTION II
Q.2 What is pesticide residue? Discuss the effects of pesticide residue on soil
micro-organisms.
07
What is bio-magnification? Explain bio-magnification of pesticide with a
model ecosystem studied by you.
07
Q.3 Define pesticide and comment on the mechanism of action of organo-chlorine
pesticides.
07
Discuss about the 'Gas chromatography technique' applied for the analysis of
pesticide residues in fruits.
07
Q.4 What is toxicology? Comment on scope of Toxicology. 07
Explain entry of pesticide in aquatic environment with point and non point
sources.
07
SECTION III
Q.5 Discuss in brief Cytochrome-P-450 enzyme system. 05
Write short note on Minamata disease. 05
Discuss in brief the effect of pesticides on different enzyme systems found in
living organism.
04
Q.6 Write brief account of entry of pesticide in atmosphere. 05
Discuss in brief the applications of HPLC in pesticide residue analysis. 05
Define poison and comment on any one type of poison with respect to
symptoms and treatment.
04
Q.7 Explain the role of Acetylcholine esterase enzyme. 05
Write short note on Bhopal gas tragedy. 05
Explain the effects of pesticides on human health. 04