Solapur University Question Paper,2014 Question Paper,ENVIRONMENTAL BIOTECHNOLOGY – I (Pollution and Toxicology),B.Sc. II (Semester – III)


Solapur University Question Paper
B.Sc. II (Semester – III) Biotechnology Examination, 2014
ENVIRONMENTAL BIOTECHNOLOGY – I
(Pollution and Toxicology)
Day and Date : Saturday, 24-5-2014 Max. Marks : 50
Time : 3.00 p.m. to 5.00 p.m.
Instructions : 1) All questions are compulsory.
2) Figures to the right indicate full marks.
3) Draw diagrams wherever necessary.
1. Rewrite the following sentences by choosing correct alternatives given below.
10
i) __________ are biodegradable waste products.
a) rubber, plastic, manure
b) metal, glass, plastic
c) vegetable peels, garden refuse, paper
d) glass, wood cuttings, batteries
ii) The main cause of water pollution is
a) treated sewage, glass battles and plastic bags
b) chemical effluent, leaching of pesticides and algae
c) pesticides, treated sewage and litter
d) oil spills, untreated sewage and chemical effluent
iii) Depletion of ozone layer in outer atmosphere is incidence of
a) skin cancer b) lung cancer c) bronchitis d) asthma
Seat
No.
 SLR-D – 22
SLR-D – 22 -2- 
iv) Green house effect causes
a) cooling of the earth b) warming of the earth
c) trapping of UV rays d) production of cereals
v) Rain is called as acid rain when its pH is below
a) 7 b) 6.5 c) 6 d) 5.6
vi) The term “Bio-magnification” refers to the
a) growth of organism due to food consumption
b) increase in population size
c) blowing up of environmental issues by men
d) increase in concentration of non degradable pollutants as they pass
through food chain
vii) The __________ is the concentration estimated to produce mortality in
50% of a test population over a specific time period.
a) LD 50 b) LC 50 c) EC 50 d) half life
viii) DDT is an example of
a) antibiotic
b) biodegradable pollutant
c) non-biodegradable pollutant
d) All of these
ix) Most harmful environmental pollutants are
a) biodegradable
b) corrosive agents
c) non-biodegradable chemicals
d) all of these
x) The primary organ that is involved in detoxification process is
a) liver b) lung c) mucosa d) skin
 -3- SLR-D – 22
2. Answer any five of the following : 10
i) State the types of toxic substances.
ii) What is lead pollution ?
iii) Enlist the router of toxicants to human body.
iv) What is the effect of global warming ?
v) Explain the thermal effluents.
vi) Define the terms lethal dose and sub-lethal dose.
3. A) Answer any two of the following : 6
i) Write a note on oil pollution.
ii) Give the various principles of toxicology.
iii) What is LD 50 ? How it is determined ?
B) Explain various sources of air pollution. 4
4. Answer any two of the following. 10
i) Explain impacts of radioactive pollution. Add a note on radioactivity of hydro
carbons.
ii) What are agricultural drainages ? Explain with phenomenon of eutrophication.
iii) Explain various routes of transport of toxicants by air and water.
5. Answer any two of the following : 10
i) What is soil pollution ? Explain sources, effects and control measures of
soil pollution.
ii) Discuss the dose-response relationship between chemical and biological
reactions in human body.
iii) Define hydrocarbon. Explain mechanism of transport and diffusion of
hydrocarbons.
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