UPSC IAS 2015 Question Paper for Zoology Paper-I

f o r t e 7 DETACHABLE
T T T fw fe rF T

0000180 ZOOLOGY (Paper I)
,, , f\ _N
WR : cIn Vuc 37$/<?jcW 3f^T 250
Time Allowed : Three Hours Maximum Marks 250

% f^rq fk fm ; 3 t ^ t
fTCTCT Trepff % 3 tR ^ 3 T ^ 3T^T |
^ 3TO (8) WT f ^ ^ f^Tlf^RT f ^TT 3Tk ST^ft ^Tt ^ ^ ^ f I
^ *TT3 TOt % 3 tR f I
ITTij 5 3 T f^rf f cRTT 3 ^ T^J 3OT f e f f cf^T JPHt %
3rR ^TTT \
TO/^TFT % 3TSR WF* ^ f |
w t 3 # r t -30%^T%r 1^FT 3TT^% *r f e n w i A ^ ? K im
cRT m (^ft.T ?.) g f ^ T % '3^-TJS ^ 3ifer ftfife T^TR ^ -fen ^HT
^Tffq I ■RTtzm % srfclfeH 3{^T fe ft TTTm ^ ^ ^ ^ 3FS " # I
to ! s k *ftn, ^ t ftft% t , m t m ferr i
?ft 3TTTO^ W ^ 3N^ ^ ^ 3TT^ ^%T FTE I
V f % vix1<l ^FFTT 3{»JsbH % 3T JB K P m j W ^T T I <4^ «t>l<il ^Tt 3T?*T % >3xR " ^ t <lyM l

'Jlt<^fl ^ ^3xR 3TCRT: f^ST 0-41 1 "^ x R - ^ fE i^ T ^ ^stltfl *5^1 ^3fT ^ ^T 3RT FTE ^ T %

T O ^ T T ^(T%^ \
QUESTION PAPER SPECIFIC INSTRUCTIONS
Please read each of the following instructions carefully before attempting questions.
There are EIGHT questions divided in Two Sections and printed both in HINDI and m
ENGLISH.
Candidate has to attempt FIVE questions in all.
Question Nos. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted
choosing at least ONE from each section.
The number of marlcs carried by a question/part is indicated against it
. Answers must be written in the medium authorized in the Admission Certificate which must be
stated clearly on the cover of this Question-cum-Answer (QCA) Booklet in the space provided. No
marks will be given for answers written in medium other than the authorized one.
Word limit in questions, wherever specified, should be adhered to.
Illustrate your answers with suitable sketches and diagrams, wherever considered necessary.
Attempts of questions shall be counted in sequential order. Unless struck off, attempt of a question
shall be counted even if attempted partly. Any page or portion of the page left blank in the
answer book must be clearly struck off.

1 c-avz-o-ynma

‘A’ SECTION ‘A’

1. ftwfafisld 3 % '3tR W W 150 ^ 5 :
Answer the following in about 150 words each :. 10x5=50
l.(a) m (w w ) W ^ f ? ^%T ”jfN W t ^ Hwifecl <£)R^ I
What are minor phyla ? Enlist minor phyla with suitable examples. 10
l.(b) #cFTT ^ ^ WRT % f ? FTH \
What is Jatinga bird mystry ? Is it related with bird migration ? Explain. 10
l.(c) ijcfar 3TM A f II .

‘Herdmania is a primitive and degenerate descendent of ancestral chordates’.
Explain. 10
l.(d) TTTRTf^ o e ^ r % ^ w $\ | \ I
4 p ^ is known for social behaviour. Discuss. 10
1.(e) w H t e 3N% 3TR^ft % 3T3ff?RT ftftvT OTT#RTT ^ f | #
^TTWT |
Polychaetes exhibit different modes of life adapted to habitats. Elaborate the
statement. 10

2.(a) WJrfr ^rf%cT 3FFS? ^ #RT ^RcT ^

Give an account of locomotion in Protozoa indicating locomotor organelle with
. suitable examples. ' 15
2*(b) wn #rfxFJT W f ? ^ ^T%
f e t e flwMWl ^ I
What are corals and coral reefs ? Describe different types of coral reefs and their
formation indicating different theories. 15
4

2*{c) % m: ^ | w p fi
. *r % tor! 1
Enumerate functions and main components of endoskeleton of vertebrates. Give an
account of types of jaw suspensoria in vertebrates with suitable diagrams. 20

3. (a) ‘^#PTter’ it i it M w r ^ t 'K

Discuss parasitism in ‘Copepoda’. Comment on structural peculiarities of parasitic
copepods. 15
3. (b) ‘i ^ d f W ^ cTCt tojct i
Give an illustrated account of the reproductive system, life history and development of
Asterias. 15

c-avz-o-ynma 2

3-(c) 3 cWT 35T #RT ^ c f ^ iipW IfS
f e f TWR ^ c ft f ? (d^uf) I
Give an account of locomotion in Pisces indicating the role of muscles and fins. How
do some fish fly ? Comment. 20

4. (a) <T3ftf%cT ^ 3TM ~m\ I'

‘Sphenodon is the most primitive and crocodilians are most advanced of all living
Reptiles’. Discuss the statement. 15
4-(b) ' ^ T ^ f t b %ct 4 f t crm ^Te ^ t ) ^r£rcf
i
Give an account of fresh water, egg laying and pouched mammals with suitable
examples. 15
4.(c) *f vdcii^ofi ( w ^ tr ) f^ r
^TTt | , ■
Give an account of gills and accessory respiratory organs in vertebrates with suitable
examples. 20

‘W SECTION ‘B ’

5. PlRfefed ^ w m 150 t : •
Answer the following in about 150 words each: 10x5=50
5. (a) ‘% r % ^rrTw | ? ^ r r w i
What is ‘Ganga action planr ? Explain. 10
5.(b) % rm t (3^TFf t FTE I
Explain the role of pheromones in alarm spreading. 10
5.(c) 3 T rg ^ t e r ^r i f^ w r
f trf e t i
"Biotechnology is a vital tool in modem forensic science’. Comment. 10
5.(d) x^-TFFff ark 3 j

Differentiate between one-way and two-way analysis of variance (ANOVA).
Comment on its applications in biostatistics. 10
5.(e) V<* ^ I I ^£r
i
Electrophoresis is a valuable tool in resolving cryptic-species complexes. Discuss.
10

3 c-avz-o-ynma

6. (a)
Discuss social hierarchies in Primates. 15

6.(b) f e w % W cTlM | ? % P fe 3 f e w % TffcT^Tt ^TTMT I
What is meant by distribution ? Explain patterns of distribution in natural populations.
15

*.(c) ^-^-T R T F ffei 4 n Pjsfi ^ w
TTF(#r ^rt # rt ^ ft* hi^ I^ h - ^ sF I
What are biogeochemical cycles? Discuss nitrogen cycle indicating the role of
atmospheric N-fixation, the role of bacteria and the impact of human activity. 20

7*(a) w f ? "R w f ^ m ^ l
What is chromosome painting ? Comment on its principles and scope. , 15

7.(b)
fe w fe^cR-uj ^ i
Give an account of causes and consequences of pollution of aquatic resources and the
problem of cultural eutrophication. Suggest measures for abatement of water
degradation. 15

7*(c) ?tct ^ f e w % ^ i
5TR^T ^ 7 - ^ T % % ^ ~§q ^ f e
|
Define biodiversity hot-spot and mention the criteria of its selection. Write about
biodiversity hot-spots of the Indian sub-region giving their saMent features. 20

8. (a) ^ f e r a r w | ? <br>4m 3 f te {
Wliat is Euphenics ? Explain its use for improvement of human welfare. 15

8.(b) STRcT ^ I** -js^ T ^ \ ^ ^ # mlui^Td:
3ft?: ^ # fn ^sT I
Discuss the status and scope of prawn culture in India. Mention commercially viable
and cultivable species of fresh water and brackish water prawns. 15

8. (c) w f ? ^ rr^ r #?n t ? ^
^T T W I ^ ^ fO T W t t

What are transgenic animals ? How are they produced ? Explain their contributions to
human welfare. Comment on ethical concerns in relation to transgenesis. • 20

c-avz-o-ynma 4