UPSC IAS 2015 Question Paper for Botany Paper-I

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BOTANY (Paper I)

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QUESTION *APER 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 in 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 marks 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.
Diagrams/figures, wherever required, shall be drawn in the space provided for answering the question
itself.
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
Question-cum-Answer Booklet must be clearly struck off.

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T9PS ‘A’ SECTION ‘A’
l. P tn fafed tfSfa TT 150 % 3 fte % 1 ^ :
Briefly describe the following in not more than 150 words each : 10x5=50

• 1.(8) TfaeF ^ u r . ^ eft
Role o f m icrobes in soil nutrient cycling 10

l.(b ) . ^cfljxfcFj. % ^
Algae as bioindicators % 10

1 .(C ) T f r f ^ T tm f b ^ ftt .

Concept o f Progymnosperms 10

l.(d) ■ f ^ t^ ^ T R M t e STffcf s f f a .w f i ^
Chem ical nature o f viroids and their transm ission in plants 10
1.(e) <***\ ^ *FR
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Evolution o f sexual, reproduction in fungi 10

2.(a) 3fk ^3R% w

Describe the range o f vegetative structures with suitable diagrams in volvocales and
their phylogenetic relationships. 20

2.(b) 3TFR ^ ftz) % *fr=r sffc f t # T
cR cffcfa #f^XT |
. Describe the disease sym ptom s, causal organism and the control m easures o f the
loose smut o f wheat. - . »- 15

2.<c) (F fr^ w ) % % ^rm znfe |p n
% 1 ^ -^ T r^ i m ^ rf I ' ,

D raw well labelled diagram o f the L.S. o f Anthoceros sporophyte. D iscuss the
evolutionary significance o f Anthoceros also. 8+ 7= 15

3.(a) % srsft w (zt/q*?.) m \ ■mft ^ rm -fe rf^ X w fcw

Draw well labelled diagram o f the T.S. o f Teleutosorus o f Puccinia and give a b rief
description o f the same. 15

3-(b) ■**1)4*1 % ^ w ) % 3fft f ¥ m ^ rn rt
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Describe the symptoms, causal organism and the control measures o f white rust o f
crucifers. 15

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3 .(c) - 3 ( f a n V w l ) % f t w r 3ft?: 3nfsfo ^
^tf^TTT i •
Discuss the distribution of living Gymnosperm s in India and their economic
im portance. 20

4.(a) ftnfafeci % cbRUIk-Mch ^TFf, ?\m\ 3Tk ^TFTf % ^ ^ :
<TT% cTT^T t e f ’ 3?fc ''
‘3TT^ eft WTTCt’

Give the nam e o f the causal organism, disease symptoms and disease control
measures o f the follow ing :

R ed ro t o f sugarcane and
Late blight o f potato 1 2 ^+ 1 2 ^ = 2 5 ^

4.<b)- w w f l (^& T TT^ -f^TJT TOJcT ^rf^TT I

Give an account o f sexual fruiting bodies in Ascomycetes. 15

4 .(c) t ^ IRich ^F R ^ €rf^TT I

Describe the m ethod o f vegetative reproduction in Bryophytes. 10

‘B ’ SECTION 6B’
5. fTRfafisId *T W & Z w r m 150 t cftftrtr ;

Describe the following in about 150 words -each; 10x5= 50

5.(a)
M ycotoxins ■> 10-

5.(b)
Concept o f totipotency in higher plants 10

5-(c) ^ ^ rr < ? w t

Dye yielding plants ■ . 1 0

5.(d) ^rrfcr-^H^fd 3fk <fMw t r w $ .

Ethnobotanical know ledge and beliefs in species conservation 10

5.(e) W3 o
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Use o f somaclonal variations in crop improvem ent 10

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6.(a) ^sqt % Pinfefed fcft %%q i ttc^ cp %
cffa ^ j y f w FTteftsT % ^ R F r f c ^ *TFT fnfel( 3ffc ?pW ift M * [
% cflf^tl^ ;
sffc .

W rite an account o f the following families w ith respect to floral structures. Give
the botanical nam es o f three im portant plant species belonging to each o f the
fam ilies and specify their' uses :
Ranunculaceae and
Fabaceae ' 10 + 1 0 = 2 0

6 .(b) "’jpf ftchltlct qi'iw'Rjeb ^ I
D iscuss the components o f a full-fledged Botanical garden. 15

6 .(c) 3fk 3fk w w w rf % ^ % )
m m € t 3?k w ftto r f^ u p j
Give an account o f micropropagation and its utility tow ards ex-situ conservation o f
rare and endangered plants. 15

7 .(a) ^TTCcT % ^ w ft |
D escribe the oil yielding plants o f India and their econom ic im portance. 12^

7.(b) . H \^ r arfc I
Distinguish the Androecium o f M alvaceae, Asteraceae and A sclepiadaceae from
each other. 12^

7.(c) 3 ^ % ^TCT f l” cT#
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“Som atic hybrids can be characterized by a variety o f m ethods.” Substantiate the
above statement. 12^

7-(d) 3Tk H \^ 4 \ 3{ftf^OTf ^ cJ^TT I
C om pare the floral characters o f the family Solanaceae and M alvaceae. 12-

8.(a) i %^ xrr^ff % ^ ^ | .
G ive an account o f Vavilov’s “Centres o f Origin” o f the cultivated plants. 17
8.(b) w ffa SFjfeft (f^ d tir^ ) % <£t ftfiT I
D escribe the m ethod o f production o f Androgenic haploids. 17
8.(c) T T ^5m t w ft # ff^ ^ r, w jrfi % w r, i
D escribe the anomalous secondary growth in m onocots w ith suitable diagram.
16

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