1999
BOTANY
Paper 1

Maximum Marks: 300
I/o/lrs I
INSTRUCTIONS
question is printed both in English and in Kannada.
Answers must be written· in the medium specified or Kan.nada) in the Admission Ticket issued to which must be stated clearly on the cover of the UHswer book in the space provided for this purpose. No credit will be given for the answers written in a medium other than that specified in the Admission Ticket.
Candidates should attempt questions 1 and 5 which are compulsory, "und any three of the remaining questions, selecting at one question from each Section.
All questions carry equal marks. Provide diagrams in the answers wherever necessary.
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SECTION A

J. AllSWl'r [lny three questions in not more thn!1 200 words each

UI) Explain the role of plasmids ill genetic engineering.
The hfe histories of members of Rhodophyta are unique among the
-,Justi(y.

Explain '::J.pogalllY' and 'apospory'.
Algae are all excellent tiource cOJnnwl'cially valuable products.
Exphlin.

2. an account of the causal organism, symptoms on the host and control mcasures with respect to any four of the folJmving
Loose smut of wheat
mildew
(eJ MosaiC diseasc
(elJ Ring rot of potato

Leaf blight of wheat
3. \/rite an account of a thalloid and a leafy gametophytc of
Hcpatlcopsida.
Explain the tclome cuncept on tlw sporophytic elaburation
Pteridophyta,
Describe the structure of a bacteriophage.
•
(dl Highlight the primitive characters in Psilalum.
1. (a I Enuinel'atc the advanced characters found in C!lara. Ih) Give an account of post-infectional mechanisms of disease resistance
in plants,
Wrile short llotes on

(iJ Eluters
Cleistol!leclIll1l
Sl'alariform conjugation in SjJirogyra
IIjJjJresori11m

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(Genetic engineering)

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(i1 dtveri (Powdery mildew)
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etJ.r.l"doil eJolo'" il""oJ (Ring rot of potato) o
iLeafblightl
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7icir.>wo eelm
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(post-infectional)

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03/1 (4 I
SECTION n
5. Answer any three of the following in not more than 200 words:

Discuss the salient features of Hentham and Hooker's system classificat.ion of angiosperms.


Enumerate the angiosperm characters obtained in Gnctales.


Explnin the commercial importance of members of Pinaceae.


(dJ Descnbe the floral characteristics of Umbelliferae. Give the noral diagram and the floral formula.
6. Compare the following sets:
RalluHculaceae and Alagnoliaceae
Tcninuccllatc and Crassinuccllat.c ovules
TransvcrHc section of pine needle and leaf of Gnet/l/JI.
(dJ Differentiation and Dedifferentiation

7. Outline the distinguishing features of Grall/incae. Highlighl the eCOIHll1lic importance of LcgltIJlil/(Jsae.
Give an account of the various stomatal types that occur In the angIOsperms.
8. Describe the floral structure of a typical Dipterocarpaceae member. Comment un the eCQnomic importance of this famIly.

Mention the importance of Ilcrbana. How will you process plant
material in the preparation of a herbarium (cl short notes on any four of the following:
Totipotency
(ii Cyb"id
ii) Pullinium

Symbiosis


Chemo-taxonomy


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0Q'diJ (Differentiation) e-OSQ'diJ (Dedifferentiation)

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1999 BOTANY
Paper 2
rAla.HIII/IlII .
INSTIllfC'/'JONS
question L.'i pr;ntl'd both ill and in KUIII/wln
Ans/ocrs must be III the medium sped/Yed (English or [{annuda) in the /dmisslon Tichet isslied to yOll, which must be stated clearly on the cOI'er of the o!lsu'rr rn the space prouidcd (or this pUljJose No credit loill be for the answers written in a mCdill/II other than thai specified in the Admission Tichet.
Calldidates' ·.shou.ld attempt qurstions 1 and 5 which are cOlHjJllhory, three of the remainill{! questio!!s, sclce/wg at lcns! one question /"om each 8ectioll.
/11 CjllcslloliS 1'ljltO! II I /l"ul'ide rI/U![nIIlIS III till'


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I. Answer dl1)" three of 1Ill' l"dlmVll1g I<:ach 'llicstl(lll should not tlWrt' than wonls


cl Vhal are polytellL' alld lrtl1ljJ-hrtlsh chrolllosoml's
lel! List llie mdld yielding t.heir boLanic<l1 names and the families Uwy belong to.
2. C;ive an <-lccuunL or the gene transfer tC'chniquc,c; 111 BlIC'OOI.'g'<:llllSms. Add a note on the current achievements HI the fi.eld.
Ddinc Uw term 'Heo;pirilLory quotient'. How does it in various plant 1.issue;')
ill! Vnle all account. or sex ChrOIll()SOnWS sex-linked inhcrilancl'.

1. Vrite shmt noll'S on three of the f()llowing

Scarification
Iii) Standard deviation
Hoot pressure



IlarLhcl10carpy



bJ Vrile all OlLTounL or the various l:y.lCS or India.


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I
SECTION B
11. illl.' Ill' thL' qllC.C,'!jIJIl III 11111 mOrt' than 200 \lords
the practical applications auxins.
GIve brief nccrlLlnt or cytnplnsmic inhcrltance III pl:1nts vith exalllpics.
lei) the phenomenoll of phoLo-respir:tliml III and lIs
Slglliill':IIIIT.
fi. all (lccount of the mechanism of CO2 fixation dll'ing pIU)(OSYIlLlwsis, explaining the major steps and the end-products.
7. 1(11 (Ill accounL or the various methods .":II11plillg or plant.s lld,Vlllg the commumLy structure.
Iii [wid rain
striltosphcric ozone depleti()l1
H. :111 :lcnlllll! drug rind planls. the IlIil,lllll";t1 :llld tIp' p:lrh 1.11:11 yl'111 (Iw
(hl Vitll .'>llltalJlc CX:llllPlcs, ellll.lllCraLc tlw chief rharacLcl'istlcs and of Llw flJ!!uwing
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