I 03/1
2005
BOTANY
Paper 1
TUIIC 3 Hours 1 ..Ha:n/lwm Afarks 300
INSTRUCTIONS
Each question is printed both in English and in Kannada.
Answers mllsl be written In the mediUm specified rEnf!Lish or Kannada) in the Admission Tiche! issued to !-chich must be stated clearly' on the cover of the answer buoh w the space proL'lded {or flus purpose, No credit u'ill be given lor the answers Ivritten III a Jnedium other than that specified in the Admisswn T/I'ket. In case of any doubt in the Kannada text, please refer to EnglIsh text.
This paper has (our parts:
A 20 marks
B 100 marks
C 90 marks
D 90 marks

Alarlcs allotted to each question are indicated in each part.
All quest/oru; in Part Part B and Part C are compulsory. An8wer three questions in Part D.
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03! 1 121 PART A 4x5=:20
Answer each qltesfwlI in ahout 50 word8. Each question carncs 5 marks.
1. la) vVhat are RNA and DNA Viruses vhich of the follo'v'ing arc RNA and DNA viruses Tobacco mosaic virus, Retrovirus.
(bJ Give the zoological names for any diseases in plants. IW.hcate the most caused root knot nematodes. three nematodes that cause important feature of the gall,,"
ic) DL3tinguish, with the help of diagrams, tinsel and lL'hiplush types of flagplla. Dnnv a labelled diagram for the transverse section a vhiplash flagellum.
Define 'Sap wood' differences betveen and them. 'Heart wood' and list any four HlaJor



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03/1 (4 I
PART B
Answer each question in about IOO words. Each question ca.rnes 10 marhs.
1.
Write an account of nutrition in Bacteria.

2.
List the major microbial groups associated with rhizosphere that have a symbiotic association with rooLs. ·What benefits do they provide to the host plant?

3.
State and explain Koch's postulates.

4.
Chlorosis is a symptom that can be caused by deficiency' of some mineral elements as well as by some viruses. How ,vill you to identi(y whether the causative agent of chlorosis is a mineral or a virus?


5. List any ten fpatures that arc used in Algae into major classes.
6.
What are major types of fruit bodies in Ascomycetous fungi?

7.
Define 'Incompatibility'. Classif)r incompatibility. Explain hov·/ the st.igma and style control incompatibility reactions.

8.
Explain the importance of Palynology in stratigraphy and oil exploration.

9.
Distinguish 'different.iation', 'de-differentiation' and 're-chflerentiation', giving suitable examples. Explain their importance in cell morphogenf!sis.

10.
State and explain 'luring's Diffusion Reaction of morphogenesis.



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0311 (6I
PART C 6x15=90
Answer each question tn about 1.50 words. Raeh question curnes 15 nwrhs.
1.
What are 'plasmids' Vho1'o are they located? aro they important to the organism which possesses them Vhat is their importance in Biotechnology?

2.
Nrite an account of fungal toxins.


a. Argue for and against the Dryophytic onglIl of Pteridophytes.
4.
Explain the importance of Solanaceae as a source of medicines and vegetables.

5.
Distinguish true and false polyembryony, gWlIlg examples. How will you promote polyembryony experimentally?

6.
What is meant by 'Parasexual hybridization' List the major problems in parasexual hybridization. How will you overcome them?



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0311 I PART D
Answer an:v three of the following questions, each in about 300 Each question carries 30 marks,
1.
Discuss the importance of bacteria in water pollution.

2.
Writp an account of dissemination and control of plant diseases.

3.
Write an essay on the ultra-structure of pollen.

4.
Discuss the floral variation in Orchidaccae.

5.
Explain the terms organogenesis and somatic embryogenesis. Describe the pathways of pollen androgenesis under culture.


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I03/2 I
2005
BOTANY
Paper 2
Tilde: 3 flours J .lVfa.xirruun 300

INSTRUCTIONS
Each questIOn is printed both in English und in Kanl/ada.
Ansllter.'> must be written in the rnedilim specified (English or Kwuwda) in the Adnussion Tichet issued to you, lJ)hich must be stated dearly on the oj'the answer Tn the space prot'ided (or this purpose. No credit loil! be gil'en (or the ansu)crs lL'rittl'n in a medium other than that specified in the Adnllssion Tichct. In rase of any doubt In the Kannada text, please refer to Enf!hsh text.
This paper has four parts:
A 20 marks
B 100 marks
C 90 marks
D 90 marks

Afark.'> allotted to each question arc indicated in each part.
All questiolL'; in Part Part B alld Part C are compulsory. Answer Clny three questions in Part D.
Sf dXCbod &i
(2I
PAnT A 4x5=20
AnSl0er each question 17l about 50 words. Each question carries D marf.cs.
1. Explain the term 'resolving power with reference to the light mlcroscope. Vhy the light microscope cannot magnify an object be,vond a certain t'xtent
11ention the different types of RKA, their location in the cell and their function.
Ie) With one example for each, distinguish a 'trace element' from a 'tracer element'. :rvIcntion the use of the latter in understanding plant metabolic patl1\'ays.
(ell Define and explain the term 'homeostasis' m the context of an
ecosystPlTI.
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03/2 (4 I

PART B
Answer each question rn about 100 words. Each question earnes 10 marks
1.
Discuss the importance of actin filaments, tubulins and c}'clins in cell divisions.

2.
Vhat do you mean b,Y 'heterochromatic' and 'euchromatic' regIOns of a chromosome? In vhat. ways do they differ from one another?

3.
State and explain the 'One gene One enzyme' hypothesis.

4.
Distinguish genetic and cytoplasmic male sterility. Can you induce male sterility and if so,

5.
Vhat is meant by 'photolytic splitting' of water How is it effected What is Its importance in photosynthesis?

6.
Distinguish 'food chain' and 'food Relate these to different trophic levels in an ecosystem.

7.
Define 'Phosphorylation'. Distinguish photophosphorylatIOn and oxidative phosphorylation. Vlhat will happen if phosphorylation not occur during photosynthesis and respiration?

8.
V./rite an account of the dry evergreen forests of India with special referenc(! to their distribution and physiognomy.

9.
In what respects do gums differ from resins? Write briefly on any five sources of commercially obtainable resins.

10.
Write an account of the 'indicator' concept. V.,Trite briefly on air pollution indicators.


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03/2
PART C 6x15=90
Answer each question in about 150 IDords. Each questwn carnes 15 marks.
1.
Distinguish 'polyploidy' and 'polyteny'. How will you identify polyploidal and polytenic nucleii "Under what conditions does a nucleus become polytenic

2.
Huw is sex determined in dioecious plants? Explain the relative roles of sex determination and sex differentiation in sex expression in plants.

3.
'Transpiration is a necessary evil.' -Discuss. In what respects does transpiration differ from evaporation and guttatioo

4.
Justify the statement: 'Fruit ripening is an instance of senescence'.

5.
Explain the terms situ' and situ' conservation. Vlhich one is better to conserve an endangered plant species and why?

6.
Discuss the importance of xylary and extra-xylnry fibres I:lS sources of commercial used in textiles and cordage.


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03/2 18
PART D 3x30=90
Answer' any three or the following questions, each in about 300 uJords. Each question carries .'30 marks.
1.
Discuss the importance of squash, smear and staining techniques in understanding chromosomes.

2.
Trace the history of the modern concept of the gene.

3.
Descnbe the physiological and biochemical mechanisms of biotic and abiotic stress tolerance in plants.

4.
Write in detail on the mangrove forests of India. Discuss their importance in Tsunami control.

5.
Vrite an essay on the commercial hardwood timbers of South India


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