2006

BOTANY
Paper 1
Tillie: 3 Hours JrMaximwn Alal'ks 3UO

INSTRUCTIONS
Candidates should attempt all the questions in Parts B C. the.v have to choose only three questions in Part D. The number of marhs carried by earh question is indiLated at the end of the question.
Allsun'rs mllst be written Ifl English.
This paper has fUllr parts:
A 20 marks
Il 100 marks
C 90 marks
D 90 marks

MarJ,'s allotted to each quc8ti()!1 are indicated in each part.

03/1
PART A 4x5=20 Answer each question in ahout 50 words. Each question carries marhs.
1. Explain the stelaI' evolution in pteridophytes.
Describe the importance of organogenesis in biotechnology.
(el List four economic importances each of algae and bryophytes.
(dJ Differentiate between caulogenesis and rhizogenesis.

OJ1

PARTB 10x10=100 Answer each que,c;tioll in ahout JOG ronrd,r.;. Roch questiun carries 10 marks.
2 Brien,Y describe the principle and application of Confocal and Fluorescence microscopy in cell biology.
3.
Enumerate the names of nitrogen fixing microbes found in rhizosphcrc of rice plants along ",ith their taxonomic location. Also explain the regulation of nif genes by nif A and L.

4.
Explain that prion causes fatal diseases.

5.
Define 'Incompatibility' and write on its importance. Explain how the stigma and style control incompatibilit,Y reactions.

6.
Briefly describe the Taxonomy of Leguminaceae.

7.
Write a detailed note on Social Forestry.

8.
Explain the production of an industrially important microbial enzyme.

9.
Explain that Archeae and Eubacteria are two different living domains. ]0. Draw a labelled Fluid mosaic model of a cell membrane. Add a note on membrane transport.


1L Rricfly explain the followmg la) Heterocyst

Nitrogenase
I Bt Cotton



lficrobes in bioleaching of precious metals


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I03/2 I
2006
BOTANY
Paper 2
TIllie: 3 Hours J Maxllnum Marhs 300

INSTRUCTIONS
Candidates should attempt all the questions in Parts B C. However, they have to choose only three questions in Part D. The !lumber of marks earned by each question is indicated at the end of the question.
Answers must be writtPIl in English.
TIlls paper has [our parts:
A 20 marks
B 100 marks
C 90 marks
D 90 marks

allotted to each question are indicated in each part.

03/2 21 PART A 4x5=20
Ansrver each question in ahout 50 words. Each question carries 5 marks.
1. 'What. is stratification in a plant community?
Give a brief account of any five oil yielding plants.
Draw a well locatlOn(S). labdled diagram of ATP synthetase. Mention its
(dJ gxplain why do you expect differences among cells meiosit:> and not among those resulting from mitosis. ansmg fr om



PARTB 10x10=100 Answer questwn in about 100 words. Each question carries 10 marks.
2.
Brip.fly describe the structure of lampbrush chromosomes and discuss tlwlr utility' in cytogenetic studies.

3.
llention the different types of RNA and their important structural characters. Also mention their location in the cell and function.

4.
Compare the ultrastructure details and functions of mitochondria and chloroplasts.

5.
Give the Michaelis-l1enten equation and its significance III the study of enzyme kinetics.

6.
What are polyplojds How will you distinguish between autopolyploids and allopolyploids.

7.
Cite examples and discuss the evidence suggesting the role of chloroplasts and mitochondria in cytoplasmic inheritance.

8.
Explain Photorespiration and give its significance.

9.
Define water potential, osmutlc potential and turgor potential. Explain the relationship between each uf them.

10.
Vhat are macro and micro elements? What you understand by mineral toxicity? Explain the deficiency symptoms of Fe and 110 in plants.

11.
lliagramrnatical1y elucidate C4 pathway of CO2 fixation. Mention its importance and examples of C4 plants.


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