What is an artificial seed Discuss the importance of somatic embryogenesis.


Define Micropropagation and add a note on its applications. 3×20=60


8. Write short notes on any six of the following

Fusogen


Organogenesis


ICBN


Advantages of Numerical taxonomy


Rhizopus


Ginkgo


Nematode Root Knot of Rice


Economic importance of algae


Dissemination of viruses


Microbes in Medicines. 6×10=60


HRI-28382 4 600

Total No. of Printed Pages 4 Roll No. ............................ 1[CCE.M]1
Botany-I

Time Three Hours Maximum Marks 300

INSTRUCTIONS

Answers must be written in English.


The number of marks carried by each question is indicated at the end of the question.


The answer to each question or part thereof should begin on a fresh page.

Your answers should be precise and coherent.


The part/parts of the same question must be answered together and should not be interposed between answers to other questions.


Candidates should attempt question nos. 1 and 5 which are compulsory and any three out of the remaining questions, selecting at least one question from each section.


If you encounter any typographical error, please read it as it appears in the text book.
(viii) Candidates are in their own interest advised to go through the General Instructions on the back side of the title page of the Answer Script for strict adherence.

HRI-28382 1 Contd.

No continuation sheets shall be provided to any candidate under any circumstances.


Candidates shall put a cross on blank pages of Answer Script.


No blank page be left in between answer to various questions.



SECTION-A

1. Write notes on any six of the following

Apomixis


Pollen tetrad


Crucifer type of embryogenesis


Ascocarps


Aflatoxin


Aleurone Layer


Polyembryony


Oscillatoria. 6×10=60



2. Describe various methods of Transmission of Viral diseases in plants.

How are bacterial diseases in plants controlled Explain in detail.


Describe the role of micro-organisms in controlling pollution. 3×20=60



3. Give a general account of Bryophytes Why are they called plant amphibians

Write about Bacillariophyceae, specifying its economic importance.


What are water ferns Describe any one studied by you. 3×20=60



4. Define Palynology and its application in different branches of Botany.

Write about the secondary growth in Boerhaavia.


Give a general account of Pinaceae and add a note on its economic importance. 3×20=60



SECTION-B

5. Write short notes on any six of the following

Totipotency


Floral Character of sapotaceae


Tissue culture


Laticiferous tissues


Heart wood


Bisporic embryo-sac


Hibiscus Pollen Grains


Difference between Rust and Smut. 6×10=60



6. Give a comparative account of Verbenaceae and Solanaceae.

Describe in detail the pollination mechanism in Asclepiadaceae.


Compare the floral characters of Fabaceae with Asclepiadaceae. 3×20=60



7. Explain anther culture. Add a note on its importance in haploid production.
HRI-28382 2 Contd. HRI-28382 3 Contd.