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Home » IAS Previous Question Papper » IFS - Indian Forest Service Botany Previous Year Paper (I) (2006)

IFS - Indian Forest Service Botany Previous Year Paper (I) (2006)

IFS - Indian Forest Service Botany Previous Year Paper (I) (2006)

Sub Date: 12/18/2010


1. Answer any four of the following (Answer should not exceed 150 words in each case): (4 * 10 = 40)
(a) Write short notes on the following:
(i) F-factor
(ii) Dolipore
(iii) Pseudoelaters of Anthoceros ó the structure and function
(iv) Peristomial teeth of Funaria

(b) With the help of diagrams differentiate between the following
(i) Carinal canals and vallecular canals
(ii) Homoiomerous and hetÁromerous thalli in lichens
(iii) Plectostele and dictyostele
(iv) Structure of Oscillatoria and Nostoc.

(c) Answer the following
(i) How are the young sporogonia of Marchantia protected ?
(ii) Present diagrammatic depictions of different life cycle patterns in Saccharomyces 2pp. What is the trend exhibited?
(iii) What makes the bacterial spores highly resistant?
(iv) Critically examine some authors' concept that the rhizophore can be considered as morphologically a root.

(d) Write short notes on:
(i) Plurilocular sporangia of Ectocarpus
(ii) Conceptacles of Facus
(iii) Spores of Lycopodium in comparison with those of Selaginella
(iv) Sporophyte of Riccia at maturity.

(e) Provide brief notes on:
(i) Lysozyrne
(ii) Viroids
(iii) Oogamy
(iv) Synangium of Psilotum

2. (a) With the help of labelled diagrams only depict the major stages and events in the life cycle of Funaria.
(b) Giving suitable examples, highlight the economic importance of marine algae. (20 * 2 = 40)

3. (a) Give an account of the causal organism, symptoms and control of red rot of sugarcane.
(b) Enumerate the benefits of bacteria. (20 * 2 = 40)

4. Draw neat labelled diagrams of the following : (10 * 4 = 40)
(i) Stages in sexual reproduction of Penicillium
(ii) T.S. of rhizome of Pteridium.
(iii) Life cycle of Puccinia graminis.
(iv) Life cycle of Polysiphonia.


5. Answer any four of the following (Answers should be within 150 words in each case): (10 * 4 = 40)
(a) Describe briefly the following:
(i) Egg apparatus in the majority of angiosperms.
(ii) Kranz Anatomy and its importance with respect to photosynthesis
(iii) Practical value of polyembryony
(iv) Role of anther tapetum

(b) Distinguish between the following
(i) Gametophytic and sporophytic apomixis
(ii) Somatic hybrids and cybrids
(iii) Diacytic type and Anisocytic type of stomata
(iv) Nutmeg and mace

(c) Write brief notes on
(i) Embryo development in Paeonia
(ii) Energy plantations
(iii) Cycadeoidean 'flower'
(iv) Totipotency

(d) Give floral formulae and floral diagrams of the following families
(i) Solanaceae
(ii) Apiaceae
(iii) Brassicaceae
(iv) Liliaceae

(e) Draw neat, labelled diagrams of the following
(i) L. S. mature seed of cycas.
(ii) L. S. female cone of Pinus.
(iii) Pollen grain of Ginkgo at the time of shedding.
(iv) L. S. female strobilus of Ephedra.

6. (a) Briefly being out the moelcular basis of infection and disease resistance.
(b) Explain principles of cell, tissue, organ and protoplast cultures. Examine the significance of each for future of mankind. (20 * 2 = 40)

7. Answer the following : (10 * 4 = 40)
(i) What is unusual about the secondary growth in Salvadoran and Bignonia?
(ii) What are the applications of paynology?
(iii) What is somaclonal variation? What is its major application?
(iv) What are the adaptive features of wind- pollinated plants?

8. (a) Describe the salient features of Bent ham and Hooker's system of classification, What are its merits and demerits?

(b) Give the botanical name, family and plant part(s) used in the following
(i) Kapok
(ii) Rye
(iii) Oil palm
(iv) Cashew
(v) Cassava
(vi) Turmeric
(vii) Saffron
(viii) Poppy
(ix) Vasaka
(x) Wormwood (20 * 2 = 40)

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