(Paper) IFS - Indian Forest Service Botany Previous Year Paper (I) (2003)

Papers : IFS - Indian Forest Service Botany Previous Year Paper (I) (2003)


1. Answer any four of the following: (Your answers should not exceed 150 words for each sub-section) (10 x 4 = 40)
(a) Write what you know on the following:
(i) Gametangium of Ectocarpus
(ii) An illustrated account of nucule of Nitella.
(iii) Modes of nutrition in fungi
(iv) L,S. Female receptacle of Marchantia

(b) Answer the following:
(i) Flagellate apparatus in Chiamydomonas
(ii) Outline diagrams sowing various parts of pennate diatoms
(iii) Auxospore formation in diatoms
(iv) Strobills of Selaginella

(c) Write notes on:
(i) Blue-green algae as biofertilisers
(ii) Types of bacterial culture media
(iii) Structure of a bacteriophage
(iv) T.M.V. (Tobacco mosaic virus)

(d) Answer the following:
(i) Cell structure of Zygnema
(ii) Importance of diatomaceous earth
(iii) Economic importance of bacteria
(iv) Structure of Polytrichum capsule

(e) Differentiate between:
(i) Oogonium and sporangium
(ii) Isomorphic and heteromorphic life cycles
(iii) Akinete and zygote
(iv) Strobillus of Lycopodium and Selaginella

2. (a) With the help of suitable diagrams describe the life history of Oedogonium. (No description)
(b) Write an account of various types of spores found in algae. Give labelled diagrams. (20 x 2 = 40)

3. (a) Write an illustrated account of sporophytic phase of Anthoceros.
(b) Write a short account of the economic importance of algae. (20 x 2 = 40)

4. Write notes on the following giving suitable diagrams wherever necessary:
(a) Anatomical structure of Rhynia stem
(b) Anatomy of Selaginella root
(c) Stem anatomy of Equisetum
(d) Sporocarp of Marsilea (10 x 4 = 40)

5. Answer any four of the following: (Your answer should not exceed 150 words for each of the sub-section)
(a) Make a comparative study of the following families giving floral formula and floral diagram. Give important differentiating morphological features only.
(i) Musaceae and Liliaceae
(ii) Asclepiadaceae and Verbenaceae
(iii) Euphorbiaceae and Malvaceae
(iv) Solanaceae and Rubiaceae

(b) Draw neat labelled diagrams of the following : (No description)
(i) T.S. coralloid root of Cycas
(ii) L.S. Ginkgo seed
(iii) L.L.. Pinus ovule
(iv) T.S, leaf of Gnetum

(c) Write notes on:
(i) Salient features of floral structure of Magnolia grandiflora
(ii) L.S. of flower of Rosa species and floral diagram.
(iii) L.S. of female flower of Cucurbita maxima and its floral formula
(iv) Economic importance of the family Orchidaceae

(d) Write short notes on the following giving suitable diagrams wherever required:
(i) Chemical preservatives and dyes used in anatomical studies
(ii) Anatomy of phyllode
(iii) Lenticels — structure and function
(iv) Cambium — structure and function

(e) Answer the following:
(i) Principles of numerical taxonomy
(ii) Polyembryony
(iii) Anatomical differences between C3 and C4 plants
(iv) Medicinal importance of Catharanthus roseus (= Vinca rosea)

6. Give suitable answer on the following: (Draw labelled diagrams wherever necessary)
(i) Monosporic embryo sacs
(ii) Wood anatomy of Pinus
(iii) Ruminate endosperm
(iv) Gum arabic and gum ghatti (10 x 4 = 40)

7. Write notes on:
(i) Cultivation practice of turmeric in the hilly tracts of India.
(ii) Seasoning of wood.
(iii) Plants producing essential cosmetic oil
(iv) Three spice yielding plants showing the part/s used as the spice. (Give botanical names of these plants) (10 x 4 = 40)

8. (a) Mention the botanical name, family and the part/s of the plant used as shown below
(i) Indian rubber
(ii) Indigo
(iii) Sandalwood oil
(iv) Vanilla
(v) Guava
(vi) Finger millet
(vii) Cinnamon
(viii) Agar agar
(ix) Betel
(x) Opium

(b) Write an account of the different types of antibiotics, their sources and modes of action. (20 x 2 = 40)