Papers : IFS - Indian Forest Service Botany Previous Year Paper (I) (2000)

PAPER - I : SECTION A

1. Answer any four of the following: (Your answers should not exceed 150 words for each sub-section)
(a) Explain the following:
(i) Mollicute
(ii) Cybrids
(iii) Viroids
(iv) Elicitors

(b) Distinguish the following:
(i) Biodegradation and bioremediation
(ii) Disease and disorder
(iii) Macrandrous and Nanandrous
(iv) Protostele and siphonostele

(c) Explain the following:
(i) Oncogenesis
(ii) Bioleaching
(iii) Crozier
(iv) Polarity

(d) Give a brief account of the following:
(i) Biopesticides
(ii) Suspension cell culture
(iii) Archesporium
(iv) Rhizophore.

(e) Write short notes on the following:
(i) Trabaculae
(ii) Ligule
(iii) Sorus
(iv) Inducium

2. (a) Mention the symptoms, causal organism, mode of infection and control measures of:
(i) Stripe disease of barley, and
(ii) Citrus canker

(b) Discuss the molecular basis of host-parasite interaction.

3. (a) Describe the process of liquid waste treatment by micro-organisms.
(b) Describe the role of Phytotoxin pathogenesis in plant

4. Describe the following
(a) Totipotency of plant cells
(b) Economic importance of marine algae
(c) Structure of antheridiophore in Funaria
(d) Gametophytes in Selaginella

SECTION B
5. Answer any four of the following: (Your answer should not exceed 150 words for each of the sub-section)
(a) Distinguish the following
(i) Perigenous and Mesogenous Stomata
(ii) Phyllospermous and Stachyspennous
(iii) Axile and Parietal placentation
(iv) Synergid and Egg cells

(b) Describe the following
(i) Distribution of cycads in India
(ii) NPC-system
(iii) Pollenia
(iv) Stamens in Magnoliaceae

(c) Describe the following
(i) Ovule of Taxus
(ii) Male organs of Williamsonia
(iii) Female inflorescence in Onetum
(iv) Ovule bearing organs of Cycadofilicales

(d) Describe the following
(i) Beta taxonomy
(ii) Stamens in Leguminosae
(iii) Inflorescence in Euphorbiaceae
(iv) Carpels in Ranunculaceae

(e) Describe the following:
(i) Floral formula of Apiaceae
(ii) Fruit of wheat
(iii) Distribution of Welwitschia
(iv) Cytomixis

6. Answer the following:
(a) Compare the characters of Cycadales and Bennettitales.
(b) Describe different types of Endosperms.
(c) Adventive embryogenesis
(d) Describe the male “flower” of Ephedra.

7. Answer of following:
(a) Compare the floral structure of
(i) Arecaceae and Liliaceae
(ii) Rubiaceae and Verbenaceae.

(b) Describe the floral characteristics of orchids.
(c) Economic importance of Dipteocarpaceae.
(d) Discuss the importance of Herbarium.

8. (a) Mention the botanical name, family and the plant parts used of the following:
(i) Rice
(ii) Lentil
(iii) Walnut
(iv) Heeng
(v) Clove
(vi) Fennal
(vii) Ashwagandh
(viii) Cocaine
(ix) Mamla hemp
(x) Coir

(b) Describe a natural system of classification up to the rank of orders of flowering plants.