IFS Botany Papers 2003
IFS Botany 2003
Paper-I
Section A

Answer any four of the following: (Your answers should not exceed 150 words for each sub-section) (10 × 4 40)

Write what you know on the following:

Gametangium of Ectocarpus

An illustrated account of nucule of Nitella.

Modes of nutrition in fungi

S. Female receptacle of Marchantia

Answer the following:

Flagellate apparatus in Chiamydomonas

Outline diagrams sowing various parts of pennate diatoms

Auxospore formation in diatoms

Strobills of Selaginella

Write notes on:

Blue-green algae as biofertilisers

Types of bacterial culture media

Structure of a bacteriophage

T. M. V (Tobacco mosaic virus).

Answer the following:

Cell structure of Zygnema

Importance of diatomaceous earth

Economic importance of bacteria

Structure of Polytrichum capsule

Differentiate between:

Oogonium and sporangium

Isomorphic and heteromorphic life cycles

Akinete and zygote

Strobillus of Lycopodium and Selaginella

Answer the following questions

With the help of suitable diagrams describe the life history of Oedogonium (No description).

Write an account of various types of spores found in algae. Give labelled diagrams (20 × 2 40).

Answer the following questions

Write an illustrated account of sporophytic phase of Anthoceros.

Write a short account of the economic importance of algae (20 × 2 40).

Write notes on the following giving suitable diagrams wherever necessary:

Anatomical structure of Rhynia stem

Anatomy of Selaginella root

Stem anatomy of Equisetum

Sporocarp of Marsilea (10 × 4 40)

Section B

Answer any four of the following: (Your answer should not exceed 150 words for each of the sub-section)

Make a comparative study of the following families giving floral formula and floral diagram. Give important differentiating morphological features only.

Musaceae and Liliaceae

Asclepiadaceae and Verbenaceae

Euphorbiaceae and Malvaceae

Solanaceae and Rubiaceae

Draw neat labelled diagrams of the following: (No description)

T S coralloid root of Cycas

L S Ginkgo seed

L. L. Pinus ovule

T. leaf of Gnetum

Write notes on:

Salient features of floral structure of Magnolia grandiflora

L S of flower of Rosa species and floral diagram.

L S of female flower of Cucurbita maxima and its floral formula

Economic importance of the family Orchidaceae

Write short notes on the following giving suitable diagrams wherever required:

Chemical preservatives and dyes used in anatomical studies

Anatomy of phyllode

Lenticels. Structure and function

Cambium. Structure and function

Answer the following:

Principles of numerical taxonomy

Polyembryony

Anatomical differences between C3 and C4 plants

Medicinal importance of Catharanthus roseus Vinca rosea)

Give suitable answer on the following: (Draw labelled diagrams wherever necessary)

Monosporic embryo sacs

Wood anatomy of Pinus

Ruminate endosperm

Gum arabic and gum ghatti (10 × 4 40)

Write notes on:

Cultivation practice of turmeric in the hilly tracts of India.

Seasoning of wood.

Plants producing essential cosmetic oil

Three spice yielding plants showing the part/s used as the spice (Give botanical names of these plants). (10 × 4 40)

Answer the following questions

Mention the botanical name, family and the part/s of the plant used as shown below

Indian rubber

Indigo

Sandalwood oil

Vanilla

Guava

Finger millet

Cinnamon

Agar agar

Betel

Opium

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