IFS Botany Papers 2006
IFS Botany 2006
Paper-I
Section A

Answer any four of the following (Answer should not exceed 150 words in each case): × 10 40)

Write short notes on the following:

F-factor

Dolipore

Pseudoelaters of Anthoceros-the structure and function

Peristomial teeth of Funaria

With the help of diagrams differentiate between the following

Carinal canals and vallecular canals

Homoiomerous and heteromerous thalli in lichens

Plectostele and dictyostele

Structure of Oscillatoria and Nostoc.

Answer the following

How are the young sporogonia of Marchantia protected?

Present diagrammatic depictions of different life cycle patterns in Saccharomyces spp. What is the trend exhibited?

What makes the bacterial spores highly resistant?

Critically examine some authors'concept that the rhizophore can be considered as morphologically a root.

Write short notes on:

Plurilocular sporangia of Ectocarpus

Conceptacles of Facus

Spores of Lycopodium in comparison with those of Selaginella

Sporophyte of Riccia at maturity.

Provide brief notes on:

Lysozyrne

Viroids

Oogamy

Synangium of Psilotum

Answer the following questions

With the help of labelled diagrams only depict the major stages and events in the life cycle of Funaria.

Giving suitable examples, highlight the economic importance of marine algae (20 × 2 40).

Answer the following questions

Give an account of the causal organism, symptoms and control of red rot of sugarcane.

Enumerate the benefits of bacteria (20 × 2 40).

Draw neat labelled diagrams of the following: (10 × 4 40)

Stages in sexual reproduction of Penicillium

T S of rhizome of Pteridium.

Life cycle of Puccinia graminis.

Life cycle of Polysiphonia.

Section B

Answer any four of the following (Answers should be within 150 words in each case): (10 × 4 40)

Describe briefly the following:

Egg apparatus in the majority of angiosperms.

Kranz Anatomy and its importance with respect to photosynthesis

Practical value of polyembryony

Role of anther tapetum

Distinguish between the following

Gametophytic and sporophytic apomixis

Somatic hybrids and cybrids

Diacytic type and Anisocytic type of stomata

Nutmeg and mace

Write brief notes on

Embryo development in Paeonia

Energy plantations

Cycadeoidean ‘flower’

Totipotency

Give floral formulae and floral diagrams of the following families

Solanaceae

Apiaceae

Brassicaceae

Liliaceae

Draw neat, labelled diagrams of the following

L S mature seed of cycas.

L S female cone of Pinus.

Pollen grain of Ginkgo at the time of shedding.

L S female strobilus of Ephedra.

Answer the following questions

Briefly being out the moelcular basis of infection and disease resistance.

Explain principles of cell, tissue, organ and protoplast cultures. Examine the significance of each for future of mankind (20 × 2 40).

Answer the following: (10 × 4 40)

What is unusual about the secondary growth in Salvadoran and Bignonia?

What are the applications of paynology?

What is somaclonal variation? What is its major application?

What are the adaptive features of wind-pollinated plants?

Answer the following questions

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

Give the botanical name, family and plant part used in the following

Kapok

Rye

Oil palm

Cashew

Cassava

Turmeric

Saffron

Poppy

Vasaka

Wormwood (20 × 2 40)