SECTION A
Ql. Answer the following keeping your answers brief and to the point 5x8=40

What are the pigments that are found in red algae 5
What are the different types of flagella found in fungi? 5
How significant is the parasexuality in Aspergillus 5
Comment on the structure, location and function of transfusion tissue. 5
Comment on the contractile vacuoles in Euglena. 5
What is the heterotrichous habit of moss protonema growth:
(g)What are the xerophytic and hydrophytic characters found in the rhizome anatomy of Equisetum 5
Differentiate between prokaryote and eukaryote.
C-HENT-N-ANSMA 1
Q2. Explain the molecular basis of plant-pathogen interaction. 10
Explain variations in male reproductive structures in liverworts.
Briefly discuss the phyloge..iy of algae. 10
Write notes on the distribution of bryophytes and pteridophytes in deciduous and evergreen forests of India. 10
Q3.(a) What is meant by modelling · and how does it help in disease
forecasting 10
Giving suitable reasons, discuss inter-alia evolutionary status of ..
Psilotum, Selaginella and Marsilea. 15
Discuss the role of amphibious plants in the evolution of land plants. 15
Q4.(a) Explain to what extent has the technique of micropropagation been
successful in achieving our goals. .15
Citing suitable examples, explain how laxity in quarantine procedure
can have disastrous effects. 15
Write a brief note on the advantages of diploid carposporophyt,e
generation in red algae. 10

SECTIONB
Q5. Answer the following keeping your answers brief and to the point 5x8=40

Differentiate between megasporogenesis and megagametogenesis.5

Differentiate between Palaeozoic and Coenozoic plants. 5

Differentiate between Isotype and Syntype. 5

Comment on the stratification of pollen grain walls. 5
Why are gymnosperms called naked-seeded plants? What are the angiospermic features of Gnetum 5
Comment on Plumbago type of embryo sac development. 5
(g)what are the angiospermic features of gnetum?
What are the unique features of Brassicaceae
10x4=40

Q6. Draw scientifically accurate diagrams of the following and label the
parts:

Floral formula and floral diagram of Ranunculaceae and Rosaceae 10
L.S. of capsule of Funaria 10
Anatomy of Pinus needle 10
Stages depicting the formation of vegetative and generative cells during
male gametophyte development in angiosperms 10
Q7.(a) Ethnobotany provides important clues to the discovery of modern
drugs." Justify the statement giving suitable examples. 15
"Gnetum is a link between seed plants. and seedless plants." Justify the statement. 10
Differentiate between normal and abnormal secondary growth in dicot
stem. Discuss with diagTams wherever necessary. 15
Q8.(a) Compare Bentham and Hooker's system of classification with the system
of classification of Hutchinson. 15
Give a concise account of Cordaitales and justify why they form an
important group. 10
Write the botanical name, family, active constituents and uses of any
five medicinal plants of commercial importance in India. 15