CSS Botany Past Paper 2009
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2
(a) Describe the life history of any multicellular green alga.
(b) Write note on different parameters which are used in classification of algae.
Q. No. 3
(a) Describe the general characteristics and methods of reproduction in fungi.
(b) Discuss five plant diseases of economic importance caused by fungi.
Q. No. 4 Explain in detail the evolution of gametophyte and sporophyte in bryophytes.
Q. No. 5 What is pollination and fertilization? Give an account of post fertilization events leading to the development of seeds in angiosperms.
Q. No. 6 What do you understand by secondary growth? Describe the process in detail in a typical Dicot Stem.
Q. No. 7 Explain the different systems of classification in angiosperms. Also discuss the modern trends in plant taxonomy.
Q. No. 8 Enlist the salient features of gymnosperms. Also describe the features in which this group resembles and differs with pteridophytes.
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2
(a) What is photophosphorylation? Describe the cyclic and non-cyclic photophosphorylation.
(b) Enlist the essential plant mineral elements. Discuss the uptake of phosphorous and its role in plant metabolism.
Q. No. 3
(a) Write note on:
(i) Photoperiodism
(ii) Vernalization
(b) What are enzymes? Discuss the chemical nature and mechanism of enzyme action.
Q. No. 4
(a) Write an essay on the role of climatic and edaphic factors on plant growth.
(b) Discuss the problem of water logging and salinity. Also suggest important methods for the reclamation of water logged and saline soils.
Q. No. 5
(a) Describe the ultrastructure of chloroplasts.
(b) Write notes on:
(i) Biochemical nature of hereditary material
(ii) Sex linked genes.
Q. No. 6
(a) Discuss the role of water in plants.
(b) Explain the concepts and productivity of ecosystems.
Q. No. 7 Write notes on the following:
(i) Auxins
(ii) Osmosis
(iii) Transduction
(iv) Significance of meiosis
Q. No. 8 Describe in detail the different theories of evolution. Also discuss the merits and demerits of these theories.