CSS Botany Past Paper 2008
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2
(a) Discuss the methods of reproduction in algae.
(b) Write an essay on the economic importance of algae.
(c) What are the affinities of algae with the land plants?
Q. No. 3
(a) Describe general characteristics of fungi.
(b) Compare and contrast the characteristics of Basidiomycetes with that of Zygomycetes.
(c) Write short note on parasexuality.
Q. No. 4
(a) What are the affinities of Bryophytes with that of Pteridophytes and algae?
(b) Draw a labeled diagram of longitudinal section of the sporophyte of Anthocerose.
(c) Write a note on asexual reproduction of Bryophytes.
Q. No. 5
(a) Describe the evolutionary trends in the structure of sporophyte among Pteridophytes.
(b) Describe the characteristic features of Selaginella towards seed habit.
(c) Draw a labeled diagram of transverse section of stem of Equisetum.
Q. No. 6
(a) “Ginkgo is a living fossil” Comment on this statement.
(b) What affinities of Gymnosperms have with Angiosperms?
(c) Draw a labeled diagram of transverse section of the leaf of Cycas.
Q. No. 7
(a) Describe in detail the cell types present in xylem.
(b) Write notes on the following:
(i) Nodal anatomy
(ii) Sieve tubes
(iii) Laticifers
Q. No. 8
(a) What is Nomenclature? Describe the history of principles of nomenclature.
(b) Write the names of the families of any five of the following plants:
(i) Cassia fistula
(ii) Tribulus terrestris
(iii) Triticum aestivum
(iv) Hibiscus esculentus
(v) Eleagnus angustifolia
(vi) Punica granatum
(vii) Saccharum officinarum
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2
(a) Define plant growth hormone. Discuss the role of auxins in plant growth.
(b) Describe the role of ethylene in fruit ripening.
Q. No. 3
(a) Discuss the process of CO₂ fixation in C₃ and C₄ plants.
(b) Draw the Z-scheme of photosynthesis.
Q. No. 4 Write notes on the following:
(i) TCA cycle
(ii) Micronutrients
(iii) Mechanism of enzyme action
(iv) Photophosphorylation
Q. No. 5
(a) What is plant succession? Describe the process of plant succession starting in a lake.
(b) Write notes on:
(i) Soil texture
(ii) Food chain
Q. No. 6 Write short notes on the following:
(i) Air pollution
(ii) Energy flow in ecosystem
(iii) Natural resources
(iv) Climate zones
Q. No. 7
(a) Describe the ultra-structure of Mitochondria.
(b) Enlist the functions of Mitochondria.
(c) What do you know about the evolution of Mitochondria?
Q. No. 8
(a) Describe the basis of laws of Segregation and Independent assortment presented by Gregor Mendel.
(b) What are the characteristics of a model plant organism to study genetics?