CSS Botany Past Paper 2013
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2 Discuss evolutionary trends in Bryophytes with special reference to development of spores and associated structures.
Q. No. 3 What are “FUNGI”? How are they different from plants? Explain the industrial applications of “FUNGI”.
Q. No. 4 Write a detailed account on the development of endosperm in plants.
Q. No. 5 What is speciation? Explain modern trends in plant systematics.
Q. No. 6 Why are algae known as thallophytes? Give the economic importance of algae.
Q. No. 7 Write critical notes on microsporogenesis and megasporogenesis.
Q. No. 8 Write notes on any TWO of the following:
(a) Chemotaxonomy
(b) Evolutionary tendencies in gymnosperms
(c) Normal and abnormal secondary growth
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2 What are the various criteria of essentiality of mineral elements for plants? Support your answer with examples.
Q. No. 3 What is seed dormancy and give its types? How is dormancy important to plant life? Give merits and demerits of seed dormancy.
Q. No. 4 What is an ecosystem? What are the components of an aquatic ecosystem and how is it important to life on Earth?
Q. No. 5 “Pollution is hampering our daily life activities.” Justify this statement citing appropriate examples.
Q. No. 6 Differentiate between mitosis and meiosis. Also, show how meiosis is significant in continuity to the next generation.
Q. No. 7 Define mutations and mutagens. Give details of various means for the production of mutants in genetic studies.
Q. No. 8 Give a detailed descriptive and illustrative account of the fine structure of a gene.