Methodology and Perspectives of Sciences and an Introduction to the World of Plant Diversity-November 2013

B.Sc. DEGREE (C.B.C.S.S.) EXAMINATION, NOVEMBER 2013
First Semester
Core Course 1 – METHODOLOGY AND PERSPECTIVES OF SCIENCE AND AN INTRODUCTION TO THE WORLD OF PLANT DIVERSITY
(Common for Programmes of B.Sc. Botany Model I, Model II and B.Sc. Botany and Biotechnology [Double Core])

Time: Three Hours Maximum: 60 Marks

Part A (Short answer questions)
Answer all questions
Each questions carries 1 mark (8 X 1 = 8 marks)

1. What is meant by a hypothesis?
2. Who discovered the structure of DNA?
3. Define thallus.
4. What are epiphytes?
5. Name two medicinal compounds obtained from plants.
6. What is the need of replications in experiments?
7. What do you mean by one percent CuSO4 solution?
8. What is allelopathy?

Part B (Brief Answer Question)
Answers any Six of the following
Each question carries 2 mark (6 x 2 = 12 marks)

9.   Briefly explain the significance of meiosis.
10. Explain the contributions of Gregor Johann Mendel in biology.
11. Distinguish treatment from replication.
12. Explain the importance of control in an experiment.
13. What are the constituents of nucleic acids?
14. Differentiate gametophyte from sporophyte.
15. With a labeled diagram, explain the embryo sac in angiosperm.
16. Explain the general features of Bryophytes.
17. Distinguish habit from habitat.
18. What are the characteristics of mangroves?

Part C (Problem/Derivations)
Answer any four questions
Each question carries 4 marks (4 X 4 = 16 marks)

19. Explain different kinds of experimental design you have studied.
20. Differentiate mean from standard deviation.
21. Describe the diversity of pigments in Algae.
22. Explain the thallus structure of lichens.
23. Explain the law of independent assortment.
24. Explain alternation of generation of Pteridophyte with a schematic diagram.

Part D (Long answer/Problem questions)
Answer any two questions
Each question carries 12 marks (12 X 2 = 24 marks)

25. Describe the essential steps followed in an experiment to get useful result.
26. With suitable diagrams differentiate the cellular organization of prokaryote from eukaryote.
27. Briefly explain the evolutionary trends in the plant world up to Angiosperms.
28. With suitable diagrams, explain the significance of meiosis.

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