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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034 B.Sc.DEGREE EXAMINATION PLANT BIOLOGY AND PLANT BIOTECHNOLOGY FOURTHSEMESTER APRIL 2017
PB 4510- ANGIOSPERM TAXONOMY AND ECONOMIC BOTANY
Date: 21-04-2017 Dept. No. Max. 100 Marks
09:00-12:00
PART- A (10×2=20marks) Answer the following, each within 50 words.
1. What is palynology?
2. Write notes on alkaloids from plants.
3. Define typification.
4. What is avalid publication?
5. Explain the fruit of cashew nut.
6. What are polygamous flowers?
7. Mention any two economically useful plants of Rubiaceae.
8. What is a corona?
9. Mention the binomial of any four millets.
10.What are narcotics?
PART- B (5×7=35marks) Answer the following, each within 500 words. Draw diagrams and flow charts wherever necessary.
11. (a)Distinguish between indented and bracketed keys. OR
(b)Outline the classification of Linnaeus.
12. How is phytochemistry helpful in plant identification? OR
(b)Elaborate the role of ICBN.
13. (a)Describe the salient features of Cucurbitaceae. Mention any five economically important plants. OR
(b)Explain the gyandrophore and androphore of the family Capparidaceae. 14. (a)Discuss the floral variations in Euphorbiaceae. OR
(b)Explain the floral characters of Orchidaceae.
15. (a)What is timber? Mention the botanical name and family of any 5 timber yielding plants. OR
(b)Enumerate the source and uses of any 5 essential oils.
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PART- C (3×15=45 marks) Answer any three of the following, each within 1200 words. Draw diagrams and flow charts wherever necessary.
16. Outline the classification of Bentham and Hooker. Add a note on its merits and demerits.
17. Write detailed notes on herbarium technique.
18. Give a comparative account on the floral morphology of Annonaceae, Rutaceae and Caesalpinaceae.
19. Explain the vegetative and floristic characters of Poaceaeand add a note on its economic importance.
20. Mention the botanical name and family of any five Spices and add a note on its uses and the useful part.