LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.

THIRD SEMESTER – NOVEMBER 2010

                PB 3506/PB 3502 – ANGIOSPERM, TAXONOMY, ECO.BOTANY &

  EMBRYOLOGY

 

 

 

Date : 30-10-10                     Dept. No.                                                      Max. : 100 Marks

Time : 9:00 – 12:00

PART    –    A                                                       (20 marks)

 

Answer ALL questions:

 

1. Choose the correct answer                                                                                                      (5 x 1 = 5)

 

1. The basic unit in numerical taxonomy is
2. OTU              b) variety              c) Strain                   d) Species
3. Synandrium is characteristic feature of
4. a) Orchidaceae b) Cucurbitaceae      c) Rubiaceae           d) Amaranthaceae                                                                                                                                                                                                                                 
5. The useful part of saffron is
6. a) Rhizome                                 b) Flower bud            c) Stigma                   d) Fruit
7. Entry of pollen tube through integuments is
8.     a) Porogamy                               b) Chalazogamy      c) Mesogamy             d) Xenogamy
9. Ruminate endosperm is found in
10. a) Areca                           b) Polygonum          c) Capsella               d) Malva
11. State whether the following statements are True or False:                         (5 x 1 = 5)

 

6. Species Plantarum was written by Bentham and Hooker.
7. Gynandrophore is characteristic feature of Capparidaceae.
8. The botanical name for Prosomillets is Panicum miliaceum.
9. Endothecial layer is found in embryo sac.
10. Occurrence of more than one embryo in a seed is polyembryony.

III.  Complete the following:                                                                                                            (5×1=5)

 

11. Engler and Prantle system of classification is an example for ————————-.
12. Presence of corona is characteristic of —————————————-.
13.   Cedarwood oil is obtained from—————————————–.
14.     Peperomia is an example of ———————————–.

15.The intermediate type of endosperm is also known as——————————-.

1. Answer within 50 words. (5×1=5)

 

16.   Define Holotype and Lectotype.
17. Write short notes on cyathium.
18. Give an account of condiments.
19. Distinguish between Dichogamy and Herkogamy.
20. Write short notes on nuclear endosperm.

PART – B                                            (5X7=35 marks)

 

ANSWER THE FOLLOWING,EACH ANSWER WITHIN 500 WORDS,DRAW DIAGRAMS   

   WHEREVER NECESSARY.

 

21. a) Give an account on Linnaeus Classification.

(Or)

1. b) Describe the importance of molecular systematics.
2. a) Describe the salient features of Anacardiaceae.

(Or)

1. b) Describe the salient features of
2. a) What are millets?Give the botanical name,parts used and uses of any 3 millets.

(Or)

1. b) Give the botanical name, family, uses and morphology of the useful parts of any 3

medicinal plants.

24. a) Draw and describe the internal structure of mature anther.

(Or)

1. Define pollination. Describe the contrivances for cross pollination
2. a) What is double fertilization?  Give an   account of the post-fertilization changes.

Or

1. b) Explain the development of embryo in

 

PART –   C                                             (3×15=45 marks)

 

ANSWER ANY THREE OF THE FOLLOWING,EACH WITH 1200 WORDS; DRAW DIAGRAMS WHEREVER NECESSARY

 

26. Give the outline  classification of  Bentham and Hooker. Mention its merits and demerits.
27. Describe the vegetative and  floral  features of  Orchidaceae. Add a note on their economic

importance.

28. Give the binomial,family,uses,and morphology of their useful part of any 2 each of beverages,

narcotics, essential oil and timber -yielding plants.

29. Describe in detail the structure and development of Bisporic and Tetrasporic embryo-sac.
30. Write an essay on Polyembryony.

 

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