LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & BIOTECHNOLOGY

IB 11

FOURTH SEMESTER – APRIL 2006

                                                  PB 4505 – CELL BIOLOGY & ANATOMY

 

 

Date & Time : 27-04-2006/9.00-12.00         Dept. No.                                                       Max. : 100 Marks

 

 

Part A

 

Answer all the questions                                                                     (20 marks)

 

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

 

1. __________ is the capacity of an optical system to show distinct images
2. a) optical power b) photon power          c) resolution                d) resolving power
3. Which are present in all living cells that can synthesise proteins?
4. a) peroxisomes b) ribosomes                c) glyoxysomes           d) lysosomes.
5. These are tiny bags filled with digestive enzymes for intracellular digestion.
6. a) lysosomes b) dictyosomes            c) peroxisomes            d) ribosomes
7. Sandal wood is
8. a) heartwood b) sapwood                 c) spring wood                        d) both a and c
9. Leaf gap and leaf trace are seen in
10. a) internodes b) petiole                     c) nodes                       c) apical meristem

 

1. State whether the following statements are True or False (5 x 1 = 5 )

 

6. Cytotaxonomy is based on the atypical sets of chromosomes in different species.
7. Mitochondria may be filamentous or agranular in shape.
8. Stone cells are also called as osteosclerides.
9. Histogen theory was propounded in the year 1870.
10. Bulliform cells are seen in all leaves.

 

III. Complete the following                                                                 (5 x 1 = 5)

 

11. __________ is the viscous, translucent, colloidal substance of the cell.
12. The non-protoplasmic substances present in the cell are called ____________ substances.
13. ____________ are the suspended non-living structures of the cytoplasm.
14. Nectar producing structures found in parts other than flowers are called _____________.
15. In primitive angiosperms, the cambium is of _______ type.

 

1. Answer the following in about 50 words (5 x 1 = 5)

 

16. Cell theory.
17. Karyotype and Idiogram.
19. Kappe-Korpe theory.
20. Secondary vascular bundles.

 

Part B

 

Answer any five of the following, each in about 350 words. Draw necessary diagrams.                                                                            (5 x 8 = 40)

21. Enumerate the scopes of cytology.
22. Explain the working mechanisms and components of Electron microscope.
23. Comment on Lampbrush Chromosomes and Polytene Chromosomes.
24. Briefly describe the structure and function of Golgi apparatus.
25. Describe the structure of a Plant cell.
26. Write notes on simple tissues.
27. Briefly describe the components of epidermal tissue system.
28. Bring out the distinguishing features of the root in Dicots and Monocots.

 

 

Part C

 

Answer the following questions in about 1500 words. Draw necessary diagrams

(2 x 20 = 40)

 

29. a. Describe the structure and function of plasma membrane.

(or)

 

1. Identify and explain the different phases of mitotic division.

 

30. a. Give a detailed account on the structure and chemistry of cell wall.

 

(or)

 

1. Elucidate the various theories on the organization of shoot apices.

 

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