LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

THIRD SEMESTER – NOVEMBER 2010

PB 3508/PB 3504 – CELL BIOLOGY AND ANATOMY

 

 

 

Date : 02-11-10                     Dept. No.                                                    Max. : 100 Marks

Time : 9:00 – 12:00

PART-A (20 Marks)

Answer ALL questions

 

1. CHOOSE THE CORRECT ANSWER (5X1=5)
2. Fibres occurring in the  region of phloem are otherwise known as:
3. Bast b)   phloem  parenchyma    c)   companion cells      d) Sieve tube
4. The chromosomes with the centromere at the proximal  end  is called
5. Telocentric b) acrocentric             c)    metacentric                 d) acrocentric
6. The site of protein synthesis is
7. Ribosomes        b) nucleus           c)  cytoplasm                   d) Golgibodies
8. Reduction in chromosome number occurs after
9. Mitosis b) Meiosis            c) Linkage                      d) amitosis
10. In Bignonia  the anomalous secondary growth  is due to
11. Medullary bundle b) Cortical bundle    c) Included  phloem        d) Excluded phloem.

 

1. State Whether the following statements are true or False:                                          (5×1=5)

 

6. Lactiferous vessels are found in xylem.
7. Number of vascular bundles in monocot stem is unlimited.
8. Histones are basic
9. Mitochondria is called the power house of a cell.
10. The anomalous secondary structure in Achyranthes is inverted  cortical bundle.

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

 

11. The chromosome bearing knob – like appendages are called —————–.
12. —————– is deposited in the endodermal cell wall.
13. Xylem is a ——————permanent tissue.
14. Photorespiration takes place in ——————–.
15. Primary xylem in dicot root is —————-.
16. Answer the following , each within 50 words only (5X1=5)

 

16. What is raphide?
17. Define Idiogram.
18. Define amitosis.
19. What is Bicollateral vascular bundle?
20. What is Isobilateral leaf?

PART – B

 

Answer the following , each answer within 500 words ,

draw diagrams wherever necessary                                                                       (5×7=35 marks)

 

21. a) Write an account on principles and applications of SEM.

(Or)

1. b) Write an account on the principles and uses of TEM.
2. a) Describe the structure of Lampbrush chromosome.

(Or)

1. Describe the structure of Polytene chromosome.
2. a) Explain the sub stages of Prophase I of meiosis.

(Or)

1. b) Describe the stages of mitosis.
2. a) Write an account on vascular cambium.

(Or)

1. Describe the types of meristems.
2. a) Write an account on nodal anatomy.

(Or)

1. b) Describe the various stomatal types.

PART – C

 

Answer any three of the following , each with 1200 words ,

draw diagram wherever necessary .                                                                       (3X15=45 marks)

 

26. Explain the Ultra structure and function   of chloroplast.
27. Write a detailed account of Nucleic acids.
28. Give a detailed account on Xylem.
29. Discuss the theories related to apical organization in shoot.
30. Describe the secondary growth in a dicot root.

 

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

THIRD SEMESTER – APRIL 2011

PB 3508/PB 4505 – CELL BIOLOGY AND ANATOMY

 

 

 

Date : 25-04-2011              Dept. No.                                                  Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A (20 MARKS)

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

 

1. The annular diaphragm is present in the microscope
2. Phase contrast b) Compound           c) Fluorescent          d) Dark – field
3. Anisocytic stomata is seen in
4. Hibiscus             b) Solanum               c) Ixora                       d) Oryza
5. The nongranular peripheral part of cytoplasm is known as
6. hyaloplasm b) endoplasm            c) ectoplasm              d) kinoplasm
7. The minute particles present in mitochondrian outer membrane are called:
8. Glyoxysomes b) Peroxisomes                    c) Lysosomes            d) Oxysomes
9. Cork cambium is an example of meristem:
10. Lateral             b) Primary                  c) Apical                    d) Intercalary

 

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

 

6. Raphide is a non-protoplasmic cell inclusion.
7. The mesophyll tissue is undifferentiated in dorsiventral leaves.
8. The main axis of Lampbrush chromosome contains a series of thickenings called chromomeres.
9. Lysosomes originate from golgi bodies.
10. In a dark field microscope, the light intensity is controlled by iris diaphragm.

 

• Complete the following (5 x 1 = 5)

 

11. The Tunica – corpus theory was proposed by ________________.
12. The tips of chromosomes are called ______________.
13. Vascular bundles are collateral and closed in the stems of ____________.
14. Cystolith is made up of ____________.
15. Proteins are synthesized by the cell organelles called ________________.

 

 

 

1. Answer the following each within 50 words                                                      (5 x 1 = 5)

 

16. State the principles of Light microscope.
17. Define Cell theory.
18. What are Lenticels?
19. Comment on phagocytosis and pinocytosis.
20. What are peroxisomes?

 

PART – B

Answer any FIVE of the following, each in about 350 words.

Draw necessary diagrams.                                                                                      (5 x 7 = 35 marks)

 

21. a) Briefly describe the working principle of fluorescent microscope.

(OR)

1. Describe the ultra structure and function of endoplasmic reticulum.

 

22. a) Give an account of the various stages of mitosis.

(OR)

1. b) Describe briefly the theories on Apical meristem.

 

23. a) Describe the chemical composition of Nucleus.

(OR)

1. b) Write short notes on cell cycle.

 

24. a) Discuss about meristematic tissues.

(OR)

1. b) Write notes on the ultra structure of plant cell wall and its chemical composition.

 

25. a) Describe the structure of Achyranthes root.

(OR)

1. b) Discuss the structure of Dracaena

 

PART – C

 

Answer any THREE of the following, each within 1,200 words.  Draw necessary diagrams.

(3 x 15 = 45 marks)

26. Explain the structure, working principles and components of Transmission Electron

Microscope.

27. Discuss in detail about the various stages of meiosis. Add a note on its significance.
28. Explain the structure of vascular tissues.
29. Compare the anatomy of dorsiventral and Isobilateral leaves.
30. Explain the ultra structure, chemical composition and function of mitochondria.

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

THIRD SEMESTER – APRIL 2012

PB 3508/PB 3504 – CELL BIOLOGY AND ANATOMY

 

 

 

Date : 26-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

ANSWER THE FOLLOWING , EACH WITHIN 50 WORDS ONLY:                          (10X2=20)

 

1. What is raphide?
2. What is the role of peroxisomes?
3. What are satellite chromosomes?
4. Define Idiogram.
5. What is a bordered pit?
6. What is meristem?
7. Define Endarch.
8. What is bicollateral vascular bundle?
9. Explain unilacunar node.
10. What is paracytic stomata?

PART – B

 

ANSWER THE FOLLOWING , EACH ANSWER WITHIN 500 WORDS;

DRAW DIAGRAMS WHEREVER NECESSARY:                                                   (5X7=35 Marks)

 

11. a) Write the principles and application of Scanning Electron Microscpe.

(OR)

1. b) Describe the structure and functions of endoplasmic reticulum.

 

12. a) Discuss the types of Nucleic acids.

(OR)

1. b) Write notes on chromosomal nomenclature.

 

13. a) Describe the stages of prophase –I of meiosis.

(OR)

1. b) Write short notes on secretory tissue.

 

14. a) Write an account on cambium.

(OR)

1. b) Discuss the types of meristem.

 

15. a) Give an account on stomatal types.

(OR)

1. b) Explain anomalous secondary growth in Achyranthes

 

 

PART – C

 

ANSWER ANY THREE OF THE FOLLOWING, EACH WITH 1200 WORDS;

DRAW DIAGRAMS WHEREVER NECESSARY:                                                  (3X15=45 Marks)

 

 

16. Write a detailed account on the ultrastructure of chloroplast and its functions.
17. Describe giant chromosomes.
18. Give an account on xylem.
19. Discuss the theories relating to apical meristems.
20. Describe the anomalous secondary growth in dicot stems.

 

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

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

THIRD SEMESTER – NOVEMBER 2012

PB 3508/3504/4505 – CELL BIOLOGY AND ANATOMY

 

 

 

Date : 05/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

Answer the following, each within 50 words:                                                 (10 x 2 = 20 marks)

 

1. State the principle of fluorescent microscope.
2. What are lysosomes?
3. Define karyotype.
4. What is telomere?
5. Define cell cycle.
6. What are secretory cells?
7. Define apical meristem.
8. What is meant by exarch xylem?
9. What is anisocytic stomata.
10. What is unilacunar node?

 

PART – B

Answer the following, each within 500 words: 

Draw diagrams, flowcharts wherever necessary:                                         (5 x 7 = 35 marks)

 

11. a) Briefly explain the working principle of phase contrast microscope.

(OR)

1. b) Describe the ultrastructure of nucleaus.
2. a) How are chromosomes classified.

(OR)

1. b) Classify nucleic acids and add a note on histones.

 

13. a) Draw and explain the different stages in Mitosis.

(OR)

1. b) What are permanent tissues? Give an account on Schlerenchyma.

 

14. a) Classify and explain the types of meristem.

(OR)

1. b) Write a brief account on vascular cambium.

 

 

15. a) Draw and explain the primary structure of a dicot stem.

(OR)

1. b) Give a brief account on the anatomical features of Dracaena stem.

 

 

PART – C

 

Answer any THREE of the following, each within 1200 words;

Draw diagrams, flowcharts wherever necessary:                                          (3 x 15 = 45 marks)

 

16. Describe in detail the structure and function of chloroplast.
17. Give an account giant chromosomes.
18. Draw and explain the different stages of meiosis.
19. Give an account on theories of apical meristem.
20. Explain anomalous secondary growth in Bignonia.

 

 

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