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P.T.O.
MAR IVANIOS COLLEGE (AUTONOMOUS)
THIRUVANANTHAPURAM
Reg. No. :.………………… Name :.…………………
First Semester Career Related B.Sc. Degree Examination, November 2017
First Degree Programme under CBCSS Core Course (for Botany and Biotechnology)
AUBB141: Angiosperm Anatomy and Reproductive Botany
for 2015 Admissions Only
Time: 3 Hours Max. Marks 80
SECTION A
Answer ALL the following each in a word or as short notes.
1. Study of pollen grains present in honey is denoted by which term
2. What is 'pollen kitt'
3. Name the soft tissue in the angiosperm ovary to which the ovules are attached.
4. What is the ploidy level of angiosperm nucellus
5. What is spongy parenchyma
6. Define dendrochronology
7. How the xylem and phloem are arranged in an amphicribral vascular bundle
8. Grittiness of the pear and sapota fruit pulp is due to the presence of which type of cells
9. What are plasmodesmata
10. Calcium and magnesium pectate are mainly present in which region of the plant cell wall
(10 1 10 Marks)
SECTION B
Answer any EIGHT questions, not exceeding one paragraph.
11. Differentiate between simple and bordered pits.
12. Write notes on i). cystolith and ii). raphid
13. Differentiate between primary and secondary meristems.
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14. What is a complex tissue Mention two examples.
15. Draw a labeled diagram of stomata and list out the functions of stomata.
16. What are the major differences between heart wood and sap wood
17. What are annular rings
18. Write a note on the different types of tapetum seen in angiosperm anthers.
19. 'The endosperm of angiosperms is triploid.' Why
20. What are pollinia Mention any one angiosperm family in which plants producing pollinia are included.
21. Differentiate between porogamy and chalazogamy.
22. With the help of a labeled diagram illustrate the structure of a typical dicot embryo.
2 16 Marks)
SECTION C
Short essay type Answer any SIX questions.
23. Write a note on the structure of pollen wall.
24. Explain the process of male gametogenesis in angiosperms.
25. Differentiate between the primary structure of monocot and dicot stems.
26. With the help of suitable diagrams explain the various types of simple tissues seen in plants.
27. Elaborate on 'Histogen theory'.
28. What are tyloses How they are formed
29. How the meristems are classified on the basis of their position Add a note on the different types.
30. What is polyembryony Explain the causes of polyembryony.
31. With the help of a labeled diagram explain the structure of a dorsiventral leaf.
4 24 Marks)
SECTION D
Long essay type Answer any TWO questions.
32. With the help of a labeled diagram explain the primary structure of a typical dicot root. How it differs from that of a monocot root
33. Explain the process of secondary thickening in Dracaena stem.
34. Describe the Allium type of embryosac development.
35. List out the various components of xylem tissue. With the help of suitable diagrams explain the different types of thickenings seen on the walls of xylem vessels.
15 30 Marks)