LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
THIRD SEMESTER – APRIL 2008
PB 3502 - ANGIO. TAXONOMY & EMBRYOLOGY
Date : 26/04/2008
Time : 1:00 - 4:00
Dept. No.
KL 8
Max. : 100 Marks
PART – A
Answer all the questions
I Choose the best answer
01.
02.
(20 marks)
(5 x 1 = 5)
Central National Herbarium is located at
a. New Delhi
b. Coimbatore
c. Calcutta
Gynophore is characteristic to the family
a. Rubiaceae
b. Apocyanaceae
c. Anacardiaceae
d. Lucknow
d. Capparidaceae
03.Which of the following is used as a mosquito and vermin repellant?
a. leaves of Eucalyptus dives
b. stem of Pelargonium graveolens
c. leaves of Nicotiana tabaccum
d. bark of Cinchona officinalis.
04.Polysiphonous pollen grains are found in
a. Malva
b. Asclepias
c. Calotropis
d. Moringa
05. Cross pollination between flowers borne on different plants of the same kind is called
a. xenogamy
b. geitenogamy
c. dicliny
d. dichogamy
II State whether the following are true or false.
(5 x 1 = 5)
06. Plant with bisexual flowers are called as dioecious plants
07. Bicollateral vascular bundle is unique to the family Rubiaceae.
08. Rhizomes of Acorus calamus are used medicinally as carminative and expectorant.
09.Function of filiform apparatus is to supply nutrients to the developing pollen.
10.In angiosperms, endosperm is formed as a result of triple fusion..
III Complete the following.
(5 x 1 = 5)
11. Petals separate, hypogynous ovary, many stamens and pistils are characters of the
series-----------------.
12. In Linnaean classification, plants with hidden flowers are grouped under the class -----------------.
13. The oil derived from the waste of the bark peeling process of Cinnamon is used as-------------------.
14. The seedless fruits are called ………
15. Perisperm is found in the members of ………..
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IV Answer the following questions each in about 50 words
(5 x 1 = 5)
16. What is effective and valid publication?
17. Define syngenesious anthers.
18. Write the economic importance of Elettaria cardamomum.
19. What is Apomixis?
20. What is ruminate endosperm?
PART – B
Answer any five of the following each in about 350 words .
(5 x 8 = 40)
21. Describe the floral characters of the families Cucurbitaceae and Liliaceae.
22. Write short notes on numerical taxonomy.
23. Using indented key, classify the following plants by selecting sets of characters:
Oryza sativa
Allium sativum
Euphorbia hirta
Achyranthus aspera
Ixora coccinea
Cleome viscosa
24. State the economic importance of any two narcotics and two essential oil yielding
plants.
25. Write the botanical name, family, and morphology of useful parts and uses of any two
each of condiments and timber yielding plants.
26. Write notes on different types of angiospermic ovules.
27. Write briefly on the development of bisporic and tetrasporic embryo sac.
28. What is polyembryony? Write a note on its types, causes and significance.
PART – C
Answer the following questions each in about 1500 words.
(2 x 20 = 40)
29. (a) Compare the salient features of the families Amaranthaceae and Euphorbiaceae.
OR
(b) Write in detail Bentham and Hooker’s system of classification.
30. (a) Describe the process of development of microsporangium and microspores.
OR
(b) Write an essay on the structure and development of dicot embryo.
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