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Posted Date: 21 May 2008 Posted By:: Vidya Member Level: Gold Points: 5 (Rs. 1)
2005 Kerala University B.Sc Botany PaperIII-Botany (Subsidiary) Question paper
SECOND YEAR B.Sc. DEGREE EXAMINATION, APRIL IMAY 2005..
Part III--Botany (Subsidiary)
Paper II-TAXONOMY, ANATOMY, EMBRYOLOGY, ENVIRONMENTAL BIOLOGY,
ECONOMIC BOTANY, GENETICS AND PLANT BREEDING
Time : Three Hours Maximum : 50 Marks
Draw diagrams only when specified.
1. Write notes on any ten of the following :
1 Dendrochronology. 2 Allele.
3 Dithecous condition. 4 Legume.'
5 Epipetalous condition.- 6 Antipodals.
7 Triple fusion. 8 Pod.
9 Gynoeciuni. 10 Perennials.
11 Exarch xylem. 12 Casparian strips.
13 Incomplete dominance. 14 Parthenocarpy.
(10 x 1 = 10 marks)
II. Answer any seven of the following :
16 What are the physiological adaptations of hydrophytes ?
17 Explain Histogen theory.
18 What are guard cells ?
19 Define parenchyma.
20 What are puses ? Write the botanical name and the major nutrient component in green gram.
21 Distinguish between test cross and back cross.
22 Explain about the non-essential whorls.
23 What is polyploidy ?
24 Give an illustration of the fruit in Graminae.
25 Explain the gynoecium of Apocyanaceae.
26 Mention the botanical names of any two economically important plants belonging to the
27 Define heart wood.
(7 x 2 = 14 marks)
III. Answer any four of the following :
28 Explain the various cell types of the water conducting complex tissue.
29, Discuss briefly the causes and consequences of soil pollution.
30 Compare the floral characters of Caesalpiniaceae with Minosaceae.
31 Give an illustrative account on the digestive gland in Drosera.
32 Explain plant succession in the Xerosere.
33 What are the different types of anthers found in angiosperms ? Explain with illustrations.
34 Distinguish between microsporogenesis and microgametogenesis.
35 Discuss the importance of herbaria in taxonomical studies.
(4 x 4 = 16 marks)
IV. Answer any one of the following :
36 With the help of diagrams explain normal secondary thickening in a dicot root.
37 Give a brief account on the modern trends in systematic botany.
38 With suitable sketches explain the inheritance of fruit colour in summer squashes.
(1 x 10 = 10 marks)
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