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Posted Date: 05 Jul 2008 Posted By: richa Member Level: Silver
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2006 Banaras Hindu University Botany b.sc (hons)part 3 examination 2007 Question paper
botany comparative studies of phanerogams
time 3 hours full marks 75
answer 5 questions each from section -A and section ,B section ,-C is compulsory all questions carry equal marks sections_A
1_ what is chemotaxonomy? with suitable examples mention how chemotaxonomy has helped in solution of taxonomic problems in angiosperms [marks 15]
2. give an account of morphology, anatomy and reproductive features of pentoxylon [marks 15]
3.with the help of floral formula and floral diagram mention the distinguishing features of family Meliaceae. mention the economic importance of the family.
4 . write brief account on the recent advances in the field of experimental embryology.;[marks 15]
section -B
5 ..write a short notes on any two of the following[ marks 7.5*2]
(a)Williamsonia (b)living fossil (c)female flower of Ephedra
6.differentiate between any three of the following;[marks 5*3]
(a)bordered pit and bars of sanio
(b) pollen grains of cycas and pinus
(c) natural and phylogenetic system of classification
(d) external morphology of ginkgo and pinus
7.write short notes on any two of the following;[marks 2*7.5]
(a)polyembryony
(b)merits and demerits of Takhtajan system of classification.
(c) methods in numerical taxonomy
8. dishtinguish between any two of the following;bars of families [marks 2*7.5]
(a)Liliaceae and Cyperaceae
(b)Asteraceae and Scrophulariaceae
(c)Rutaceae and Annonaceae
section c
9'answer the following in not more than 50 words_ [marks 1.5*10]
(a)name a medicinal plant of liliaceae
(b)name a gymnosperm producing sago
(c)mention one angiosperm like feature of Gnetum
(d)name a gymnosperm in which ovule are bitegmic
(e)name a plant in which floral bud is modified into tendrils
(f)define the parthogenesis
(g)give floral formula of Convolvulaceae
(h)which type of placentation is found in Chenopodiaceae
(i)which type of fruit is found in Asteraceae
(j)who is the father of plant tissue culture
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