Banaras Hindu University (BHU) 2006 B.Sc Botany (hons)part 3 2007 - Question Paper

botany comparative studies of phanerogams

time three hours full marks 75

ans five ques. every from part -A and part ,B part ,-C is compulsory all ques. carry equal marks sections_A

1_ what is chemotaxonomy? with suitable examples mention how chemotaxonomy has helped in solution of taxonomic issues in angiosperms [marks 15]
2. provide 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 latest advances in the field of experimental embryology.;[marks 15]


part -B


5 ..write a short notes on any 2 of the following[ marks 7.5*2]

(a)Williamsonia (b)living fossil (c)female flower of Ephedra

6.differentiate ranging from any 3 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 2 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 ranging from any 2 of the following;bars of families [marks 2*7.5]

(a)Liliaceae and Cyperaceae

(b)Asteraceae and Scrophulariaceae

(c)Rutaceae and Annonaceae



part c

9'answer the subsequent 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 1 angiosperm like feature of Gnetum

(d)name a gymnosperm in which ovule are bitegmic

(e)name a plant in which floral bud is replaced into tendrils

(f)define the parthogenesis

(g)give floral formula of Convolvulaceae

(h)which kind of placentation is obtained in Chenopodiaceae

(i)which kind of fruit is obtained in Asteraceae

(j)who is the dad of plant tissue culture

Earning:   Approval pending.