M.Sc. (Semester II) (CBCS) Examination Nov/Dec-2018
Botany
BIOLOGY DIVERSITY OF GYMNOSPERMS AND PALAEOBOTANY
Time: 2½ Hours Max. Marks: 70
Instructions: Attempt total five questions.
Figures to the right indicate full marks.
Attempt any two questions from question no. 2 to 4.
Attempt any two questions from question no. 5 to 7.
Q.1 Rewrite the sentences by choosing correct answer from given alternatives: 14
Fusiform medullary rays are characterized by having
Sclerenchyma Bars of sanio
Protoxylem Resin canals
It is used as most valuable timber
Cedrus Araucaria
Podocarpus Cupressus
Araucaria pit pores are
Vertical Circular
Horizontal Oblique
The only Gymnosperm having CAM, is
Thuja Zamia
Taxus Welwitschia
Canada balsam is obtained from
Cycas circinalis Abies balsamea
Zamia floribunda Agathis purpurea
In female cone of Zamia arrangement of megasporophylls along the central
axis is
Valvate Axillary
Papilaceous Overlapping
Presence of hump is the characteristic of the male cone of
Taxus Ginkgo
Cupressus Ephedra
An alkaloid obtained from is used in ovarian cancer.
Ephedra Cupressus
Taxus Ginkgo
Calamites shows close affinity with living genus
Anthoceros Sphagnum
Equisetum Riccia
10) First account of Psilophytales was given by
Mackie Kidston and Lang
Sir William Dawson Krausel and Hirmar
11) Coal is type of fossil.
Impression Compression
Petrification None of the above
Page 2 of 2
SLR-VD-98
12) Pteridosperms developed climax in
Devonian Carboniferous
Permian Jurassic
13) In Rhynia type of stele is present.
Protostele Eustele
Siphonostele Plectostele
14) The seed of Lyginopteris was
Orthotropus Anatropus
Hymenotropus Campylotropus
Q.2 Explain the diversity of gymnosperms with respect to anatomy.
Describe out line of Indian fossil flora with special reference to Lower
Gondawana.
07
07
Q.3 Give modern trends in classification of Gymnosperms.
Give important features of Cordaitales.
07
07
Q.4 Give an account on phylogeny of Coniferales.
Explain Glossopteris flora.
07
07
Q.5 Describe:-
Give salient features of order Psilophytales. 05
Describe Rajmahal hill flora of upper Gondwana. 05
Write short note on Amber. 04
Q.6 Explain:-
Write salient features of welwitschiales.
05
Lepidocarpon 05
Lyginopteris 04
Q.7 Write shot notes. (Any two) 14
Male cone of Podocarpus
Female cone of Taxus
Economic importance of coniferales.