M.Sc. Botany (Semester II) (CBCS) Examination, 2017
BIOLOGY DIVERSITY OF GYMNOSPERMS PALAEOBOTANY WateriI
Day Date: Wednesday, 19-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. Attempt total five questions.
Questions NO.1 is Compulsory.
Attempt any two questions from Question.NO.2 to 4
Attempt any two questions from Question NO.5 to 7
Figures to the right indicate full marks.
Q.1 Choose the correct alternative given in the bracket. 14
Lens shaped and obliquely placed pit pore are present in
Cupressus Podocarpus
Araucaria Agathis
Presence of the hump is the characteristics of the male cone of

Taxus Ginkgo
Ephedra Pinus
The order Coniferales does not include the following family.
Taxaceae Pinaceace
Cupressaceae Podocarpaceae
In the tracheids are characterized by tertiary spiral
thickenings.
Welwitschia Ephedra
Cycas Taxus
In Zamia the arrangement of megasporophylls along the central
axis is
Axillary Velvet
Papilaceous Overlapping
The medullary rays containing are known as medullary
rays.
Linear Pitted
Fusiform All of the above
The stem and seed of yield starch known as
Ginkgo Araucaria
Cycas Agathis
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SLR-RE 150
In the nodal region Medullosa heterostelica steles are
present.
2 3 70 23
Thamnopteris belongs to the family .
Gleicheniaceae Osmundaceae
Schizaceae Marsileaceae
10) Nilssonia is genus of Cycadales.
Stem Leaf Seed Flower
11) Horizontal pit pores is the characteristics of
Podocarpus Araucaria Zamia Taxus
12) Winged pollen grains observed in
Cupressus Ginkgo Ephedra Podocarpus
13) Gikgois considered one of the wonders of the world because, it is

Persisted with little change
Living fossil
Oldest and Persisted with little change
Oldest
14) Coniferales have wood.
Manoxylic Polyxlic Pycnoxylic Monoxylic
Q.2 Give diversity of gymnosperms with respect to morphology. 07
Describe techniques used for fossil studies. 07
Q.3 Justify how the Coniferales are economically important? 07
Give general characters of family Rhyniaceae. 07
Q.4 Describe reproductive structure of Taxus. 07
Write salient features of Benettitales 07
Q5 Describe:
Male flower of Ephedra. 05
Economic importance of Ginkgoales. 05
Kaloxylon Hookeri. 04
0
Q.6 Explain
Male cone of Cupressus. 05
Etapteris 05
Rodeites 04
Q.7 Write notes on any two. 14
Male cone of Araucaria
Male coneof Ginkgo
Stigmaria