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( Bryophytes and Pteridophytes
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FulI Marks: 60'
Time
The figvres
'
1.
:
2Yz bautrs
ln the margin. indiqate fuil
:
. fo, the.eueitio* ''
marks
Choose and qrrite the correct answer of the
following
(a)
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T\rberculate rhizoids are present in
which of the following genera?
(i) Riccia
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.
(ii) Marehanti.a '
(iii) Anthoceros
(w)
'sphagnum
A15-l?00164
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,
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.,,
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t'i
Tuin'O,uer')
(21
tb)
t3l
Tlrrf Moss' is a common narne of
f]
(t) Anthoceros
(ii) Sphagnum
Indusium is present in spore-producing
organ of
(t) horsetail
(!r) maiden hair fern:
(iit) both horsetail and maiden hair fern
(iul None of the above
(iii) Polgfichum
(iu) Marchantia
(c)
(g)
Presence of pe-itate sporangiophores are
characteristic fEatures- of
ft.) Psilopsida
(it) Lycopsida
, (iii) Sphenopsida
(iui Pteropsida
The protecting layer arching the capsule
of Potgtrichum is
ft.) peristome
(it) coiumella
(iirl calyptra
(dul apophvsis
2.
(d)
Which of the foU,owing characters
iird.icate xerophytic nature
(t) Adventious
(a)
of equisehtm?
roots
(it) Subterranean rhizorne
Spore-bearing organs
known as
(t)
(i4
s5mangium
(iu/
sorus
strobilus
{&4 sporocarp
A15-1700164
of
2x4:8
:
Acrogrnae
and
Jungerma4niales
Anacrogmae
(b) Eusporangiate and
Leptosporangiate
sporangia
{iir/ Sunken stomata on stem
{iul Root hairs
(e)
Distinguish between the following
(c)
(d)
Psilohtm is
3.
Protostele and Siphonostele
Amphethecium and Endothecium
Write notes on any three of the following
:
5x3= 15
(a)
.
Internal structure of rhizome in moss
(b) , Economic importance of bryophytes
(e) Appendages" of " gametophytes ' of
,
.r,:i,
i,
i
hepaticopsida
:
( Contirued. )
A15--1700/64
('Tum'Ouer )
(41
(d.) Morphologr
4.
of rhizophore in Selaginefia
(e)
Morphologr of spore-bearing organs in
Marsilea
A
Morphologr of protocormii Lgcopodium
Answer the following questions
:
(a) Give an account on the structure of
mature sporophyte of ' Sphagnum.
Describe its spore dispersal mechanism.
10
Or'
Illustrate the theory of .progressive
sterilization of potentially sporogenous
tissues' to explain line of evolution of
sporophytes among bryophytes.
(b)
Write an account on heterospory and
seed. habit in pteridophytes.
10
Or
Give a coneparative account on stelar
organization of Equisedtm and Marsilea
stem.
(c)
'-'
thi structure of sex organs of
Marchantia Draw the pattern of life
Describe
cycle.
10
'or
Describe with diagram the sporoph5rtic
generation of Adiantum
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Ars-L7OOl64
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