Time allowed : Three hours Maximum Marks: 200
SECTION A
1.
Answer any four of the following (answer shout not exceed 150 words in each case):
(a)
Write short notes on the following:
(i)
F-factor
(ii)
Dolipore
(iii)
Pseudoelaters of Anthoceros – the structure and
function
(iv)
Peristomial teeth of Funaria
(b)
With the help of diagrams differentiate between
the following:
(i)
Carinal canals and vallecular canals
(ii)
Homoimerous and heteromerous thallli in lichens
(iii)
Plectostele and dictyostele
(iv)
Structure of Oscillatorial and Nostoc
(c)
answer the following
(i)
How are the young sporogonia of marchantia
protected?
(ii)
Present diagrammatic depictions of different life cycle patterns in Saccharomyces 2pp.
What is the trend exhibited?
(iii)
What makes the bacterial spores highly
resistant?
(iv)
Critically examine some authors’ concept that
the rhizophore can be considered as morphologically a root.
(d)
Write short notes on:
(i)
Plurilocular
sporangia of Ectocarpus
(ii)
Conceptacles of Fucus
(iii)
Spores of Lycopodium in comparison with
those of selaginella
(iv)
Saprophyte of Riccia at maturity
(e)
Provide brief notes on:
(i)
Lysozyme
(ii)
Viroids
(iii)
Oogamy
(iv)
Synangum of psilotum
2.
(a) With the help of labeled diagrams only
depict the major stages and events in the life cycle of Funnaris.
(b)
Giving suitable examples, highlight the economic
importance of marine algae
3.
(a) Give an account of the causal organism,
symptoms and control of red rot of sugarcane.
(b) Enumerate the benefits of bacteria.
4.
Draw neat labeled diagrams of the following:
(i)
Stages in sexual reproduction of Penicillium
(ii)
T.S. of rhizome of pteridium
(iii)
Life cycle of Puccinia graminis
(iv)
Life cycle of polysiphonia
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