CLASS: B.Sc. BOTANY
11N/ 109
St. JOSEPH’S COLLEGE (AUTONOMOUS) TIRUCHIRAPPALLI – 620 002
SEMESTER EXAMINATIONS – NOVEMBER 2011
TIME: 3 Hrs.
MAXIMUM MARKS: 100
SEM
SET
PAPER CODE
TITLE OF THE PAPER
I
2011
11UPB130201
ALGAE AND BRYOPHYTES
SECTION – A
Answer all the questions:
20 x 1 = 20
Choose the correct answer:
1.
2.
3.
4.
5.
Phycology is the study of
a) Fungi
c) Bryophyter
b)
d)
Algae
Bacteria
Alginic acid is obtained from
a) Lamineria
c) Spirogyra
b)
d)
Gracilaria
Cladophora
Cap cells are characteristic of the genus
a) Spirogyra
c) Oedogonium
b)
d)
Vaucheria
Chara
Bryophytes are of
a) Great ecological values
c) Great fuel value
b)
d)
Great economic value
No value
In Funaria, paraphyces are found on
a) Gametophyte
c) Both (a) and (b)
b)
d)
Sporophyte
Protonema
Fill in the blanks:
6.
The classification of algae is mainly based on _______.
7.
Sexual reproduction is absent is _______.
8.
Trabeculae are made up of _______ and _______ materials.
9.
The bryophyte plant body is _______.
10.
Nostoc colonies are recorded inside the thallus of _______.
State True or False:
11.
Cryophytes are found on ice and snow.
12.
The life cycle of sargassum is haplontic.
13.
Gracilaria, known as jiangli in China.
14.
Elaters are present in liverworts and absent in mosses.
15.
In Marchantia, the gemmae are found on archagoniophores.
Answer in one or two sentences:
16.
What is parthenogenesis?
17.
What is a Coenobium?
18.
What are heterocysts?
19.
What are bryophytes?
20.
In which habitat is Anthoceros found?
SECTION – B
Answer all the questions:
21.
a.
5 x 4 = 20
Describe the general characteristics of algae.
OR
22.
b.
With the help of suitable diagrams, describe the cell structure of an eukaryotic algae.
a.
Describe the range of thallus organisation in algae.
OR
23.
b.
Give the salient features of alternation of generation.
a.
Write short notes on Nannandria.
OR
24.
b.
Narrate the life cycle of Caulerpa.
a.
Describe the vegetative reproduction in bryophytes.
OR
25.
b.
Elucidate the economic importance of Bryophytes.
a.
Describe the structure of archegoniophore of marchantia with the help of suitable
diagramme.
OR
b.
With the help of labelled diagrams only illustrate the life cycle of anthoceros.
SECTION – C
Answer any FOUR questions:
4 x 15 = 60
26.
Give a brief outline of Fritsch’s classification. Mention characteristic features and two
examples each of different classes studied by you.
27.
Discuss the economic importance of algae.
28.
Give an account of structure and reproduction of Sargassum.
29.
Outline the Rothmalar classification of bryphytes.
30.
Discuss the sexual reproduction of funaria.
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