BOT/V/CC/11 Student's Copy
2 0 1 8
CBCS
5th Semester
BOTANY
SIXTH PAPER
Algae, Lichens, Bryophytes
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 10
Tick the correct answer in the brackets provided 1×10=10
1. In Fristch's classification, algae are classified into
11 classes
12 classes
10 classes
14 classes
2. Reserve food 'laminarin' is found in
Xanthophyceae
Rhodophyceae
Phaeophyceae
Cyanophyceae
/143 1 Contd.
3. Motile and flagellated stages are found in
Chlorophyceae
Cyanophyceae
Rhodophyceae
None of the above
4. Antibiotic chlorellin is obtained from the member of
Phaeophyceae
Xanthophyceae
Bacillariophyceae
Chlorophyceae
5. Chief source of carrageenan, an alginic acid is
Chondrus crispus
Gloeopeltis furcata
Ulva lactuca
Chlorella pyrenoidosa
6. Lichen used in preparation of cosmetics is
Evernia prunastri
Paramellia saxatilis
Cetraria islandica
Letaria vulpina
7. Mode of nutrition of lichen is
saprophytic
parasitic
symbiotic
All of the above
8. Columella is absent in
Riccia
Anthoceros
Polytrichum
None of the above
BOT/V/CC/11/143 2 Contd.
9. Elaterophore is found in
Sphagnum
Polytrichum
Riccia
None of the above
10. Simplest type of sporophyte is found in
Sphagnum
Polytrichum
Pellia
Riccia
SECTION—B
Marks 15
Write notes on the following in brief 3×5=15
1. Trichome
OR
Akinetes
2. Aplanospore
OR
Hypnospore
3. Haplontic life cycle
OR
Diplontic life cycle
4. Pseudopodium
OR
Peristome
5. Gametophore
OR
Paraphysis
BOT/V/CC/11/143 3 Contd.
PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
1. Write a detailed note on pigmentation of algae. 10
OR
Describe the characteristic features of Chlorophyceae. 10
2. Discuss the economic importance of algae. 10
OR
What do you mean by alternation of generation? Describe the reproduction
in Rhodophyceae giving examples. 10
3. What is lichen? Give a brief description of the following types of lichens

Crustose
Foliose
OR
Describe briefly economic importance of lichens. 10
4. Describe major classes of Bryophytes with their characteristic features. 10
OR
With the help of labelled diagrams, compare the sporophytes of Riccia and
Pellia. 5+5=10
5. Write a brief account of origin of Bryophytes. 10
OR
Describe the evolution of sporophytes of Bryophytes with suitable diagrams
and examples. 10