Thallophyta, Bryophyta And Plant Pathology B.Sc Model Question Papers : alagappauniversity.ac.in
Name of the University : Alagappa University
Degree : B.Sc
Department : Botany
Subject Code/Name : Thallophyta, Bryophyta And Plant Pathology
Semester : I
Document Type : Model Question Papers
Website : alagappauniversity.ac.in
Download Model/Sample Question Paper : APRIL 2011 : https://www.pdfquestion.in/uploads/alagappauniversity.ac.in/3964-B.Sc.%20Botany.pdf
Thallophyta, Bryophyta & Plant Pathology :
Time : 3 Hours
Maximum : 100 Marks
Section A :
Related : Alagappa University Plant Biodiversity-I B.Sc Model Question Papers : www.pdfquestion.in/3977.html
Section A : (20 × 1 = 20)
Answer all questions.
Choose the correct answer
1. The stored food in cyanophyceae is
a) Starch
b) Glucose
c) Glycogen
d) Cellulose
2. Volvox are found in
a) Fresh Water Ponds
b) Rivers
c) Hot Water Springs
d) None of the above
3 AFN-1484
3. Which of the following algae fixes the nitrogen
a) Anabaena
b) Volvox
c) Chara
d) None of the above
4. The life history of Puccinia was described for the first
time by
a) Blakeslee
b) K.C. Mehta
c) DeBarg
d) Webster
4 AFN-1484
5. The cell wall in Basidiomycotina is generally made up of
a) Chitin-Mannan
b) Cellulose Chitin
c) Chitin-Chitosan
d) Mannan-Glucan
6. Which of the following lichen having usnic acid ?
a) Usnea
b) Parmelia
c) Xanthoria
d) None of the above
7. Tikka disease is a
a) Viral Disease
b) Bacterial Disease
c) Fungal Disease
d) None of the above
8. Gemma Cups are found in
a) Marchantia
b) Lunularia
c) None of the above
d) Both of these
9. Stomata are present in Anthoceros on the following
a) Upper surface of the Thallus
b) Outer face of Involucre
c) Outer face of Capsule wall
d) On all these places.
10. Marchantia is a bryophyte because it lacks
a) Roots
b) Sporophyte
c) Seeds
d) Vascular Tissue
Fill in the Blanks :
11. The reserve food in vaucheria is ……………………………..
12. The sargasso sea is a part of ……………………………..
13. Spirulina is commonly known as ……………………………..
14. White rust of crucifers seen in ……………………………..
15. Black rust of wheat is caused by ……………………………..
16. Mycobiont is the …………………………….. partner of lichen.
17. Mycoplasma causes ……………………………..
18. Each cell of anthoceros thallus has …………………………….. choroplasts
19. The pseudoelators of Anthoceros are having …………………………….. celled.
20. Polytrichum is a ……………………………..
Section B : (5 × 8 = 40)
Answer any five questions.
Answer should not exceed 400 words
21. Briefly explain algae as pollution indicators.
22. Write the reproductive methods of Oscillatoria.
23. Write the general characters of fungi.
24. Briefly explain reproductive methods of Fusarium.
25. Brifely explain economic importance of Fungi.
26. Explain in detail about reproductive methods of Lichen.
27. Write the causal agent, symptom and control measures of Bunchy top of Banana.
28. Briefly explain general characters of Bryophytes.
Section C : (2 × 20 = 40)
Answer all questions.
Answer should not exceed 1000 words each Draw diagrams wherever necessary
29. (a) Give an account of the life history of polysiphonia. (Or)
(b) Describe in detail about life history of Puccinia.
30. (a) Write the causal agent, symptom, etiology and control measures of citrus canker. (Or)
(b) Give an account of the life history of Polytrichum.
B.Sc. Degree Examination, April 2011 :
Pteridophytes, Gymnosperms And Palaeobotany :
(Non-CBCS—2004 onwards)
Time : 3 Hours
Maximum : 100 Marks
Draw diagrams wherever necessary
Section A : (20 × 1 = 20)
Answer all questions.
Choose the correct answer
1. Stelar theory was proposed by
a) Van Tiegham and Douliot
b) Jeffery
c) Mohan
d) Richard
2. Heterospory and seed habit
a) Rhynia
b) Psilotum
c) Selaginella
d) Lycopodium
3. The sporangium in psilotum is a
a) Microsporangium
b) Megasporangium
c) Synangium
d) Leptosporangium
4. The giant species of Equisetum among the following is
a) E.Giganteum
b) E.debile
c) E.Palustre
d) None of the above
5. Winged pollen grains are found in
a) Adiantum
b) Cycas
c) Pinus
d) Psilotum
6. “Spur Shoot” is commonly found in
a) Gnetum
b) Pinus
c) Williamsonia
d) None of the above
7. The fossil belongs to the pteridophyte is
a) Pentoxylon
b) Williamsonia
c) Rhynia
d) Cycas
8. In coalification process all elements are replaced by
a) Nitrogen
b) Carbon
c) Silica
d) Calcium
9. Rock like fossil is called
a) Carbonisation
b) Petrification
c) Minor Fossil
d) Coalification
10. Which is the method of fossilization ?
a) Petrification
b) Fermentation
c) Nitrification
d) All the above
Fill in the blanks :
11. Pteridophytes are popularly called as ……………………………..
12. The colourless downwardly growing structures produced from the stem of selaginella are called ……………………………..
13. Equisetum commonly called as ……………………………..
14. Marsilea belongs to the order ……………………………..
15. The ovule of pinus is ……………………………..
16. The occurrence of polyembryony in Gnetum is due to ……………………………..
17. Palaeobatony is a branch of botany which deals with the study of ……………………………..
18. The theory related to fossilization is ……………………………..
19. Preserved remains of living organisms from the remote part of past is called ……………………………..
20. …………………………….. is one of the species of Rhynia found commonly.
Section B : (5 × 8 = 40)
Answer any five questions. Answer should not exceed 400 words each
21. Describe the general characters of pteridophytes.
22. Briefly explain heterospory and seed habit in Pteridophyte.
23. Write the life history of Adiantum.
24. Write the systematic position and external features of Equisetum.
25. Briefly explain economic importance of Gymnosperms.
26. How do you determine the age of a fossil by radiocarbondating method?
27. Explain the characteristic features of Lepidodendron.
28. Explain about Williamsonia.
Section C : (2 × 20 = 40)
Answer all questions. Answer should not exceed 1000 words
29. (a) Write an essay about classification of Pteridophytes by K.R. Sporna. (Or)
(b) Write an essay about life history of Marsilea.
30. (a) Give an account of life history of Gnetum. (Or)
(b) Briefly explain the following
(i) Geological time scale
(ii) Rhynia