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 : Nov 2010 : https://www.pdfquestion.in/uploads/alagappauniversity.ac.in/4016.-B.Sc.%20Botany%20%5BNon-CBCS%5D.pdf

Alagappa Thallophyta & Plant Pathology Question Paper

Section A

1. Which of the following is found in hot water springs-
2. Which of the following algae having cap cells-

Related : Alagappa University Nutritional Biochemistry B.Sc Model Question Papers : www.pdfquestion.in/3968.html

3. Spirulina is commonly known as
4. The study of fungi is called
5. The reserve food of Albugo is
6. Which of the following is fruticose lichen-
7. Citrus canker is a
8. The airpores of Marchantia are made up of
9. The pseudoelaters of Anthoceros are
10. Polytrichum is a
11. The study of algae is called as ………………………….
12. Oedogonium is a …………………………. water algae.
13. …………………………. algae is used as medicine.
14. A uredinium of puccinia can produce roughly
15. Ergot disease of rye is caused by ………………………….

16. Phycobiont is the …………………………. partner of lichen.
17. Usnic acid is present in …………………………. lichen.
18. Causal agent of Bunchy top of Banana is
19. Gametophytic generation is dominant in
20. Marchantia are found in …………………………. places.
21. Briefly explain general characters of algae.
22. Write the reproductive methods of Polysiphonia.
23. Explain the structure and reproductive methods of the Albugo.
24. Explain mycorrhiza and its role in agriculture.
25. Write short notes about economic importance of Lichens.
26. Write the causal agent, symptom and control measures of little leaf of Brinjal.
27. Briefly explain general characters of Bryophytes.
28. Briefly explain reproductive methods of Marchantia.
29a. Write an essay about life history of Volvox.
30a. Write the causual agent, symptoms, etiology and control measures of citrus canker. (Or)
(b) Give an account of the life history of Polytrichum.

PTERIDOPHYTA, GYMNOSPERMS AND PALAEO BOTANY :
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