St joseph’s college (autonomous) tiruchirappalli – 620 002 semester examinations – november 2013




Дата канвертавання18.04.2016
Памер36.21 Kb.

CLASS: M.Sc. BOTANY 13N / 305

St. JOSEPH’S COLLEGE (AUTONOMOUS) TIRUCHIRAPPALLI – 620 002

SEMESTER EXAMINATIONS – NOVEMBER 2013

TIME: 3 Hrs. MAXIMUM MARKS: 100

SEM

SET

PAPER CODE

TITLE OF THE PAPER


I

2013

12PBO1101

PLANT DIVERSITY

SECTION – A

Answer all the questions: 20 x 1 = 20


Choose the correct answer:

1.

Which among the following is an epizoic alga?




a)

Sargassum

b)

Cephaleuros




c)

Ulva

d)

Zoochlorella

2.

Parasexuality in fungi was first observed in




a)

Aspergillus

b)

Penicillium




c)

Fusarium

d)

Coprinus

3.

Indefinite growth of sporophyte is a salient feature of this bryophyte.




a)

Marchantia

b)

Reboulia




c)

Anthoceros

d)

Funaria

4.

Which among the following is an unique characteristic of Equisetum.




a)

Presence of jointed stem

b)

presence of scale leaves




c)

presence of winged spores

d)

All of the above

5.

This order of Gymnosperm is commonly known as “seed ferns”.




a)

Cordaitales

b)

cycadeodales




c)

pentoxylales

d)

pteridospermales

Fill in the blanks:

6.

The type of life cycle seen in polysiphonia is ________.

7.

A type of sexual reproduction in fungi which involves the fusion of two naked motile gametes is known as ________.

8.

The air-gun mechanism of spore dispersal in seen in ________ genus of bryophyte.

9.

Telome concept in pteridophytes was first put forwarded by ________.

10.

________ is the genus of Gymnosperm which shows the presence of vessels in xylem.


State True or False:

11.

The commercial product agar-agar is obtained from the members of Red algae.

12.

Degeneration of sex in fungi has been reported in the class Ascomycetes.

13.

The class Hepaticopsida in bryophytes is commonly known as mosses.

14.

Ligules are present in the strobilus of Lycopodium.

15.

In manoxylic wood, the pith and cortex are much reduced with narrow medullary rays.


Match the following:

16.

Gracilaria

-

a) Conidiophore

17.

Penicillium

-

b) bract scale

18.

Funaria

-

c) Synangia

19.

Psilotum

-

d) Calyptra

20.

Pinus

-

e) Cystocarp



SECTION – B


Answer all the questions: 5 x 4 = 20

21.

a.

Give the outline of Fritsch’s classification of algae.



OR




b.

Give an account of mass culture of sea weeds.

22.

a.

Describe the somatic structures of fungi.



OR




b.

Give an account of classification of Lichens.

23.

a.

Mention the economic importance of bryophytes.



OR




b.

Describe the methods of vegetative reproduction in bryophytes.

24.

a.

Write an account of heterospory and seed habit.



OR




b.

Mention the different types of fossils.

25.

a.

Enlist the Xerophytic characteristics of Gymnosperms.



OR




b.

Explain the angiospermic features of Gnetum.



SECTION – C


Answer any FOUR questions: 4 x 15 = 60

26.

With neat labeled diagrams, explain the thallus variations in algae.

27.

Give Ainsworth’s classification of fungi and explain the salient features of each class.

28.

Describe the spore dispersal mechanisms in bryophytes.

29.

Explain the stelar evolution in pteridophytes.

30.

Describe the vegetative, anatomical and reproductive characteristics of coniferophyta.


**************


База данных защищена авторским правом ©shkola.of.by 2016
звярнуцца да адміністрацыі

    Галоўная старонка