I23/1 I
2008
ZOOLOGY
Paper 1
Flllle a Hours] L AfaximwfI A!arhs SOO

INSTRUCTIONS
Candidates should attempt all the questions in Parts B Howcuf'r, thr.v huue to rhoose three questions in Part D. C
Answer8 must Ka Ii nuda!. be written w the medium opted (i.e. English or
This paper has four parts
A B C D 20 marks 100 marks 90 marks 90 marks Alarl:s allotted to each question arc wdlcatecllfl each part.


23/1 (2I
PART A An8wer each quc8tion in about 50 words. Each qucstion carries 5 marks.
1. \Trite short answer.s for the following:
Explain five salient features of Porifera.
\That are the ecological pyramids
vVhat are the hormones important to behaviour regulation
(dl What are the types of silk? Nanw the insect secreting the silk.

23 1 PARTE lOx 1(10100
A1I81fcr each question in about 100 words. Each question carries 10 lIlorlr.s
I!!ustratc u'hcrcl.Lr necessary.
2. Explain briefly the schizogony part of life cycle of Plasmodium.
:J. With the llC'lp of a diagram, explain Phosphorus cycle.
,1. Briefly explain the biology of the causative organism of Filariasis.
:i. Vhat are the aduptatiolls required for a life in desert?
Explain the .structure, types and functions of air bladder in fishes.

7. Comment on JlLll1otrenuHa, give QX:1mples and add a note on thl.'ir <1fIinities.
Fish A and B stocked in a pond. Species numbering 400, consume::; kg food per numbering 1000 consumes 10 kg/day. is the averagL' food consumption of fish in the pond?
Vhat are thf' iw,c·d pests of stored grains and do we control thl'm
10. What are tlw inter-specific relations or interactions between species
I. Explain the of any two insect pests vC'terinary importanCl' and their control
23,1 41 PART C Iix15=90
Answer each question in about 150 words. Each question carries
15 marks. illustrate wherever necessar)'.

12.
Explain the morphological and physiological adaptations of helminth parasites.

13.
What are the properties of population group?

14.
Comment on the salient features of Apoda and their affinities.

15.
Why is temperature considered as a limiting factor?

16.
Explain the hormonal regulation of metamorphosis in insects.

17.
What are the basic factors to be considered III the selection of species for fish culture?


151 23 1 PAHTD
A.nswer any three of the following questIOns, each in about 300 u'ords. Fach question carries 30
IH. Descnbe the structure and mechanism of locomotory organelles in
PrO(UL.Ud.
U). Vrite an essay on flightless birds.
20.
Describt> the sourt:(Js of water pollution, effects on organIsms and preventlVe measures to reduce it.

21.
Vhat is the nature of biological rhythnlS, types of rhythms, tidal rhythms, lunar rhythms and circadian rhythms?

22.
Describe the technique of induced breeding lhypophysationi In fish



23/2
11
2008

ZOOLOGY
Paper 2


TI file: .1 /lours I Maximum MarIn, 300
INSTRUCTIONS
Candidates should attempt all the questions Ul Pm·ts B C. Hou.;et}cr, they have to choose only three questions in Part D.
Ansu:crs must be written ill the medium opted (i.e. En{Jlish or Kannadu).
This paper hus four parts:
A 20
B 100 marks
C 90 mdks
D 90 marks

J/nds allottc(! to each questIOn are indicated III each part.


23/2
PART A 4x5=20
Answer each question in about 50 words. Each question carries 5 marks.

1. Write short answers for the following:

What kind of bond connects adjacent nucleotides In the same strand?


If the parents have AO x AB genotype of blood, what would be the genotype of offsprings and blood group of offsprings


Give an example for each of mono, di and polysaccharides and structure of glucose.


What are the planes of cleavage?



I 23/2
PARTB

each question in about 100 words. Each question carries 10 marks. Illustrate your ansuwrs.
2.
.That are fossils'? Mention their types and formation.

3.
Explain geographic and climatic isolation. Give examples.

4.
Briefly explain the molecular organization and functional role of the mitotic apparatus.

5.
is the genetics and cell biology behind Down's Syndrome?

6.
iVhat IS a fate map? How is it constructed and what is the advantage Draw fate map of Amphibian.

7.
What is meant by degeneracy of genetic code?

8.
Vhat are the examples of aromatic amino acids Vrite the structure of anyone. Mention the properties of amino acids.

9.
Explain briefly structure and function of hearing receptor II1 mammals.

10.
What are the changes 111 the metabolism of fertilized egg as a consequence of fertilization?

11.
lIow do T cells and B cells learn to distinguish self from non-self su as to avoid attacking other cells of the host organism?


[i:..vn OVrr
23'2
Answer each question in about 150 lvords. Each question carnes 15 marks. Illustrate your anS[Ders.

12.
Describe the ultra-structure and chemical composition of ribosomes.

13.
What is crossing over, its cytological basis and significance?

14.
Explain types of mimicry.

15.
Vhat are the types of placenta found in mammals?

16.
\That are the factors which affect enzyme activity?

17.
Give an account of insect pheromones.


(5I 2" o Lc PARI'D
thre(> rI the questirills, each III about H'orc!.s. fueh CjUl'sliol! curnes ,so
18. Ikscribc the molecular mc'clwnism of replication of 111 bactni;'l. Yh<.11 aTe cxtra-cmbryonil' and do they form ill chick
I)('scribe the two types of Euploidy, the autopolyploid.'" and allopulypll,Hl)' [mel their signific:lIlC'('.
22. UU2cribl' thp .'1)'lltLosis and functions or hormones from and