I23/1 I
2010
ZOOLOGY
Paper 1
Time: 3 Hours] Maximum Marks: 300

INSTRUCTIONS
Each question is printed both in English and in Kannada.
Answers must be written in the medium specified (English or Kannada) in the Admission Ticket issued to you, which must be stated clearly on the cover of the answer book in the space provided for this purpose. In case Df any doubt in the Kannada text, please refer to English text.
This paper has four parts:
A 20 marks
B 100 marks
C 90 marks
D 90 marks

Marks allotted to each question are indicated in each part.
All questions in Part Part B and Part C are compulsory.
Answer any three questions in Part D.
Illustrate wherever necessary.

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23/1 PART A 4x5=20
Answer each question in about 50 words. Each question carries 5 marks.
1. Write short answers for the following:
What is a living connecting link? Explain with any two examples.
Define Neoteny and Autotomy. Explain each with an example.
Describe health. the source and effect of Lead and Mercury on public
List out five aquatic adaptations of Cetacean.

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23/1 141
PAJlT B 10x10=100 Answer each question in about 100 words. Each question carries 10 marks.
2. Describe the types and formation of endoskeleton in sponges. Give the classification of the phylum based on endoskeleton with an example for each.
3. Describe the extra intestinal migration in Ascaris lumbricoides.
4.
Trace the structural and functional adaptations of digestive system of Hirudinea granulosa to its parasitic mode of life.

5.
List out general characters of phylum Echinodermata. Classify the phylum with an example for each class.

6.
Define progressive and retrogressive metamorphosis. Describe the two processes with reference to the tadpole larvae of ascidia and frog.

7.
Describe the different types of fins and their function in shark.

8.
Discuss the adaptati<:lU of animals to scansorial mode of living.

9.
What is biomass Describe the general pyramid of biomass in aquatic and terrestrial ecosystems.

10.
In a certain population 60 individuals have type fM'-blood, 101 individuals have type and 53 individuals have for a total population size of 214. Find out the genotype frequency and allelic frequency.


[Note A person with genotype MM-has type blood, NN-has type A heterozygote MN will have both and alleles which are co-dominant].
11. List out any five beneficial and five harmful effects of insects to man.
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{Turn over
PARTe 6x15=90 Answer each question in about 150 words. Each question carries 15 marks.
12.
What is conjugation? Explain the process of conjugation in Paramecium caudatum. Add a note on its significance.

13.
Define polymorphism. Explain the phenomenon with reference to the order Siphonophora. Mention the effect of this modification on the life history.

14.
Describe the structural and physiological modifications of birds to its aerial mode of life.

15.
Define portal system. Explain the portal systems of frog with a labelled diagram. Discuss the fate and significance of these systems In Anamniotes and Amniotes.

16.
Define Succession. Differentiate between primary and secondary succession. Explain the various stages in a Hydrosere.

17.
Describe the microscopic structure of the shell of Bivalves. Explain the process of pearl formation.




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PAJlT D
Answer any three of the following questions, each in about 300 words. Each question carries 30 marks.
18.
Describe the structure of ommatidium. Explain the mechanism of formation of apposition and superposition images.

19.
With the help of labelled diagrams discuss the role of temporal fossae in the classification of the class Reptilia.

20.
Describe nitrogen cycle under the following processes


Nitrogen fixation
Decay
Nitrification
Cd) Denitrification
AND

Mention the effects of human interference in the nitrogen cycle.
21.
Describe the hormonal factors regulating the migration in birds.

22.
Discuss the integument as a "Jack of all trades" in the animal world.


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I23/1 I
2010


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I23/2 I
2010
ZOOLOGY
Paper 2
Time.' 3 Hours] Maximum Marks: 300

INSTRUCTIONS
Each question is printed both in English and in Kannada.
Answers must be written in the medium specified (English or Kannada) in the Admission Ticket issued to you, which must be stated clearly on the cover Df the answer book in the space provided for this purpose. In case Df any doubt in the Kannada text, please refer to English text.
This paper has four parts:
A 20 marks
B 100 marks
C 90 marks
D 90 marks

Marks allotted to each question are indicated in each part.
All questions in Part Part B and Part C are compulsory.
Answer any three questions in Part D.
Illustrate wherever necessary.

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PART A
Answer each question in about 50 words. Each question carries 5 marks.
1. Write short answers for the following

What is cell cycle Mention the major cellular processes that characterize the cell cycle.


Mention the cause, symptoms and cure for pernicious anaemia.


Differentiate between Euphenics and Euthenics.


Explain the theory of Recapitulation with an illustration.


(3I 23/2

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Answer each question in about 100 words. Each question carries 10 marks.
2.
If a colour-blind man marries a normal vision woman, whose father was colour-blind, what is the probability of their first child being a boy? If the first child is a girl what would be the chances of being normal? Trace the probable and perfect genealogy or pedigree of the three generations.

3.
Describe the structure and function of t-RNA.

4.
With the help of a neat labelled diagram explain the ultramicroscopic structure of mitochondrion, Add a note on its function.

5.
Describe the zoogeographical uniqueness of Australian region.

6.
What is fate map? Describe morphogenetic movement in the development of frog.

7.
Define a Synapse. Describe the mechanism of synaptic transmission.


8. Describe the theory of urine concentration.
9.
Describe Best and Taylor's theory of blood clotting.

10.
Describe the main functional properties of enzymes.

11.
Describe the mechanism of balancing blood glucose level in man.


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[Turn over
PARTe 6x15=90 Answer each question in about 150 words. Each question carries 15 marks.
12. Explain the concept of Operon Model of gene regulation and protein synthesis in Escherichia coli.
13.
Describe the Muller's CIB method for the detection of induced mutation.

14.
What is Orthoselection Explain the phenomenon with reference to the evolution of horse.

15.
Describe the planes and types of cleavage pattern m animals with examples.

16.
Describe the transportation of carbon dioxide in man.

17.
Discuss the various anatomical evidences as a proof to organic evolution.


23/2

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[Turn over
PAJiT D 3x30=90 Answer any three of the following questions, each in about 300 words. Each question carries 30 marks.
18.
Explain the exocrine role of pancreas.

19.
Explain normal human karyotype. Discuss any two autosomal, two sex chromosomal and one biochemical genetic disorder in man.

20.
Describe the Sliding Filament Theory of muscle contraction in the light of ultramicroscopic structure and chemistry of skeletal muscle.

21.
Describe the hypothalamo.hypophysial-ovarian regulation of the menstrual cycle in women.


22. Explain the formation, structure and function of membranes of chick embryo.
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Note: The English version of the instructions is printed on the front cover of this question paper.