UPSC IFS 2017 Question Paper for Zoology Paper-I

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1017
. FSI-P-ZOLY

ZOOLOGY

Paper - I

Time Allowed: Three Hours Maximum Marks : 200

Question Paper Specific Instructions

Please read each of the following instructions carefully before attempting
questions:
There are EIGHT questions in all, out of which FIVE are to be attempted.
Questions no. 1 and 5 are compulsory. Out of the remaining SIX questions, THREE are to
be attempted selecting at least ONE question from each of the two Sections A and B.
Attempts of questions shall be counted in sequential order. Unless struck off attempt of a
question shall be counted even if attempted partly. Any page or portion of the page left
blank in the Question-cum-Answer Booklet must be clearly struck off
All questions carry equal marks. The number of marks carried by a question/part is
indicated against it.
Answers must be written in ENGLISH only.
Neat sketches may be drawn, wherever required.

SECTION A

Ql. Write a brief account of the following: 8x5=40

Phenomenon of polymorphism with reference to Coelenterates 8

Functional morphology of pancreas in mammals 8

Catadromous migration among fishes 8

Structure of scolex in Taenia solium 8

Types of feathers in birds 8

FSI-P-ZOLY 1

Q2. What is Retrogressive Metamorphosis ? Discuss briefly with reference to
life history of Ascidians 10

Compare the functional anatomy of the brain in Calotes, Columba and
Otyctolagus. 15

Write an essay on dentition in mammals 15

Q3. What is Torsion ? Describe the significance of torsion and detorsion in
Gastropods. 10

Write an essay on modes of reproduction in Protozoa. 15

Describe the larval forms in Echinodermata. Add a note on their
evolutionary significance. 15

Q4. Describe the biting and chewing, siphoning and piercing and sucking
mouth parts in insects with suitable examples. 15

Describe in detail, the life cycle and pathogenicity of Leishmania
donovani. 15

Write an account of the canal system in sponges. 10

FSI-P-ZOLY 2

SECTION B

Q5. Differentiate between the following: 8x5=40

Bioremediation and Biomagnification 8

Correlation and Regression 8

Biological Clock and Biological Rhythm 8

SEM and TEM 8

Infectious and Communicable Diseases 8

Q6. "A population is a self-regulating system." Justify. 15

What is Learning Behaviour ? Explain the terms Imprinting,
Conditional behaviour and Habituation with suitable examples. 15

Write an essay on Pearl culture in India. Is it an investment avenue?
Comment. 10

Q7. What is Pollution ? Describe water pollution, its sources and effect on
human health. 15

What is the causative agent of Tuberculosis ? Describe the
characteristics, pathogenicity and public health significance. 15

What are Natural Resources ? Mention any two and discuss the
conservation strategies undertaken. 10

Q8. What are Mean, Median and Mode ? Explain the relationship between
these three measures of central tendency. 15

What is Scintillation Counting? Explain the principle and its use in
biology. 15

What are the possible consequences of ozone layer depletion? 10

FS!-P-ZOLY 3

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