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Indian Forest Service (Main): :
Examination, 2024
ZOOLOGY
Paper -I
Time Allowed : Three Hours
JBNV-U-ZOLY
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.
Neat sketches may be drawn, wherever required.
Answers must be written in ENGLISH only.
SECTION A
જા. Write a brief account on each of the following : 8x5=40
(a) Role of fins in fish locomotion 8
(b) Structure and mechanism of action of cnidoblasts 8
(c) General features of egg-laying mammals and pouched mammals 8
(d) Affinities of Balanoglossus 8
(e) Structure of internal ear in mammals 8
JBNV-U-ZOLY
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Q2. (a)
(b)
(c)
९३. (a)
(b)
(c)
९4. (৪)
(b)
(c)
Classify phylum Mollusca up to class level and mention characteristic
features of each class with relevant examples.
Draw a labelled transverse section of pancreas and comment on the role
of various pancreatic hormones.
Describe the structure and role of book-lungs in scorpions.
With the help of a labelled diagram, describe the life history of
Leishmania.
Discuss the concept of metamerism in annelids with relevant examples.
Explain the functions of mammalian integument.
Describe the structural peculiarities of larval forms in Echinoderms.
Give an account of the various skeletal structures in sponges.
“Birds are called glorified reptiles.” Comment.
JBNV-U-ZOLY 2
15
15
10
15
15
10
15
15
10
SECTION B
Q5. Write a brief account on each of the following : 8x5=40
(a) 18௦1௦ of mosquitoes as vectors of human diseases 8
(2) Pearl culture in freshwater 8
(૦) Principle and applications of spectrophotometry 8
(0) Acid rain and its impact on biosphere 8
(e) Habituation behaviour in animals 8
౧. (a) Give an account of gastro-intestinal nematodes of cattle and briefly
discuss their pathogenicity. 15
(b) Explain various measures implemented by the government to manage
vehicular pollution in India. 15
(c) Discuss different sign stimuli used by animals and comment on their
adaptive significance. 10
౧7. (a) Describe the principle, working and applications of Scanning Electron
Microscopy. 15
(2) What is meant by communicable diseases ? Describe the pathogenicity,
clinical manifestation and prevention of cholera. 15
(૦) | What is meant by global warming ? How is it impacting the environment
in the context of greenhouse gases ? 10
Q8. (a) List various population characteristics. Explain J-shaped and S-shaped
growth forms with suitable examples. 15
(2) Giving suitable examples, explain the concept of homing in animals. 15
(c) Explain null hypothesis and its application in Biology. 10
JBNV-U-ZOLY 3
कर
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