: UPSC: IAS MAIN - Sample Paper (
Allowed: Three Hours Maximum Marks: 300
should attempt all questions strictly in accordance with the instructions given
under each questions. The number of marks carried by each question is indicated
at the end of the question.
Write concise account of any three of the following in about 200 words each:
Various types of symmetry found in animal kingdom, with suitable examples.
Comparison of alimentary canal of frog and rabbit
Torsion in gastropoda
Structure and function of thyroid gland along with its regulation.
Explain the status of Protista and parazoa giving their characteristics with
suitable example. 60
the metamorphosis in insects and its hormonal regulation.
Draw well labeled diagram of transverse section of mammalian testis and ovary.
Describe the function of
and female sex hormones (Testosterone and estrogen)
brief account of any three of the following in about 200 words each: 20x3=60
What is ecological succession? Describe its process in a pod or lake.
Concept of imprinting
Malaria: its vector, pathogen and prevention
Chi-Square and its importance
pollution? Describe water pollution, its sources and prevention. 60
What is sericulture? Describe the tools and materials required for it. Mention
different types of silk moth and varieties of silk common in India. 60
is mean, median and mode? Explain the relationship between these three measures
of central tendency. 30
what is electron microscopy? Mention different types of electron microscopes and
their use in biology.
between any three of the following: -
Coincidence and interference
Mitotic and Meiotic Prophase
Substantive and polymorphic variation
Genera and Species
transcription in pro- and eukaryotes.
explanatory notes on the following: - 30x2=60
Mobile Genetic Segment
Hardy-Weinberg Law and mention its utility.
the importance of any three of the following: - 20x3=60
Structure and function of cyclic AMP
Mechanism of Hormone action
Discuss active and passive immunity. Mention autoimmune disorders.
Describe programmed cell death. 60
Discuss the role of liver and pancreas in digestion?