1Medium10 marks
Explain the role of pancreatic enzymes in digestion.
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55 questions from the UPSC 2018 examination.
55 questions
Explain the role of pancreatic enzymes in digestion.
Explain HPA axis. Draw a transverse section of the Adrenal gland and describe the functions of its different hormones.
What are fossils ? Describe the process of fossil ionization and give two methods of determining the age of fossils.
What is Chi-square test ? Give a detailed account of the computation of Chi-square for tests of independence, homogeneity and goodness of fit using biological data.
Describe the role of visual pigments in daylight and night vision.
Describe the traditional methods of classification of animals.
Give an account of the morphological and histological types of placenta. Add a note on the physiological function of mammalian placenta.
Give an illustrated account of different types of mouth parts in insects and write a note on their functional significance.
What is ecological succession ? Give an account of the causes, types and general process of ecological succession in nature.
Write notes on the following in about 150 words each : Status of Sphenodon
What is eusocialism ? Describe this phenomenon with reference to Honey Bees.
Explain the distinctive features of plasmid and cosmid vectors used in recombinant DNA technology.
What is retrogressive metamorphosis ? Give an illustrated account of this phenomenon in Herdmania. Also write a note on its affinities.
Write notes on the following in about 150 words each : PCR
Give an illustrated account of the life cycle of Plasmodium vivax.
Describe the role of pituitary and gonadal hormones on puberty and regulation of menstrual cycle.
Describe the structure of the pathogen responsible for AIDS. How it is transmitted ? Also mention the pathogenesis and prevention of AIDS
With the help of labelled diagrams only, explain the structure and different stages of the life cycle of Obelia (no description is required). With reference to Obelia, also explain the polymorphism and the status of metagenesis.
Explain the phenomenon of X linked inheritance in Drosophila.
What are micro, macro and mega evations ? Explain the terms with suitable examples.
Describe the structure of plasma membrane according to the fluid mosaic model with emphasis on the role of lipid molecules in maintaining the fluidity of the membrane.
Give an account of the structure and life cycle of Wuchereria bancrofti. Add a note on the pathogenicity and control of the disease caused by this parasite.
Describe the role of fertilizin and anti-fertilizin interactions during fertilization.
Write notes on the following in about 150 words each : Ozone layer depletion
Write notes on the following in about 150 words each : General characters of Cetaceans and Primates
Write notes on the following in about 150 words each : Paedomorphosis
Describe different larval forms of Echinoderms and comment on their evolutionary significance.
Describe the role of Acetylcholine in neuromuscular transmission.
Write notes on the following in about 150 words each : Endemism with reference to India
Define Muscle twitch and explain the features of Summation and Tetanus.
Give an account of Migration in birds. Add a note on the problems faced by them during migration.
What are fate maps ? Describe the methods of fate maps construction with reference to frog or chick.
What are Euxosomes and Heterochromatin ? Explain the events of Heterochromatin formation.
Explain the origin and functions of lysosomes with emphasis on different enzymes.
Write notes on the following in about 150 words each : Prostostomes and Deuterostomes
With suitable examples, describe how adaptive radiation helps in the evolution of terrestrial and aquatic animal groups.
Give an account of sources, impacts and prevention of air pollution. Comment on Montreal and Kyoto protocol also.
Who proposed Binomial Nomenclature ? Describe the rules of Zoological Nomenclature.
What is biological rhythm ? Give an account of its types and characteristics. What is the role of different factors in their entrainment ?
Give an account of the impact of drugs on teratogenesis.
Write notes on the following in about 150 words each : Peripatus
Describe the role of protein kinases in the regulation of cell cycle. Add a note on the importance of check points.
Describe in detail about the respiratory chain or electron transport during oxidative phosphorylation in Mitochondria.
What is resolution of a microscope ? Comment on the principles of SEM and TEM. Describe the structure, working and applications of any one of the electron microscope in biology.
What is "Lac-culture" ? Explain the methodology employed in lac-culture. Also describe the uses of lac.
With particular reference to Gradient theory, describe how polarity is established during embryonic development. Comment on its significance.
Comment on the following human genetic disorders : (i) Down Syndrome (ii) Klinefelter's Syndrome (iii) Sickle Cell Anaemia
Define Isolation. Explain in detail the pre-mating and post-mating isolating mechanisms.
Write notes on the following in about 150 words each : Habituation and Conditioning
What is the systemic position of rice pest ? Give an account of its life cycle and the damage caused by this pest. Write a note on the measure for its prevention and control.
Explain in detail about the events involved in the transformation of spermatid into sperm. Comment on why you consider these changes as essential.
Describe in detail about the structure and function of Nephron and explain fluid balance regulation through Renin Angiotensin Aldosterone systems.
Explain the use of VNTRs in DNA fingerprinting in paternity tests.
Describe the role of Calcitonin, Parathormone and Vitamin $D_3$ in calcium metabolism.
Write notes on the following in about 150 words each : Population dynamics