Biology & Human Body PYQs

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1. Prelims 2009Q69Biology & Human Body

   In the context of genetic disorders, consider the following:

   A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct ?

   aBoth children suffer from colour blindnessbDaughter suffers from colour blindness while son does not suffer from itcBoth children do not suffer from colour blindnessdSon suffers from colour blindness while daughter does not suffer from it
2. Prelims 2009Q73Biology & Human Body

   Consider the following :

   1.Camphor

   2.Chicory

   3.Vanilla

   Which of the above is/are plant product(s) ?

   a1 and 2 onlyb3 onlyc1 and 3 onlyd1, 2 and 3
3. Prelims 2009Q139Biology & Human Body

   In making the saffron spice, which one of the following parts of the plant is used ?

   aLeafbPetalcSepaldStigma
4. Prelims 2009Q149Biology & Human Body

   With reference to the evolution of living organisms, which one of the following sequences is correct?

   aOctopus – Dolphin – SharkbPangolin – Tortoise – HawkcSalamander – Python – KangaroodFrog – Crab – Prawn
5. Prelims 2008Q28Biology & Human Body

   In which one of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?

   aDragonflybHoneybeecSpiderdPit viper
6. Prelims 2008Q30Biology & Human Body

   Which one of the following is an insectivorous plant?

   aPassion flower plantbPitcher plantcNight queendFlame of the forest
7. Prelims 2008Q36Biology & Human Body

   What is the pH level of blood of a normal person?

   a4·5 – 4·6b6·45 – 6·55c7·35 – 7·45d8·25 – 8·35
8. Prelims 2008Q132Biology & Human Body

   Assertion (A): In human body, liver has an important role in fat digestion.

   Reason (R): Liver produces two important fat-digesting enzymes.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
9. Prelims 2007Q15Biology & Human Body

   Which one of the following is the correct sequence in order of decreasing length of the three structural parts given below of small intestine in the human body?

   aJejunum – Duodenum – IleumbIleum – Duodenum – JejunumcJejunum – Ileum – DuodenumdIleum – Jejunum – Duodenum
10. Prelims 2007Q17Biology & Human Body

    In the human body which one of the following hormones regulates blood calcium and phosphate?

    aGlucagonbGrowth hormonecParathyroid hormonedThyroxin
11. Prelims 2007Q18Biology & Human Body

    How do most insects respire?

    aThrough skinbThrough gillscBy lungsdBy tracheal system
12. Prelims 2007Q19Biology & Human Body

    In human beings, normally in which one of the following parts does the sperm fertilize the ovum?

    aCervixbFallopian TubecLower Part of UterusdUpper Part of Uterus
13. Prelims 2007Q20Biology & Human Body

    Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

    aCerebellumbCerebrumcMedulla oblongatadPons
14. Prelims 2007Q21Biology & Human Body

    Production of which one of the following is a function of the liver?

    aLipasebUreacMucusdHydrochloric acid
15. Prelims 2007Q24Biology & Human Body

    Which of the following is not a digestive enzyme in the human system?

    aTrypsinbGastrincPtyalindPepsin
16. Prelims 2007Q25Biology & Human Body

    Which of the following types of light are strongly absorbed by plants?

    aViolet and OrangebBlue and RedcIndigo and YellowdYellow and Violet
17. Prelims 2007Q35Biology & Human Body

    In the human body, to which structure is the appendix attached?

    aThe large intestinebThe small intestinecThe gall-bladderdThe stomach
18. Prelims 2007Q145Biology & Human Body

    Which one of the following parts of the pitcher plant becomes modified into a pitcher?

    aStembLeafcStipuledPetiole
19. Prelims 2006Q14Biology & Human Body

    What is the name of the vessel that delivers the nutrient-rich blood from the stomach and small intestine to the liver?

    aLeft hepatic arterybHepatic veincRight hepatic arterydHepatic portal vein
20. Prelims 2006Q15Biology & Human Body

    Consider the following statements with reference to the human body:

    1.The common bile duct releases its contents into the stomach.

    2.The pancreatic duct releases its contents into the duodenum.

    Which of the statements given above is/are correct?

    a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
21. Prelims 2005Q85Biology & Human Body

    Assertion (A): All the proteins in our food are digested in small intestine only.

    Reason (R): The protein-digesting enzymes from pancreas are released into small intestine.

    aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
22. Prelims 2005Q86Biology & Human Body

    Assertion (A): Amoeba reproduces by fission.

    Reason (R): All unicellular organisms reproduce by asexual methods.

    aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
23. Prelims 2004Q11Biology & Human Body

    The hormone insulin is a

    aGlycolipidbFatty acidcPeptidedSterol
24. Prelims 2004Q13Biology & Human Body

    In which organ of the human body are the lymphocyte cells formed?

    aLiverbLong bonecPancreasdSpleen
25. Prelims 2003Q7Biology & Human Body

    With reference to the work of human kidney, consider the following statements:

    1.After the waste is removed in the kidney, the cleaner blood is sent back through renal artery.

    2.From Bowman’s capsule, the filtered liquid passes through tiny tubes where much of the glucose is reabsorbed and sent back to the blood in the renal vein.

    Which of these statements is/are correct?

    aOnly 1bOnly 2cBoth 1 and 2dNeither 1 nor 2
26. Prelims 2003Q91Biology & Human Body

    Octopus is

    aan arthropodban echinodermca hemichordateda mollusc
27. Prelims 2003Q99Biology & Human Body

    Consider the following statements:

    1.The common blue green algae Spirogyra and Ulothrix are found in both fresh water ponds and oceans.

    2.The chameleon can look ahead with one eye, and at the same time look behind with another.

    Which of these statements is/are correct?

    aOnly 1bOnly 2cBoth 1 and 2dNeither 1 nor 2
28. Prelims 2003Q129Biology & Human Body

    With reference to normal human beings, consider the following statements:

    1.In response to the presence of HCl, secretin is produced from the duodenum

    2.Enterogastrone is produced in the small intestine in response to the presence of fatty acids

    Which of these statements is/are correct?

    aOnly 1bOnly 2cBoth 1 and 2dNeither 1 nor 2
29. Prelims 2002Q11Biology & Human Body

    Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?

    aIsolationbMutationcNatural SelectiondSexual Reproduction
30. Prelims 2002Q25Biology & Human Body

    Ticks and mites are actually

    aArachnidsbCrustaceanscInsectsdMyriapods