Biology & Human Body PYQs

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1. Prelims 1997Q117Biology & Human Body

   The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands.

   Which one of the following endocrine glands can function independent of the pituitary gland?

   aThyroidbGonadscAdrenalsdParathyroid
2. Prelims 1997Q118Biology & Human Body

   Oxygen transportation in a human body takes place through

   I.Blood

   II.Lungs

   III.Tissue The correct sequence of transportation is

   aI, II, IIIbIII, I, IIcII, I, IIIdI, III, II
3. Prelims 1997Q119Biology & Human Body

   Corpus luteum is a mass of cells found in

   abrainbovarycpancreasdspleen
4. Prelims 1997Q121Biology & Human BodyAnswer disputed

   Alpha-keratin is a protein present in

   abloodbskincwooldeggs
5. Prelims 1997Q125Biology & Human Body

   Arteries supplying blood to the heart are called

   acarotid arteriesbhepatic arteriesccoronary arteriesdpulmonary arteries
6. Prelims 1997Q129Biology & Human Body

   Antigen is a substance which

   alowers body temperaturebdestroys harmful bacteriactriggers the immune systemdis used as an antidote to poison
7. Prelims 1996Q98Biology & Human Body

   Which one of the following is a modified stem?

   aCarrotbSweet potatocCoconutdPotato
8. Prelims 1996Q99Biology & Human Body

   Fat present below the skin surface in our body acts as a barrier against

   aloss of heat from the bodybloss of essential body fluidscloss of salts from the bodydentry of harmful micro-organisms from the environment
9. Prelims 1996Q101Biology & Human Body

   Which one of the following is NOT an essential micronutrient for plants?

   aBoronbZinccSodiumdCopper
10. Prelims 1996Q104Biology & Human Body

    Living organisms require at least 27 elements, of which 15 are metals. Among these, those required in major quantities include

    aPotassium, Manganese, Molybdenum & CalciumbPotassium, Molybdenum, Copper & CalciumcPotassium, Sodium, Magnesium & CalciumdSodium, Magnesium, Copper & Manganese
11. Prelims 1996Q105Biology & Human Body

    Match List I with List II and select the correct answer using the codes given below the lists:

    List I

    I.Vitamin

    II.Enzyme

    III.Hormone

    IV.Protein

    List II

    A.Pepsin

    B.Carotene

    C.Keratin

    D.Progesterone

    aI – A, II – B, III – C, IV – DbI – B, II – A, III – D, IV – CcI – B, II – A, III – C, IV – DdI – A, II – B, III – D, IV – C
12. Prelims 1996Q108Biology & Human Body

    It is possible to produce seedless tomato fruits by

    aapplying trace elements in tomato fieldsbspraying mineral solution on plantscspraying hormones on flowersdapplying fertilisers containing radioactive elements
13. Prelims 1996Q130Biology & Human Body

    Match List I (Physiological processes) with List II (Cell organelles) and select the correct answer by using the codes given below the lists:

    List I

    I.Photosynthesis

    II.Mineral uptake

    III.Respiration

    IV.Protein Synthesis

    List II

    A) Plasma membrane

    B) Chloroplast

    C) Mitochondria

    D) Ribosomes

    Codes:

    aI-A, II-B, III-C, IV-DbI-A, II-B, III-D, IV-CcI-B, II-A, III-C, IV-DdI-B, II-A, III-D, IV-C
14. Prelims 1995Q120Biology & Human Body

    A person with ‘AB’ blood group is sometimes called a universal recipient because of the

    alack of antigen in his bloodblack of antibodies in his bloodclack of both antigens and antibodies in his blooddpresence of antibodies in his blood
15. Prelims 1995Q121Biology & Human Body

    Which one of the following is a membrane that protects the developing embryo from desiccation?

    aAmnionbAllantoiscChoriondYolk sac
16. Prelims 1995Q123Biology & Human Body

    Most of the desert plants bloom during night time because

    atheir blooming is controlled by low temperaturebthey are sensitive to the phases of mooncthe desert insects eat away flowers during day timedthe desert insects are active during night time
17. Prelims 1995Q125Biology & Human Body

    Which of the following elements are present in all proteins?

    I.Carbon

    II.Hydrogen

    III.Oxygen

    IV.Nitrogen

    Select the correct answer from the codes given below:

    aI and IIbI, II and IVcI, III and IVdI, II, III and IV
18. Prelims 1995Q126Biology & Human Body

    Which one of the following hormones contains iodine?

    aThyroxinebTestosteronecInsulindAdrenaline