AIPMT Online Test Series – Biology

Mitali Panda 5:34 am

Jan 22 • Medical Sample Papers • 6494 Views • 16 Comments on AIPMT Online Test Series – Biology

CBSE(Central Board of Secondary Education) organize AIPMT(All India Pre-Medical Test) every year as a College Entrance Exam for all those students who wants to take admission to MBBS and BDS courses in various medical colleges in India.The main aim to conduct this exam is to enable impartial available of medical education to all regions in India.It was one of the few competitive exam that was merit based and without any reservation.However in 2006,under pressure,reservation was  undertaken for SC,ST & OBC.There are two level of exam-Level 1(Preliminary test)-contains 200 questions(previously) which is entirely based on NCERT books specially biology and it takes place in the month of April.Level-2(mains)-Organized in the month of May which is most awaited level of exam.In this level a candidate’s knowledge is tested on following subjects as well physics(25%),chem(25%),Bio(50%).

From 2010,exam pattern has been changed i.e., it is completely made objective type and both the preliminary and mains exam contains 120 questions and duration for both the level is 3 hours.For each correct ans 4 marks will be awarded whereas 1 mark will be deducted for every wrong ans marked.

     So the important section is Biology on which students need to focus as maximum questions are asked from this.So here is the set of questions on Biology that I have prepared so as to help the students to crack AIPMT and realise their dreams.


1. The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is:
1) Glandular
2) Ciliated
3) Squamous
4) Cuboidal

2. Manganese is required in:
1) Plant cell wall formation
2) Photolysis of water during photosynthesis
3) Chlorophyll synthesis
4) Nucleic acid synthesis

3. Polyethylene glycol method is used for:
1) Biodiesel production
2) Seedless fruit production
3) Energy production from sewage
4) Gene transfer without a vector

4. The floral formula is that of:
1) Soybean
2) Sunnhemp
3) Tobacco
4) Tulip

5. Which one of the following groups of animals is bilaterally symmetrical and triploblastic ?
1) Aschelminthes (round worms)
2) Ctenophores
3) Sponges
4) Coelenterates (Cnidarians)

6. Which one of the following is commonly used in transfer of foreign DNA into crop plants ?
1) Meloidogyne incognita
2) Agrobacterium tumefaciens
3) Penicillium expansum
4) Trichoderma harzianum

7. Which one of the following is the correct matching of the events occurring during menstrual cycle ?
(1) Proliferative phase Rapid regeneration of myometrium and maturation of Graafian follicle.
(2) Development of corpus luteum Secretory phase and increased secretion of progesterone.
(3) Menstruation breakdown of myometrium and ovum not fertilised.
(4) Ovulation LH and FSH attain peak level and sharp fall in the secretion of progesterone.

1) 1
2) 2
3) 3
4) 4

8. Which one is the wrong pairing for the disease and its causal organism ?
(1) Black rust of wheat Puccinia graminis
(2) Loose smut of wheat Ustilago nuda
(3) Root-knot of vegetables Meloidogyne sp
(4) Late blight of potato Alternaria solani

1) 1
2) 2
3) 3
4) 4

9. Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by:
1) The Montreal Protocol
2) The Koyoto Protocol
3) The Vienna Convention
4) Rio de Janeiro Conference

10. What is true about Bt toxin ?
1) Bt protein exists as active toxin in the Bacillus.
2) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent its multiplication.
3) The concerned Bacillus has antitoxins.
4) The inactive protoxin gets converted into active form in the insect gut.

11. Peripatus is a connecting link between:
1) Mollusca and Echinodermata
2) Annelida and Arthropoda
3) Coelenterata and Porifera
4) Ctenophora and Platyhelminthis

12. T.O. Diener discovered a:
1) Free infectious DNA
2) Infectious protein
3) Bacteriophage
4) Free infectious RNA

13. Seminal plasma in humans is rich in:
1) fructose and calcium but has no enzymes
2) glucose and certain enzymes but has no calcium
3) fructose and certain enzymes but poor in calcium
4) fructose, calcium and certain enzymes

14. A fruit developed from hypanthodium inflorescence is called:
1) Sorosis
2) Syconus
3) Caryopsis
4) Hesperidium

15. The cell junctions called tight, adhering and gap junctions are found in:
1) Connective tissue
2) Epithelial tissue
3) Neural tissue
4) Muscular tissue

16. What will happen if the stretch receptors of the urinary bladder wall are totally removed ?
1) Micturition will continue
2) Urine will continue to collect normally in the bladder
3) There will be no micturition
4) Urine will not collect in the bladder

17. If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is:
1) coelomic fluid
2) Haemolymph
3) slimy mucus
4) excretory fluid

18. The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having:
1) overdominance of this type on the genes for A and B types
2) one antibody only – either anti-A or anti-B on the RBCs
3) no antigens A and B on RBCs
4) other antigens besides A and B on RBCs

19. One of the synthetic auxin is:
1) IAA
2) GA
3) IBA
4) NAA

20. A person likely to develop tetanus is immunised by administering:
1) Preformed antibodies
2) Wide spectrum antibiotics
3) Weakened germs
4) Dead germs

21. Alzheimer disease in humans is associated with the deficiency of:
1) glutamic acid
2) Acetylcholine
3) gamma aminobutyric acid (GABA)
4) Dopamine

22. Biochemical Oxygen Demand (BOD) in a river water:
1) has no relationship with concentration of oxygen in the water.
2) gives a measure of salmonella in the water.
3) increases when sewage gets mixed with river water.
4) remains unchanged when algal bloom occurs.

23. Compared to blood our lymph has:
1) plasma without proteins
2) more WBCs and no RBCs
3) more RBCs and less WBCs
4) no plasma

24. The genetic defect – adenosine deaminase (ADA) deficiency may be cured permanently by:
1) administering adenosine deaminase activators.
2) introducing bone marrow cells producing ADA into cells at early embryonic stages.
3) enzyme replacement therapy.
4) periodic infusion of genetically engineered lymphocytes having functional ADA cDNA.

25. Sickle cell anemia is:
1) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin
2) caused by a change in a single base pair of DNA
3) characterized by elongated sickle like RBCs with a nucleus
4) an autosomal linked dominant trait

26. Which of the following plant species you would select for the production of bioethanol ?
1) Zea mays
2) Pongamia
3) Jatropha
4) Brassica

27. When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from:
1) Rickets
2) Kwashiorkor
3) Pellagra
4) Marasmus

28. A young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to ?
1) Bile pigments passed through bile juice
2) Undigested milk protein casein
3) Pancreatic juice poured into duodenum
4) Intestinal juice

29. Which one of the following has maximum genetic diversity in India?
1) Mango
2) Wheat
3) Tea
4) Teak

30. Oxygenic photosynthesis occurs in:
1) Oscillatoria
2) Rhodospirillum
3) Chlorobium
4) Chromatium

31. There is no DNA in:
1) Mature RBCs
2) A mature spermatozoan
3) Hair root
4) An enucleated ovum

32. Given below is a schematic break-up of the phases / stages of cell cycle:

Which one of the following is the correct indication of the stage/phase in the cell cycle ?
1) C-Karyokinesis
2) D-Synthetic phase
3) A-Cytokinesis
4) B-Metaphase

33. Tiger is not a resident in which one of the following national park ?
1) Sunderbans
2) Gir
3) Jim Corbett
4) Ranthambhor

34. Which one of the following statements is true regarding digestion and absorption of food in humans ?
1) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+.
2) Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
3) About 60% of starch is hydrolysed by salivary amylase in our mouth.
4) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

35. Synapsis occurs between:
1) mRNA and ribosomes
2) spindle fibres and centromere
3) two homologous chromosomes
4) a male and a female gamete

36. Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D.

(1) vas deferens seminal vesicle prostate bulbourethral gland
(2) vas deferens seminal vesicle bulbourethral gland prostate
(3) ureter seminal vesicle prostate bulbourethral gland
(4) ureter prostate seminal vesicle bulbourethral gland

1) 1
2) 2
3) 3
4) 4

37. What is not true for genetic code?
1) It is nearly universal
2) It is degenerate
3) It is unambiguous
4) A codon in mRNA is read in a non-contiguous fashion

38. Which one of the following plants is monoecious?
1) Pinus
2) Cycas
3) Papaya
4) Marchantia

39. Cyclic photophosphorylation results in the formation of
1) ATP and NADPH
2) ATP, NADPH and O2
3) ATP

40. The letter T in T-lymphocyte refers to:
1) Thalamus
2) Tonsil
3) Thymus
4) Thyroid

41. Foetal ejection reflex in human female is induced by:
1) release of oxytocin from pituitary
2) fully developed foetus and placenta
3) differentiation of mammary glands
4) pressure exerted by amniotic fluid

42. Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
1) Absence of secondary phloem
2) Presence of cortex
3) Position of protoxylem
4) Absence of secondary xylem

43. Plasmodesmata are :
1) Locomotary structures
2) Membranes connecting the nucleus with plasmalemma
3) Connections between adjacent cells
4) Lignified cemented layers between cells

44. Removal of introns and joining the exons in a defined order in a transcription unit is called:
1) Tailing
2) Transformation
3) Capping
4) Splicing

45. Phylogenetic system of classification is based on :
1) Morphological features
2) Chemical constituents
3) Floral characters
4) Evolutionary relationships

46. Which part of human brain is concerned with the regulation of body temperature?
1) Cerebellum
2) Cerebrum
3) Hypothalamus
4) Medulla Oblongata

47. Semiconservative replication of DNA was first demonstrated in:
1) Escherichia coli
2) Streptococcus pneumoniae
3) Salmonella typhimurium
4) Drosophila melanogaster

48. Which one of the following pairs of animals comprises ‘jawless fishes’?
1) Mackerals and Rohu
2) Lampreys and hag fishes
3) Guppies and hag fishes
4) Lampreys and eels

49. Which of the following is a pair of viral diseases ?
1) Common Cold, AIDS
2) Dysentery, Common Cold
3) Typhoid, Tuberculosis
4) Ringworm, AIDS

50. Aerobic respiratory pathway is appropriately termed:
1) Parabolic
2) Amphibolic
3) Anabolic
4) Catabolic

51. A country with a high rate of population growth took measures to reduce it. The Figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them:

1) “B” is earlier pyramid and shows stabilised growth rate.
2) “B” is more recent showing that population is very young.
3) “A” is the earlier pyramid and no change has occurred in the growth rate.
4) “A” is more recent and shows slight reduction in the growth rate.

52. Cytoskeleton is made up of:
1) Callose deposits
2) Cellulosic microfibrils
3) Proteinaceous filaments
4) Calcium carbonate granules

53. An example of axile placentation is:
1) Dianthus
2) Lemon
3) Marigold
4) Argemone

54. Which one of the following has haplontic life cycle ?
1) Polytrichum
2) Ustilago
3) Wheat
4) Funaria

55. Steps taken by the Government of India to control air pollution include:
1) compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons.
2) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles.
3) use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks.
4) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

56. Which one of the following is considered important in the development of seed habit?
1) Heterospory
2) Haplontic life cycle
3) Free-living gametophyte
4) Dependent sporophyte

57. The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:
1) Elongating
2) Widening
3) Differentiating
4) Maturing

58. The correct sequence of plants in a hydrosere is:
1) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
2) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
3) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
4) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox

59. Stroma in the chloroplasts of higher plant contains:
1) Light-dependent reaction enzymes
2) Ribosomes
3) Chlorophyll
4) Light-independent reaction enzymes

60. A health disorder that results from the deficiency of thyroxine in adults and characterised by (i) a low metabolic rate, (ii) increase in body weight and (iii) tendency to retain water in tissues is:
1) simple goitre
2) Myxoedema
3) Cretinism
4) Hypothyroidism

61. Mannitol is the stored food in:
1) Porphyra
2) Fucus
3) Gracillaria
4) Chara

62. Which one of the following pairs is wrongly matched ?
1) Alcohol – nitrogenase
2) Fruit juice – pectinase
3) Textile – amylase
4) Detergents – lipase

63. Which of the following is not used as a biopesticide ?
1) Trichoderma harzianum
2) Nuclear Polyhedrosis Virus (NPV)
3) Xanthomonas campestris
4) Bacillus thuringiensis

64. Which one of the following is a vascular cryptogam?
1) Ginkgo
2) Marchantia
3) Cedrus
4) Equisetum

65. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
1) S – start of systole
2) T – end of diastole
3) P – depolarisation of the atria
4) R – repolarisation of ventricles

66. Uric acid is the chief nitrogenous component of the excretory products of:
1) Earthworm
2) Cockroach
3) Frog
4) Man

67. Guard cells help in:
1) Transpiration
2) Guttation
3) Fighting against infection
4) Protection against grazing

68. Montreal Protocol aims at:
1) Biodiversity conservation
2) Control of water pollution
3) Control of CO2 emission
4) Reduction of ozone depleting substances

69. DDT residues are rapidly passed through food chain causing biomagnification because DDT is:
1) moderately toxic
2) non-toxic to aquatic animals
3) water soluble
4) lipo soluble

70. Vegetative propagation in mint occurs by:
1) Offset
2) Rhizome
3) Sucker
4) Runner

71. Select the incorrect statement from the following:
1) Galactosemia is an inborn error of metabolism
2) Small population size results in random genetic drift in a population
3) Baldness is a sex-limited trait
4) Linkage is an exception to the principle of independent assortment in heredity

72. Cotyledons and testa respectively are edible parts in:
1) walnut and tamarind
2) french bean and coconut
3) cashew nut and litchi
4) groundnut and pomegranate

73. Which one of the following statements is correct ?
1) Benign tumours show the property of metastasis.
2) Heroin accelerates body functions.
3) Malignant tumours may exhibit metastasis.
4) Patients who have undergone surgery are given cannabinoids to relieve pain.

74. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
1) spermatogonia – spermatocyte – spermatid – sperms
2) spermatid – spermatocyte – spermatogonia – sperms
3) spermatogonia – spermatid – spermatocyte – sperms
4) spermatocyte – spermatogonia – spermatid – sperms

75. Use of anti-histamines and steroids give a quick relief from:
1) Nausea
2) Cough
3) Headache
4) Allergy

76. Chipko movement was launched for the protection of:
1) Forests
2) Livestock
3) Wet lands
4) Grasslands

77. Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?
1) maintenance of the hypertrophical endometrial lining
2) maintenance of high concentration of sex hormones in the blood stream
3) retention of well-developed corpus luteum
4) fertilisation of the ovum

78. Globulins contained in human blood plasma are primarily involved in:
1) osmotic balance of body fluids
2) oxygen transport in the blood
3) clotting of blood
4) defence mechanisms of body

79. Which one of the following is the correct matching of three items and their grouping category ?
Items Group
(1) ilium, ischium, pubis coxal bones of pelvic girdle
(2) actin, myosin, rhodopsin muscle proteins
(3) cytosine, uracil, thiamine pyrimidines
(4) malleus, incus, cochlea ear ossicles

1) 1
2) 2
3) 3
4) 4

80. Somaclones are obtained by
1) Plant breeding
2) Irradiation
3) Genetic engineering
4) Tissue culture

81. In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of :
1) appearance of the darker coloured individuals due to very poor sunlight
2) protective mimicry
3) inheritance of darker colour character acquired due to the darker environment
4) natural selection whereby the darker forms were selected

82. Transgenic plants are the ones:
1) generated by introducing foreign DNA into a cell and regenerating a plant from that cell.
2) produced after protoplast fusion in artificial medium.
3) grown in artificial medium after hybridization in the field.
4) produced by a somatic embryo in artificial medium.

83. Which one of the following pairs of food components in humans reaches the stomach totally undigested?
1) Starch and fat
2) Fat and cellulose
3) Starch and cellulose
4) Protein and starch

84. A change in the amount of yolk and its distribution in the egg will affect:
1) Pattern of cleavage
2) Number of blastomeres produced
3) Fertilization
4) Formation of zygote

85. Middle lamella is composed mainly of:
1) Muramic acid
2) Calcium pectate
3) Phosphoglycerides
4) Hemicellulose

86. Elbow joint is an example of:
1) hinge joint
2) gliding joint
3) ball and socket joint
4) pivot joint

87. Which of the following is a symbiotic nitrogen fixer ?
1) Azotobacter
2) Frankia
3) Azolla
4) Glomus

88. Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet”?
1) Hershey and Chase
2) Morgan and Sturtevant
3) Beadle and Tatum
4) Nirenberg and Mathaei

89. Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem ?
1) Fish
2) Zooplankton
3) Frog
4) Phytoplankton

90. Which one of the following acids is a derivative of carotenoids ?
1) Indole-3-acetic acid
2) Gibberellic acid
3) Abscisic acid
4) Indole butyric acid

91. The bacterium Bacillus thuringiensis is widely used in contemporary biology as:
1) Insecticide
2) Agent for production of dairy products
3) Source of industrial enzyme
4) Indicator of water pollution

92. An example of a seed with endosperm, perisperm, and caruncle is:
1) coffee
2) lily
3) castor
4) cotton

93. Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
1) Mesophytes
2) Epiphytes
3) Hydrophytes
4) Xerophytes

94. Point mutation involves:
1) Change in single base pair
2) Duplication
3) Deletion
4) Insertion

95. Which one of the following correctly describes the location of some body parts in the earthworm Pheretima ?
1) Four pairs of spermathecae in 4 – 7 segments.
2) One pair of ovaries attached at intersegmental septum of 14th and 15th segments.
3) Two pairs of testes in 10th and 11th segments.
4) Two pairs of accessory glands in 16 – 18 segments.

96. The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in:
1) nails
2) ear ossicles
3) tip of the nose
4) vertebrae


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16 Responses to AIPMT Online Test Series – Biology

  1. Zeenat says:


  2. Meenakshi Choudhary says:

    Appearing for AIPMT 2015 exam ?? Need Free study Material , mock test paper and last year solved AIPMT Papers then

  3. Very helpful questions are there in the above article. One must go through it.

  4. Gourav Jain says:

    Its my view that for any appearing candidate for medical exam must solve these test papers in order to gain knowledge, skill and shall help you to get an idea about the multiple choice questions . But remember be clam and quite will solving
    Best Of Luck

  5. AIPMT stands for All India Pre Medical Test.
    It’s an all India base entrance examination for the students who wanted to make their career in Medical.
    Biology is one of the most important subject for any entrance examination to be educated in Medical.
    Who are preparing themselves for AIPMT examination this question paper will help them for practicing.

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