MAHA SET 2018 Question Paper 3 Life Science

Test Booklet Code & Serial No.
A
LIFE SCIENCE
Signature and Name of Invigilator Seat No.
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(Name) ................................................ Seat No. ..............................................................
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(Name) ................................................ OMR Sheet No.
JAN - 34318 (To be filled by the Candidate)
Time Allowed : 2½ Hours] [Maximum Marks : 150
Number of Pages in this Booklet : 20 Number of Questions in this Booklet : 75
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covering entire syllabus (including all electives, without options).
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2

Life Science
Paper III
Time Allowed : 2½ Hours] [Maximum Marks : 150
Note : This paper contains Seventy Five (75) multiple choice questions. Each
question carries Two (2) marks. Attempt All questions.

1. Family Gutliferae is a conserved name 3. The family is central in flowering

of an alternative name, family : plant systematics : This is the

principle of..................system of
(A) Fabaceae
classification.
(B) Clusiaceae
(A) APG
(C) Arecaceae
(B) Bentham & Hooker

(D) Apiaceae
(C) Engler & Prantl

2. Bentham & Hooker’s system of
(D) Armen Takhtajan

classification of plants covers all :
4. Maleic acid and Fumaric acid are :

(A) Embryophytes
(A) Geometric isomers

(B) Thallophytes (B) Chiral isomers

(C) Seed plants (C) Enantiomers

(D) Angiosperms (D) Diastereomers

3 [P.T.O.

5. Usnea, a lichen being used in the 8. Which of the following seed plants

spices is of............ type. have retained the flagellated type of

(A) Crustose sperm ? Choose the correct

option :
(B) Foliose
(i) Cycas
(C) Squamulose
(ii) Gnetum
(D) Fruiticose
(iii) Welwitschia
6. Association of algae and fungi is

called as : (iv) Casurina

(A) Parasitism (v) Ginkgo

(B) Symbiotism (A) (i) and (ii)

(C) Helotism (B) (iii) and (iv)

(D) Heterothallism (C) (i) and (v)

7. Characteristic nodules are found on (D) (iv) and (v)

the roots of : 9. In viviparous plants, the seeds have :

(A) Lamiaceae (A) Longer dormancy period

(B) Asteraceae (B) No dormancy period

(C) Acanthaceae (C) Low viability

(D) Fabaceae (D) High viability

4

10. In Cucurbitaceae, during fertili- 12. Nitrogen availability will be highest

zation entry of the pollen tube occurs on the supplement of.......... to the

through integuments. This type of plants.

fertilization is referred as :
(A) Ammonium sulphate

(A) Porogamy
(B) Ammonium chloride

(B) Mesogamy
(C) Urea
(C) Chalazogamy
(D) Potassium nitrate
(D) Isogamy
13. In polymer-traping model of phloem
11. Alkaloids–ajmalicine, serpentine
loading, raffinose and stachyose are
and reserpine are obtained from the
synthesized in the.......
roots of :

(A) mesophyll cell
(A) Rauwolfia serpentina

(B) bundle sheath cell
(B) Bacopa monneiri

(C) intermediary cell
(C) Papaver somniferum

(D) Catharanthus roseus (D) sieve element

5 [P.T.O.

14. In photorespiration, the release of 17. Genetic variation in pure lines is
CO2 occurs from............. : possible due to :

(A) Ribulose 1,5-bisphosphate (A) Selfing

(B) 2-Phosphoglycolate
(B) Cloning
(C) Glyoxylate
(C) Mutation
(D) Glycine
(D) Vegetative propagation
15. Which of the following is essential
18. Gemmules are important for.
for Nitrogen fixation ?
(A) Sexual reproduction
(A) Anthocyanin
(B) Survival under drought
(B) Flavanoids
conditions
(C) Fatty acids & their derivatives
(C) Asexual reproduction
(D) Leghaemoglobin
(D) Survival in freshwater
16. ............. is not a naturally occurring
19. The female genital pore of the
plant growth regulator, and it does
earthworm Pheretima posthuma is
not occur as a base in the DNA of
located in segment :
any species :
(A) 11
(A) Indole-3-acetic acid
(B) 14
(B) Kinetin

(C) Zeatin (C) 18

(D) Gibberellin (D) 21

6

22. Podocytes are cells in the renal
20. Adult of urochordates are highly
corpuscles that :

specialized having lost the following (A) form the outer wall of the
Bowman’s capsule.
characteristics except :
(B) Form the muscle coating of the

(A) Notochord afferent and efferent arterioles

(C) Form the intra- and extra-
(B) Siphon glomerular mesangium

(D) Wrap around the glomerular
(C) Nerve chord
capillaries

23. The hormone progesterone :
(D) Coelom
(A) is produced by the
21. The opercular covering of gills is hypothalamus and stored in the
posterior pituitary.
absent in :
(B) plays a major role in preparing
the uterus for implantation.
(A) Latimeria
(C) is solely responsible for the
(B) Hammer-head maintenance of secondary sex
characteristics.
(C) Labeo
(D) is solely responsible for
stimulation of FSH production
(D) Salmon
and follicle growth.

7 [P.T.O.

24. Organisms where various 26. Which one of the following

statements is correct for Oxytocin
blastomeres become restricted to
and Vasopressin ?
form only specific structures as soon
(A) Oxytocin is released from the
as they are formed or during
hypothalamus, while Vaso-
development the first few cleavages pressin not.

are : (B) Oxytocin is involved in

parturition, while Vasopressin
(A) Tunicates
with urine concentration.
(B) Amniotes
(C) Vasopressin acts on muscles,

(C) Amphibians while Oxytocin does not.

(D) Oxytocin is involved in urine
(D) Mammals
concentration, while Vaso-
25. In the Acrosome, there is an pressin with milk ejection.

abundance of Bindin. The method to 27. In species whose young are

detect such in situ distribution is : precocial, the father is more likely

to be :
(A) Immuno cytochemistry
(A) Monogamous
(B) Western blot
(B) Polyandrous

(C) ELISA (C) Polygamous

(D) SDS PAGE (D) Monoandrous.

8

28. Leishmania gains entry in the 31. Artificial sweetener aspartame is :

macrophages via the : (A) L- Aspartyl- L -Phenylalanine
methyl ester.
(A) FC receptors
(B) L-Aspartyl- D - Phenylalanine
(B) MHC II receptors
methyl ester

(C) Toll like receptors (C) D- Aspartyl - D - Phenylalanine
methyl ester
(D) Pattern recognition receptors
(D) D- Aspartyl - L- Phenylalanine
29. The major ingredient of Bordeaux
methyl ester
mixture is :
32. In human, hypertrichosis is
(A) Potassium chloride inherited as Y-linked trait. If a man
marries a normal woman, which of
(B) Copper sulphate
the following types of offspring may
(C) Megnesium sulphate they have ?

(D) Ammoniun nitrate (A) All sons and daughters will
have hypertrichosis
30. The best method for controlling
(B) All sons will have hypertrichosis
stored grain pests is through :
but none of the daughters.
(A) Fumigation
(C) Only half of their sons will have
(B) Systemic insecticide hypertrichosis but none of the
daughters
(C) Heating
(D) None of the children will have
(D) Introduction of biological agents
hypertrichosis.

9 [P.T.O.

33. When a signal molecule binds to a
36. Nilgiri Tahr or Nilgiritragus
G protein-linked receptor the G

Protein : hylocrius is only confined to :

(A) gets activated (A) Sasan Gir, Gujarat

(B) binds with a C a 2 molecule
(B) Eravikulam National Park,
(C) binds with Calmodulin
Kerala
(D) None of the above

34. The largest and potential reservoir (C) Tadoba, Maharashtra

of carbon is :
(D) Bandhavgarh, Madhya
(A) Forests
Pradesh
(B) Agricultural fields

(C) Oceans 37. Which one of the following animals

(D) Atmosphere inhabits metahaline environment of

35. Which one of the following birds is
salt pens ?
recorded as last extinct species from

earth ? (A) Grabs

(A) Blue rock pigeon
(B) Artemia
(B) White peacock
(C) Prawns
(C) Lesser Punguin

(D) Dodo (D) Shrimps

10

38. Which of the following set of abiotic 40. T-even bacteriophages have :

factors, the organisms need to adapt (A) Binal symmetry
for survival in deep sea ?
(B) Helical symmetry
(A) Low temperature, high
(C) Complex symmetry
pressure, and low oxygen level.
(D) Polyhedral symmetry
(B) Low temperature, low pressure
41. Which of the following components
and low oxygen level.
prevents vortex formation in a
(C) High temperature, high
fermenter ?
pressure and high oxygen level.
(A) Sparger
(D) High temperature, low pressure
(B) Propeller
and high oxygen level.
(C) Bafle
39. Which one of the following

statements regarding HIV is not (D) Impeller

correct ? 42. Which of the following micro-

(A) It belongs to family Retroviridale organisms is most likely to be found

in the human stomach ?
(B) It is an Oncovirus
(A) Helicobacter pylori
(C) It is associated with the enzyme

reverse transcriptase (B) Streptococcus sobrinus

(D) The virus is present in body (C) Streptococcus mutans

fluids. (D) Lactobacillus casei

11 [P.T.O.

43. Naturally acquired active immunity 45. What is the value of Vmax for an

would be most likely acquired enzyme which follows simple

through which of the following Michaelis-Menten Kinetics, if

processes ? Vo = 2 µ mol min–1 at 10 km ?

(A) Vaccination (A) 1.1 µ mol min–1

(B) Drinking colostrum (B) 2.2 µ mol min–1

(C) Natural birth (C) 3.3 µ mol min–1

(D) Infection with disease causing (D) 11 µ mol min–1

organism followed by recovery 46. The glycosyl bond conformation in

44. Antibody titer refers to the : z-form of DNA is :

(A) Absolute amount of specific (A) Syn for pyrimidines and Anti for

antibody purines

(B) Avidity of specific antibody (B) Anti for pyrimidines and Syn for

purines
(C) Concentration of specific

antibody (C) Anti for both pyrimidines and

purines
(D) Highest dilution of antibody

suitable to give a positive result (D) Syn for both pyrimidines and

in a test system. purines

12

47. Which of the following amino acids 49. Epinephrine is synthesized from which

among the following is preferred in of the following amino acids ?

a reverse turn ?
(A) Tryptophan

(A) Proline
(B) Proline

(B) Histidine (C) Glycine

(C) Glutamic acid (D) Tyrosine

(D) Alanine 50. The feasibility of a biochemical

48. Electrons from cytoplasmic NADH reaction is decided by the equation

are brought into mitochondria by G = H-T S. If both H and S

malate-aspartate shuttle pathway. have negative values, the reaction :

Select the correct option from below (A) is not favoured at any

for which this shuttle specifically temperature

operate.
(B) happens spontaneously

(A) Skeletal muscle
(C) is exergonic, favoured below

(B) Pancreas T = H/ S

(C) Brain (D) is endergonic, favoured above

T = H/ S
(D) Heart and Liver

13 [P.T.O.

53. A circular plasmid was digested with
51. Which of the following DNA repair
restriction enzymes to generate a
mechanism systems is operational,
map. Digestion with Bam H1

if environmental agents damage enzyme gave a single band of 11kb,

while digestion with Not I gave two
DNA ?
bands corresponding to 7kb and 8

(A) Base excision repair kb. What is the minimal size of the

circular plasmid that will be
(B) Nucleotide excision repair
consistent with above observation ?

(C) Mismatch repair (A) 11 kb

(B) 15 kb
(D) SOS response
(C) 26 kb

52. Mechanism of gene regulation does
(D) 22 kb

not include : 54. Recruitment of epigenetic factors on

DNA can be detected by :
(A) rate of transcription
(A) Immunoprecipitation

(B) processing of RNA transcript
(B) Immunoblotting

(C) stability of RNA transcript (C) Chromatin Immunoprecipit-

ation followed by PCR
(D) rate of replication
(D) Immunofluorescence

14

55. A messenger RNA is 222 nucleotides 57. RNAs that catalyze biochemical

reactions such as self-splicing
long including the initiator and
nitrous are known as :
termination codons. The number of
(A) Spliceosomes
amino acids in the protein translated
(B) Mature RNAs
from this mRNA is :
(C) Ribozymes
(A) 221
(D) Lariats

(B) 111 58. In what way does the ras oncogene

contribute to cancers ?
(C) 73
(A) ras codes for anti-apoptotic
(D) 74 protein, which is produced in

abnormally large amounts
56. Name the drug molecule
(B) ras codes for a GTPase switch
recommended for the treatment of
protein, which in its mutated
H1N1 flu :
form cannot be switched off.

(A) Paracetamol (C) ras codes for a transcription

factor, which is produced in
(B) Oseltamivir
abnormally large amounts.

(C) Amantidine (D) ras codes for a truncated form

of a growth factor receptor,
(D) Aspirin
which is continually active.
15 [P.T.O.

59. The concentration of infectious 61. For direct shoot regeneration from

plaque forming units (pfu) per leaf explants, requirement of growth

volume of fluid is known as the : hormones will be :

(A) Virulence (A) Auxin : Kinetin (1 : 0)

(B) Infectivity (B) Auxin : Kinetin (0 : 1)

(C) Titer (C) Auxin : Kinetin (1 : 1)

(D) Pathogenicity (D) Auxin : Kinetin (1 : 2)

60. Which one of the following could be 62. The total number of live cells in a

a correct sequence for a restriction culture is counted using the frypan

enzyme ? blue exclusion assay and is found to

(A) GAGAGA be 2.7 × 106 cells/ml. The culture is

diluted 1 : 27 and then 100 µl seeded
CTCTCT
per well into a 96 well plate. What
(B) AAGCTT
is the final cell density per
TTCGAA well ?

(C) GAGTCG (A) 1×105

CTCAGC (B) 2.7 × 104

(D) AAAAAA (C) 2.7 × 105

TTTTTT (D) 1 × 104

16

63. Which of the following is not a 65. The scanning electron microscope

property of fluid mosaic of
produced useful magnification upto :
membranes with respect to the
(A) 2,000 X
bacterial membrane components ?

(A) Lateral diffusion of proteins (B) 20,000 X

(B) Presence of sterols (C) 40,000 X

(C) Integral proteins
(D) 4,00,000 X

(D) Extrinsic proteins
66. The affinity of an antibody can be
64. Which one of the following
determined by measuring :
statements is incorrect ?

Calcium ions are necessary for : (A) Its concentration

(A) muscle contraction. (B) The valency of antigen

(B) release of neurotransmitter binding

from the presynaptic terminal.
(C) The amount of antibody bound
(C) propagation of action potential
at various antigen concen-
in a neuron.
trations
(D) mediating the action of several
(D) Its ability to neutralize toxins
second messengers.

17 [P.T.O.

67. In affinity chromatography heparin 70. Which one of the following
columns are used for purification of
electrodes will be a preferred choice
which of the following ?
for recording of transmembrane
(A) NAD+ dependent dehydrogenases
potential of a living cell ?
(B) glycoproteins
(A) Electrolyte filled glass capillary
(C) m-RNA of eukaryotes
electrode.
(D) DNA polymerases

68. Movement of lipids in membrane can (B) Solid steel uninsulated micro-

be studied using spectroscopic electrode.

technique ?
(C) Insulated copper microelectrode
(A) ESR
(D) Solid glass uninsulated thin
(B) NMR
rods.
(C) Fluorescence
71. Carbon-14 undergoes beta decay
(D) UV-visible absorption
upon which it is converted into a new
69. The metal usually used as a source
of electrons in an electron element having :

microscope is :
(A) Increased atomic number
(A) Iron
(B) Decreased atomic number
(B) Tungsten
(C) Increased mass number
(C) Silver
(D) Decreased mass number
(D) Copper

18

72. Liquid scintillation counting is used 74. Radioisotope of the element used for

positron emission tomography (PET)
for measurement of radioactivity of :
scan is :

(A) 14 C
(A) Sodium

(B) 131 I
(B) Iodine

(C) 57Cr (C) Uranium

(D) Xenon
(D) 235U

75. In a chi-square test, what will be the
73. Electromagnetic radiation consists of
degrees of freedom for a contingency
discrete packets of energy which are
table consisting of 3 rows (variable-

called as : 1) and 2 columns (variable 2) ?

(A) Quarks (A) 2

(B) 3
(B) Photons

(C) 5
(C) Positrons

(D) 6
(D) Electrons

19 [P.T.O.

ROUGH WORK

20