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Title: 2018 NEET Biology Solved Paper


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Previous Year Paper Biology - 2018
2
Biology NEET 2018
Exam Year 2018
Study, Assignments, Solved Previous Year Papers .
Questions and Answers. Free Forever.
Multiple Choice Questions 1. Match the items
given in Column I with those in Column II and
select the correct option given below column
i column ii a Tricuspid valve i Between left
atrium and left ventricle b Bicuspid valve ii
Between right ventricle and pulmonary artery c
Semilunar valve iii Between right atrium and
right ventricle
a b c
iii i ii
a b c
i iii ii
a b c
ii i iii
a b c
i ii iii
Answer 2. Match the items given in Column I with
those in Column II and select the correct option
given below Column i Column ii
a Tidal volume i 2500 3000 mL
b Inspiratory Reserve volume ii 1100 1200 mL
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Biology NEET 2018
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c d Expiratory Reserve volume Residual volume iii iv 500 550 mL 1000 1100 mL
a iii b ii c i d iv
a iii b i c iv d ii
a iv b iii c ii d i
a i b iv c ii d iii
  • Answer
  • Which of the following is an amino acid derived
    hormone? Epinephrine
  • Ecdysone Estriol Estradiol
  • Answer
  • Which of the following structures or regions is
    incorrectly paired with its functions? Medulla
    oblongata Controls respiration and
    cardiovascular re?exes
  • Limbic system consists of ?bre tracts that
    interconnect di?erent regions of brain controls
    movement.
  • Corpus callosum band of ?bres connecting system
    left and right cerebral hemispheres.
    Hypothalamus production of releasing hormones
    and regulation of temperature,the hunger and
    thirst.
  • Answer

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Biology NEET 2018
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  • The transparent lens in the human eye is held in
    its place by
  • ligaments attached to the ciliary body ligaments
    attached to the iris
  • smooth muscles attached to the ciliary body
    smooth muscles attached to the iris
  • Answer
  • Which of the following hormones can play a
    signi?cant role in osteoporosis? Aldosterone and
    Prolactin
  • Progesterone and Aldosterone Parathyroid hormone
    and Prolactin Estrogen and Parathyroid hormone
  • Answer
  • Which of the following gastric cells indirectly
    help in erythropoiesis? Chief cells
  • Mucous cells Parietal cells Goblet cells
  • Answer
  • Match the items given in Column I with those in
    Column II and select the correct option given
    below
  • Column I Column II
  • a Fibrinogen i Osmotic balance

b Globulin
ii Blood clotting
iii Defence
c Albumin
mechanism
a
b
c
iii
ii
i
a
b
c
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i ii iii
a b c
ii iii i
a b c i ii iii
  • Answer
  • Which of the following is an occupational
    respiratory disorder? Anthracis
  • Silicosis Emphysema Botulism
  • Answer
  • Calcium is important in skeletal muscle
    contraction because it
  • Binds to troponin to remove the masking of active
    sites on actin for myosin. Activates the myosin
    ATPase by binding to it.
  • Prevents the formation of bonds between the
    myosin cross bridges and the actin ?lament.
    Detaches the myosin head from the actin ?lament.
  • Answer
  • Select the incorrect match
  • Lampbrush Diplotene bivalents chromosomes
    Allosomes Sex chromosomes
  • Polytene chromosomes Oocytes of amphibians
    Submetacentric chromosome L-shaped chromosomes
  • Answer
  • Nissl bodies are mainly composed of Proteins and
    lipids
  • DNA and RNA
  • Free ribosomes and RER Nucleic acids and SER
  • Answer

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Biology NEET 2018
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  • Which of the following events does not occur in
    rough endoplasmic reticulum?
  • Protein folding Protein glycosylation
  • Phospholipid synthesis Cleavage of signal
    peptide
  • Answer
  • Which of the following terms describe human
    dentition? Thecodont, Diphyodont, Homodont
  • Thecodont, Diphyodont, Heterodont Pleurodont,
    Diphyodont, Heterodont Pleurodont, Monophyodont,
    Homodont
  • Answer
  • Identify the vertebrate group of animals
    characterized by crop and gizzard in its
    digestive system Amphibia
  • Reptilia Osteichthyes Aves
  • Answer
  • Which one of these animals is not a homeotherm?
    Macropus
  • Chelone Psittacula Camelus
  • Answer
  • Which of the following features is used to
    identify a male cockroach from a female
    cockroach? Presence of a boat-shaped sternum on
    the 9th abdominal segment
  • Presence of caudal styles Presence of anal cerci
    Forewings with darker tegmina
  • Answer
  • Which of the following organisms are known as
    chief producers in the oceans? Dino?agellates
  • Diatoms Euglenoids Cyanobacteria

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Biology NEET 2018
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  • Answer
  • Ciliates di?er from all other protozoans in
    using ?agella for locomotion
  • having a contractile vacuole for removing excess
    water having two types of nuclei
  • using pseudopodia for capturing prey Answer
  • Which of the following animals does not undergo
    metamorphosis? Earthworm
  • Tunicate Star?sh Moth
  • Answer
  • Match the items given in Column I with those in
    Column II and select the correct option given
    below

Column I Function Ultra?ltration Concentration of urine c Transport of urine d Storage of urine Column II Part of the Excretory system i Henle's loop Ureter Urinary bladder Malpighian corpuscle Proximal convoluted tubule
a b c d
iv v ii iii
a b c d
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iv i ii iii
a b c d
v iv i iii
a b c d
v iv i ii
Answer 22. Match the items given in Column I
with those in Column II and select the correct
option given below Column I Column II
a Glycosuria
i Accumulation of uric acid in joints
b Gout
ii Mass of crystallised salts within the kidney
c Renal calculi
iii In?ammation in glomeruli
d Glomerular nephritis
iv Presence of in glucose urine
a b c d iii ii iv i a b c d i ii iii iv
a
b
c
d
iv
i
ii
iii
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  • a b c d
  • ii iii i iv Answer
  • What is the role of NAD in cellular respiration?
    It functions as an enzyme.
  • It functions as an electron carrier.
  • It is the ?nal electron acceptor for anaerobic
    respiration. It is a nucleotide source for ATP
    synthesis.
  • Answer
  • Which one of the following plants shows a very
    close relationship with a species of moth, where
    none of the two can complete its life cycle
    without the other?
  • Hydrilla Yucca Viola Banana
  • Answer
  • Oxygen is not produced during photosynthesis by
    Green sulphur bacteria
  • Nostoc Chara Cycas
  • Answer
  • In which of the following forms is iron absorbed
    by plants? Ferric
  • Ferrous
  • Both ferric and ferrous Free element
  • Answer
  • Which of the following elements is responsible
    for maintaining turgor in cells? Magnesium

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Biology NEET 2018
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  • Potassium
  • Answer
  • Which of the following is not a product of light
    reaction of photosynthesis? ATP
  • NADH
  • Oxygen NADPH
  • Answer
  • Stomatal movement is not a?ected by Temperature
  • Light
  • CO2 concentration O2 concentration
  • Answer
  • The Golgi complex participates in Fatty acid
    breakdown Formation of secretory vesicles
    Activation of amino acid Respiration in bacteria
  • Answer
  • Stomata in grass leaf are
  • Dumb-bell shaped Kidney Shaped Barrel shaped
    Rectangular
  • Answer
  • Which one is wrongly matched? Uni?agellate
    gametes Polysiphonia Bi?agellate zoospores
    Brown algae Unicellular organism Chlorella
    Gemma cups Marchantia
  • Answer
  • After karyogamy followed by meiosis, spores are
    produced exogenously in Neurospora

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  • Alternaria
  • Saccharomyces Agaricus
  • Answer
  • Pneumatophores occur in
  • Halophytes
  • Free-?oating hydrophytes Submerged hydrophytes
    Carnivorous plants
  • Answer
  • Plants having little or no secondary growth are
    Grasses
  • Deciduous angiosperms Cycads
  • Conifers Answer
  • Casparian strips occur in Epidermis Pericycle
    Endodermis Cortex
  • Answer
  • Secondary xylem and phloem in dicot stem are
    produced by Apical meristems
  • Vascular cambium Axillary meristems Phellogen
  • Answer
  • Select the wrong statement
  • Cell wall is present in members of Fungi and
    Plantae Mushrooms belong to Basidiomycetes
  • Mitochondria are the powerhouse of the cell in
    all kingdoms except Monera Pseudopodia are
    locomotory and feeding structures in Sporozoans
  • Answer

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Biology NEET 2018
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  • Stem
  • Adventitious root Rhizome
  • Tap root Answer
  • The di?erence between spermiogenesis and
    spermiation is
  • In spermiogenesis spermatids are formed, while in
    spermiation spermatozoa are formed. In
    spermiogenesis spermatozoa are formed, while in
    spermiation spermatids are formed.
  • In spermiogenesis spermatozoa are formed, while
    in spermiation spermatozoa are released from
    sertoli cells into the cavity of seminiferous
    tubules.
  • In spermiogenesis spermatozoa from sertoli cells
    are released into the cavity of seminiferous
    tubules, while in spermiation spermatozoa are
    formed.
  • Answer
  • The amnion of mammalian embryo is derived from
    ectoderm and mesoderm
  • endoderm and mesoderm ectoderm and endoderm
    mesoderm and trophoblast
  • Answer
  • The contraceptive SAHELI
  • blocks estrogen receptors in the uterus,
    preventing eggs from getting implanted.
    increases the concentration of estrogen and
    prevents ovulation in females.
  • is a post-coital contraceptive. is an IUD.
  • Answer
  • Hormones secreted by the placenta to maintain
    pregnancy are hCG, hPL, progestogens, prolactin
  • hCG, hPL, estrogens, relaxin, oxytocin
  • hCG, progestogens, estrogens, glucocorticoids
    hCG, hPL, progestogens, estrogens
  • Answer

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Biology NEET 2018
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Proliferative Phase Secretory Phase Menstruation Breakdown of endometrial lining Follicular Phase Luteal Phase
a b c
iii ii i
a b c
i iii ii
a b c
iii i ii
a b c
ii iii i
  • Answer
  • All of the following are part of an operon except
    an operator
  • structural genes a promoter
  • an enhancer Answer
  • A woman has an X-linked condition on one of her X
    chromosomes. This chromosome can be inherited by
    Only daughters
  • Only sons
  • Both sons and daughters Only grandchildren
  • Answer

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Biology NEET 2018
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  • According to Hugo de Vries, the mechanism of
    evolution is
  • Multiple step mutations Saltation
  • Minor mutations Phenotypic variations
  • Answer
  • AGGTATCGCAT is a sequence from the coding strand
    of a gene. What will be the corresponding
    sequence of the transcribed mRNA?
  • AGGUAUCGCAU UGGTUTCGCAT UCCAUAGCGUA
    ACCUAUGCGAU
  • Answer
  • Among the following sets of examples for
    divergent evolution, select the incorrect option
    Forelimbs of man, bat and cheetah
  • Heart of bat, man and cheetah Eye of octopus,
    bat and man Brain of bat, man and cheetah
  • Answer
  • Conversion of milk to curd improves its
    nutritional value by increasing the amount of
    Vitamin D
  • Vitamin A Vitamin E Vitamin B12
  • Answer
  • Which of the following is not an autoimmune
    disease? Psoriasis
  • Rheumatoid arthritis Vitiligo
  • Alzheimer's disease Answer
  • The similarity of bone structure in the forelimbs
    of many vertebrates is an example of Homology
  • Analogy

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  • Adaptive radiation
  • Convergent evolution Answer
  • Which of the following characteristics represent
    Inheritance of blood groups in humans?
  • Dominance
  • Co-dominance
  • Multiple allele
  • Incomplete dominance
  • Polygenic inheritance
  • b, c and e a, b and c a, c and e b, d and e
  • Answer
  • In which disease does mosquito-transmitted
    pathogen cause chronic in?ammation of lymphatic
    vessels? Elephantiasis
  • Ascariasis Amoebiasis Ringworm disease
  • Answer
  • All of the following are included in ex-situ
    conservation except Wildlife safari parks
  • Sacred groves Seed banks Botanical gardens
  • Answer
  • Which part of poppy plant is used to obtain the
    drug Smack? Flowers
  • Latex Leaves Roots
  • Answer

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  • reproductive individuals are less than the
    post-reproductive individuals.
  • pre-reproductive individuals are less than the
    reproductive individuals. reproductive and
    pre-reproductive individuals are equal in number.
  • Answer
  • Which one of the following population
    interactions is widely used in medical science
    for the production of antibiotics?
  • Commensalism Mutualism Amensalism Parasitism
  • Answer
  • Match the items given in Column I with those in
    Column II and select the correct option given
    below
  • Column I Column II
  • a Eutrophication i UV-B radiation b Sanitary
    land?ll ii Deforestation
  • c Snow blindness iii Nutrient enrichment d Jhum
    cultivation iv Waste disposal

a b c d
ii i iii iv
a b c d
i iii iv ii
a b c d
i ii iv iii
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a b c d
iii iv i ii
  • Answer
  • Which of the following options correctly
    represents the lung conditions in asthma and
    emphysema, respectively?
  • In?ammation of bronchioles Decreased respiratory
    surface Increased number of bronchiolesIncreased
    respiratory surface Decreased respiratory
    surfaceIn?ammation of bronchioles Increased
    respiratory surfaceIn?ammation of bronchioles
  • Answer
  • Which of these statements is incorrect?
  • Enzymes of TCA cycle are present in mitochondrial
    matrix Glycolysis occurs in cytosol
  • Oxidative phosphorylation takes place in outer
    mitochondrial membrane
  • Glycolysis operates as long as it is supplied
    with NAD that can pick up hydrogen atoms Answer
  • Many ribosomes may associate with a single mRNA
    to form multiple copies of a polypeptide
    simultaneously. Such strings of ribosomes are
    termed as
  • Polysome Polyhedral bodies Nucleosome
    Plastidome
  • Answer
  • Double fertilization is
  • Fusion of two male gametes of a pollen tube with
    two di?erent eggs Fusion of one male gamete with
    two polar nuclei
  • Syngamy and triple fusion
  • Fusion of two male gametes with one egg Answer
  • Pollen grains can be stored for several years in
    liquid nitrogen having a temperature of
  • 120C
  • 80C
  • 160C

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Biology NEET 2018
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  • 196C
  • Answer
  • Which among the following is not a prokaryote?
    Saccharomyces
  • Mycobacterium Oscillatoria Nostoc
  • Answer
  • The two functional groups characteristic of
    sugars are Hydroxyl and methyl
  • Carbonyl and methyl Carbonyl and hydroxyl
    Carbonyl and phosphate
  • Answer
  • Which of the following is true for nucleolus?
    Larger nucleoli are present in dividing cells It
    is a membrane-bound structure
  • It is a site for active ribosomal RNA synthesis
    It takes part in spindle formation
  • Answer
  • The stage during which separation of the paired
    homologous chromosomes begins is Pachytene
  • Diplotene Zygotene Diakinesis
  • Answer
  • Which of the following is commonly used as a
    vector for introducing a DNA fragment in human
    lymphocytes?
  • Retrovirus Ti plasmid pBR 322
  • ? phage Answer
  • Use of bioresources by multinational companies
    and organisations without authorisation from the
    concerned country and its people is called

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Biology NEET 2018
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  • Bio-infringement
  • Biopiracy Bioexploitation Biodegradation
  • Answer
  • In India, the organisation responsible for
    assessing the safety of introducing genetically
    modi?ed organisms for public use is
  • Indian Council of Medical Research (ICMR)
  • Council for Scienti?c and Industrial Research
    (CSIR) Genetic Engineering Appraisal Committee
    (GEAC) Research Committee on Genetic
    Manipulation (RCGM)
  • Answer
  • The correct order of steps in Polymerase Chain
    Reaction (PCR) is Extension, Denaturation,
    Annealing
  • Annealing, Extension, Denaturation Denaturation,
    Annealing, Extension Denaturation, Extension,
    Annealing
  • Answer
  • Select the correct match
  • Ribozyme - Nucleic acid
  • F2 Recessive parent - Dihybrid cross
  • G. Mendel - Transformation
  • T.H. Morgan - Transduction Answer
  • A new variety of rice was patented by a foreign
    company, though such varieties have been present
    in India for a long time. This is related to
  • Co-667
  • Sharbati Sonora Basmati
  • Lerma Rojo Answer

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Biology NEET 2018
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  • Francois Jacob and Jacques Monod - Lac operon
  • Matthew Meselson and F. Stah - Pisum sativum
    Answer
  • Which of the following has proved helpful in
    preserving pollen as fossils? Pollenkitt
  • Cellulosic intine Sporopollenin Oil content
  • Answer
  • The experimental proof for semiconservative
    replication of DNA was ?rst shown in a Fungus
  • Bacterium Virus Plant
  • Answer
  • Which of the following pairs is wrongly matched?
    Starch synthesis in pea Multiple alleles ABO
    blood grouping Co-dominance
  • T.H. Morgan Linkage
  • XO type sex determination Grasshopper
  • Answer
  • O?sets are produced by
  • Meiotic divisions Mitotic divisions
    Parthenogenesis Parthenocarpy
  • Answer
  • Select the correct statement
  • Franklin Stahl coined the term linkage

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Biology NEET 2018
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  • Bamboo species
  • Jackfruit Papaya Mango
  • Answer
  • Niche is
  • all the biological factors in the organism's
    environment the physical space where an organism
    lives
  • the functional role played by the organism where
    it lives the range of temperature that the
    organism needs to live
  • Answer
  • In stratosphere, which of the following elements
    acts as a catalyst in degradation of ozone and
    release of molecular oxygen?
  • Carbon Cl Oxygen Fe
  • Answer
  • What type of ecological pyramid would be obtained
    with the following data? Secondary consumer
    120 g
  • Primary consumer 60 g Primary producer 10 g
  • Inverted pyramid of biomass Pyramid of energy
  • Upright pyramid of biomass Upright pyramid of
    numbers
  • Answer
  • Which of the following is a secondary pollutant?
    CO
  • CO2 O3 SO2
  • Answer
  • World Ozone Day is celebrated on

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Biology NEET 2018
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  • 5th June
  • 21st April 22nd April
  • 16th September Answer
  • Natality refers to
  • Death rate Birth Rate
  • Number of individuals entering a habitat Number
    of individuals leaving the habitat
  • Answer
  • Match the items given in Column I with those in
    Column II and select the correct option given
    below
  • Column I Column II
  • a Herbarium i It is a place having a collection
    of preserved plants and animals

ii A list that enumerates methodically all the
species found in an area with brief description
aiding
b Key
identi?cation
c Museum iii Is a place where dried and pressed
plant specimens mounted on sheets are kept d
Catalogue iv A booklet containing a list of
characters and their alternates which are helpful
in identi?cation of various taxa.
a b c d (i) (iv) (iii) (ii) a b c d (iii) (ii)
(i) (iv) a b c d
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  • (iii) (iv) (i) (ii)
  • a b c d
  • (ii) (iv) (iii) (i) Answer
  • Winged pollen grains are present in Mustard
  • Cycas Pinus Mango
  • Answer
  • Which of the following statements is correct?
  • Ovules are not enclosed by ovary wall in
    gymnosperms Selaginella is heterosporous, while
    Salvinia is homosporous Stems are usually
    unbranched in both Cycas and Cedrus Horsetails
    are gymnosperms
  • Answer

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