2018 NEET Biology Solved Paper

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Previous Year Paper Biology - 2018
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Biology NEET 2018
Exam Year 2018
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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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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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• 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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• 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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• 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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• 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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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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• 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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• 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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• 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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• 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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