NEET UG 2018 · Biology · 90 questions
NEET 2018 Biology, question by question
The NEET 2018 Biology section had 90 questions from 35 chapters: 63 easy, 27 medium and 0 hard. 70% were easy, 9 points above the 2017–2026 average for Biology, and 42 (47%) came from Class 12. Biological Classification had the most, 6 questions.
Updated 2026-10-08
- Questions
- 90
- 50% of the paper
- Chapters asked
- 35
- 1 usual chapter skipped
- Easy
- 70%
- 2017–2026 average 61%
- From Class 12
- 47%
- 2017–2026 average 49%
The section
What Biology asked in 2018
Class balance, difficulty and the form of the questions. Bars below compare Biology across every paper from 2017–2026.
Botany and Zoology
- Botany
- Zoology
Class 11 and 12
- Class 11
- Class 12
Difficulty
- Easy
- Medium
- Hard
- New ideas
- 86 (96%)
- Use a figure
- 0
Question pattern
BIOLOGY 2018- Recall76%
- Concept12%
- Match the lists9%
- Application3%
Chapters
The 2018 Biology chapter split
All 35 Biology chapters asked, and which got more or less than usual: the chapter’s ten-year average per 180 questions.
Every chapter asked
- Biological Classification6 · usually 2.5
- Molecular Basis of Inheritance6 · usually 5.8
- Organisms and Populations6 · usually 3.0
- Anatomy of Flowering Plants4 · usually 2.4
- Biotechnology and its Applications4 · usually 2.3
- Cell: The Unit of Life4 · usually 3.5
- Environmental Issues4 · usually 1.8
- Human Reproduction4 · usually 3.2
- Principles of Inheritance and Variation4 · usually 4.1
- Animal Kingdom3 · usually 3.3
- Breathing and Exchange of Gases3 · usually 1.6
- Evolution3 · usually 2.7
- Human Health and Disease3 · usually 3.2
- Neural Control and Coordination3 · usually 1.5
- Plant Kingdom3 · usually 3.0
- Sexual Reproduction in Flowering Plants3 · usually 3.6
- Body Fluids and Circulation2 · usually 2.0
- Cell Cycle and Cell Division2 · usually 3.0
- Chemical Coordination and Integration2 · usually 2.3
- Digestion and Absorption2 · usually 1.4
- Excretory Products and their Elimination2 · usually 1.5
- Mineral Nutrition2 · usually 1.1
- Morphology of Flowering Plants2 · usually 2.7
- Respiration in Plants2 · usually 1.4
- Biodiversity and Conservation1 · usually 2.1
- Biomolecules1 · usually 3.1
- Biotechnology: Principles and Processes1 · usually 4.4
- Ecosystem1 · usually 1.9
- Locomotion and Movement1 · usually 1.8
- Microbes in Human Welfare1 · usually 1.6
- Photosynthesis in Higher Plants1 · usually 2.2
- Reproductive Health1 · usually 2.1
- Structural Organisation in Animals1 · usually 2.6
- The Living World1 · usually 0.9
- Transport in Plants1 · usually 1.2
Not asked this year: Plant Growth and Development.
More than usual
- Biological Classification+3.56 questions · usually 2.5
- Organisms and Populations+3.06 questions · usually 3.0
- Environmental Issues+2.24 questions · usually 1.8
- Biotechnology and its Applications+1.74 questions · usually 2.3
- Anatomy of Flowering Plants+1.64 questions · usually 2.4
- Neural Control and Coordination+1.53 questions · usually 1.5
- Breathing and Exchange of Gases+1.43 questions · usually 1.6
- Mineral Nutrition+0.82 questions · usually 1.1
Less than usual, or skipped
- Biotechnology: Principles and Processes−3.41 question · usually 4.4
- Plant Growth and Development−2.2Not asked · usually 2.2
- Biomolecules−2.11 question · usually 3.1
- Structural Organisation in Animals−1.61 question · usually 2.6
- Photosynthesis in Higher Plants−1.21 question · usually 2.2
- Biodiversity and Conservation−1.11 question · usually 2.1
- Reproductive Health−1.11 question · usually 2.1
- Cell Cycle and Cell Division−1.02 questions · usually 3.0
Every question
All 90 Biology questions of NEET 2018
Open any question for the full text, the options and the official answer. “New idea” means no earlier paper had tested it.
Botany55 questions
40 easy15 medium0 hard
- Q91
- Q92Double fertilization is
Sexual Reproduction in Flowering PlantsDouble FertilizationDouble Fertilization Concept
EasyOne-line MCQIdea asked in 2 papersAsked the year before
- Q93
- Q94
- Q95
- Q96
- Q97
- Q102
- Q104
- Q105
- Q106The experimental proof for semiconservative replication of DNA was first shown in a
Molecular Basis of InheritanceDNA ReplicationSemi-conservative Model
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q107
- Q108
- Q109
- Q110
- Q111Natality refers to
Organisms and PopulationsPopulation AttributesNatality (B) Definition
EasyOne-line MCQNew idea
- Q112
- Q113
- Q114Niche is
Organisms and PopulationsOrganism and Its EnvironmentHabitat and Niche
EasyOne-line MCQNew idea
- Q115
- Q116
- Q117
- Q118Which among the following is not a prokaryote ?
Biological ClassificationKingdom MoneraProkaryotic Cellular Organization
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q119
- Q120
- Q121Which of the following is true for nucleolus ?
Cell: The Unit of LifeNuclear OrganizationNucleolus and rRNA Synthesis
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q122Stomatal movement is not affected by
Transport in PlantsTranspiration PullStomatal Opening Mechanism
EasyOne-line MCQIdea asked in 2 papersAsked the year before
- Q123The stage during which separation of the paired homologous chromosomes begins is
Cell Cycle and Cell DivisionMeiotic Prophase IChiasmata Formation
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q124Stomata in grass leaf are
Anatomy of Flowering PlantsPlant Tissues and AnatomyEpidermal, Ground and Vascular Tissue Systems
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q125Secondary xylem and phloem in dicot stem are produced by
Anatomy of Flowering PlantsPlant Tissues and AnatomyCork Cambium and Periderm
EasyOne-line MCQNew ideaIdea asked in 2 papers
- Q126Pneumatophores occur in
Morphology of Flowering PlantsRoot MorphologyRespiratory Roots (Pneumatophores)
EasyOne-line MCQIdea asked in 2 papersAsked the year before
- Q127
- Q128
- Q129
- Q130Which of the following statements is correct ?
Plant KingdomPteridophytesHomospory vs Heterospory
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q131Select the wrong statement :
Biological ClassificationKingdom ProtistaProtozoan Classification
MediumOne-line MCQNew idea
- Q132
- Q133
- Q134Winged pollen grains are present in
Plant KingdomGymnospermsWinged Pollen of Pinus
MediumOne-line MCQNew idea
- Q135Which one is wrongly matched ?
Plant KingdomAlgae ClassificationRed Algae Gamete Motility
MediumOne-line MCQNew idea
- Q147
- Q152
- Q153
- Q154
- Q155
- Q156
- Q158
- Q159
- Q161
- Q170Which of these statements is incorrect ?
Respiration in PlantsTCA CycleMatrix Location of TCA Enzymes
MediumOne-line MCQNew idea
- Q171
- Q173
- Q174
- Q178
- Q180
Zoology35 questions
23 easy12 medium0 hard
- Q98
- Q99
- Q100
- Q101
- Q103
- Q136Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively ?
Breathing and Exchange of GasesMechanism of BreathingAsthma and Emphysema
EasyOne-line MCQNew ideaIdea asked in 3 papers
- Q137Match the items given in Column I with those in Column II and select the correct option given below : Column I | Column II a. Tricuspid…
Body Fluids and CirculationCardiac CycleAV Valve Locations
EasyMatch the listsNew ideaIdea asked in 2 papers
- Q138
- Q139
- Q140Which of the following is an amino acid derived hormone ?
Chemical Coordination and IntegrationEndocrine Glands and Hormone ActionChemical Classes of Hormones
MediumOne-line MCQNew ideaIdea asked in 3 papers
- Q141Which of the following hormones can play a significant role in osteoporosis ?
Chemical Coordination and IntegrationEndocrine Glands and Hormone ActionParathyroid Hormone and Calcium
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q142Which of the following structures or regions is incorrectly paired with its function ?
Neural Control and CoordinationNeural System and BrainHypothalamus and Limbic System
MediumOne-line MCQNew ideaIdea asked in 3 papers
- Q143
- Q144Hormones secreted by the placenta to maintain pregnancy are
Human ReproductionMenstrual CycleRole of hCG in Pregnancy
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q145The difference between spermiogenesis and spermiation is
Human ReproductionMale Reproductive SystemSpermiation Process
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q146The contraceptive 'SAHELI'
Reproductive HealthContraceptive MethodsSaheli Estrogen Receptor Modulation
MediumOne-line MCQNew idea
- Q148Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.
Animal KingdomChordate ClassesAves
EasyOne-line MCQNew ideaIdea asked in 3 papers
- Q149
- Q150
- Q151
- Q157Which part of poppy plant is used to obtain the drug “Smack” ?
Human Health and DiseaseHuman Diseases, Cancer and Drug AbuseOpioids
EasyOne-line MCQNew ideaIdea asked in 3 papers
- Q160
- Q162
- Q163
- Q164
- Q165
- Q166
- Q167
- Q168
- Q169
- Q172
- Q175
- Q176Which of the following is not an autoimmune disease ?
Human Health and DiseaseImmunity and Lymphoid OrgansAutoimmune Disorders
MediumOne-line MCQNew ideaIdea asked in 3 papers
- Q177Among the following sets of examples for divergent evolution, select the incorrect option :
EvolutionEvidence for EvolutionAnalogous Organs in Animals
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q179
Questions from the official NEET UG 2018 paper (CBSE). Chapter, topic and idea tags and difficulty are Lumi’s.
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