NEET UG 2023 · Biology · 100 questions
NEET 2023 Biology, question by question
The NEET 2023 Biology section had 100 questions from 34 chapters: 57 easy, 41 medium and 2 hard. 57% were easy, 4 points below the 2017–2026 average for Biology, and 45 (45%) came from Class 12. Molecular Basis of Inheritance had the most, 8 questions.
Updated 2026-10-08
- Questions
- 100
- 50% of the paper
- Chapters asked
- 34
- 2 usual chapters skipped
- Easy
- 57%
- 2017–2026 average 61%
- From Class 12
- 45%
- 2017–2026 average 49%
The section
What Biology asked in 2023
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
- 62 (62%)
- Use a figure
- 1
Question pattern
BIOLOGY 2023- Recall48%
- Match the lists18%
- Two statements11%
- Concept10%
- Assertion–reason8%
- Application3%
- Calculation1%
- Figure-based1%
Chapters
The 2023 Biology chapter split
All 34 Biology chapters asked, and which got more or less than usual: the chapter’s ten-year average per 180 questions. Counts are scaled to 180 questions so years compare fairly.
Every chapter asked
- Molecular Basis of Inheritance8 · usually 5.8
- Cell Cycle and Cell Division6 · usually 3.0
- Biotechnology: Principles and Processes5 · usually 4.4
- Principles of Inheritance and Variation5 · usually 4.1
- Biomolecules4 · usually 3.1
- Environmental Issues4 · usually 1.8
- Organisms and Populations4 · usually 3.0
- Structural Organisation in Animals4 · usually 2.6
- Anatomy of Flowering Plants3 · usually 2.4
- Animal Kingdom3 · usually 3.3
- Excretory Products and their Elimination3 · usually 1.5
- Human Health and Disease3 · usually 3.2
- Human Reproduction3 · usually 3.2
- Morphology of Flowering Plants3 · usually 2.7
- Photosynthesis in Higher Plants3 · usually 2.2
- Plant Growth and Development3 · usually 2.2
- Plant Kingdom3 · usually 3.0
- Reproductive Health3 · usually 2.1
- Sexual Reproduction in Flowering Plants3 · usually 3.6
- Transport in Plants3 · usually 1.2
- Biodiversity and Conservation2 · usually 2.1
- Body Fluids and Circulation2 · usually 2.0
- Cell: The Unit of Life2 · usually 3.5
- Chemical Coordination and Integration2 · usually 2.3
- Digestion and Absorption2 · usually 1.4
- Ecosystem2 · usually 1.9
- Locomotion and Movement2 · usually 1.8
- Mineral Nutrition2 · usually 1.1
- Neural Control and Coordination2 · usually 1.5
- Respiration in Plants2 · usually 1.4
- Biotechnology and its Applications1 · usually 2.3
- Breathing and Exchange of Gases1 · usually 1.6
- Evolution1 · usually 2.7
- Strategies for Enhancement in Food Production1 · usually 1.0
Not asked this year: Biological Classification, Microbes in Human Welfare.
More than usual
- Cell Cycle and Cell Division+2.46 questions · usually 3.0
- Environmental Issues+1.84 questions · usually 1.8
- Transport in Plants+1.53 questions · usually 1.2
- Molecular Basis of Inheritance+1.48 questions · usually 5.8
- Excretory Products and their Elimination+1.23 questions · usually 1.5
- Structural Organisation in Animals+1.14 questions · usually 2.6
- Mineral Nutrition+0.72 questions · usually 1.1
- Organisms and Populations+0.64 questions · usually 3.0
Less than usual, or skipped
- Biological Classification−2.5Not asked · usually 2.5
- Evolution−1.81 question · usually 2.7
- Cell: The Unit of Life−1.72 questions · usually 3.5
- Microbes in Human Welfare−1.6Not asked · usually 1.6
- Biotechnology and its Applications−1.41 question · usually 2.3
- Sexual Reproduction in Flowering Plants−0.93 questions · usually 3.6
- Breathing and Exchange of Gases−0.71 question · usually 1.6
- Animal Kingdom−0.63 questions · usually 3.3
Every question
All 100 Biology questions of NEET 2023
Open any question for the full text, the options and the official answer. “New idea” means no earlier paper had tested it.
Botany50 questions
25 easy23 medium2 hard
- Q101
- Q102
- Q103Which micronutrient is required for splitting of water molecule during photosynthesis?
Mineral NutritionManganese in Photolysis of Water
EasyOne-line MCQIdea asked in 3 papersAsked the year before
- Q104
- Q105The thickness of ozone in a column of air in the atmosphere is measured in terms of :
Environmental IssuesOzone DepletionDobson Units
EasyOne-line MCQIdea asked in 2 papers
- Q106
- Q107
- Q108
- Q109
- Q110
- Q111
- Q112
- Q113
- Q114
- Q115The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
Cell Cycle and Cell DivisionMeiotic Prophase IRecombination Nodule Identification
EasyOne-line MCQIdea asked in 2 papersAsked the year before
- Q116
- Q117
- Q118Unequivocal proof that DNA is the genetic material was first proposed by
Molecular Basis of InheritanceDNA Double HelixHershey-Chase Experiment
EasyOne-line MCQIdea asked in 2 papers
- Q119
- Q120What is the function of tassels in the corn cob?
Sexual Reproduction in Flowering PlantsPollination MechanismsAnemophily Floral Adaptations
MediumOne-line MCQIdea asked in 2 papers
- Q121
- Q122In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
Sexual Reproduction in Flowering PlantsDouble FertilizationPloidy Level Calculation
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q123
- Q124
- Q125
- Q126
- Q127
- Q128
- Q129
- Q130Identify the correct statements : A. Detrivores perform fragmentation. B. The humus is further degraded by some microbes during…
EcosystemEnergy Flow in EcosystemDetritivores vs. Decomposers
MediumOtherIdea asked in 2 papersAsked the year before
- Q131Among eukaryotes, replication of DNA takes place in -
Cell Cycle and Cell DivisionMitotic DivisionEvents of G1, S and G2
EasyOne-line MCQIdea asked in 3 papers
- Q132
- Q133
- Q134
- Q135Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Late wood has fewer…
Anatomy of Flowering PlantsPlant Tissues and AnatomySpring Wood, Autumn Wood and Annual Rings
MediumAssertion–reasonIdea asked in 3 papersAsked the year before
- Q136
- Q137
- Q138
- Q139
- Q140Which of the following combinations is required for chemiosmosis?
Photosynthesis in Higher PlantsPhotosynthetic Light ReactionChemiosmotic Hypothesis
MediumOne-line MCQIdea asked in 2 papersAsked the year before
- Q141
- Q142
- Q143
- Q144
- Q145
- Q146How many different proteins does the ribosome consist of?
Molecular Basis of InheritanceGenetic Code and TranslationRibosome Structure and Role
HardOne-line MCQIdea asked in 2 papers
- Q147
- Q148
- Q149Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
BiomoleculesBiomolecule StructureTemperature and Competitive Inhibition
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q150
Zoology50 questions
32 easy18 medium0 hard
- Q151
- Q152
- Q153
- Q154
- Q155
- Q156
- Q157
- Q158
- Q159
- Q160
- Q161
- Q162
- Q163
- Q164
- Q165
- Q166
- Q167Radial symmetry is NOT found in adults of phylum ________.
Animal KingdomAnimal Kingdom: Basis of Classification and Non-chordatesBody Symmetry
MediumOne-line MCQNew ideaIdea asked in 2 papers
- Q168
- Q169
- Q170
- Q171Vital capacity of lung is ________.
Breathing and Exchange of GasesMechanism of BreathingPulmonary Capacities
EasyOne-line MCQIdea asked in 3 papers
- Q172
- Q173
- Q174
- Q175
- Q176
- Q177Given below are two statements: Statement I: Electrostatic precipitator is most widely used in thermal power plant. Statement II:…
Environmental IssuesAir Pollution Control and Waste ManagementElectrostatic Precipitator and Scrubber
EasyTwo statementsIdea asked in 2 papersAsked the year before
- Q178
- Q179
- Q180
- Q181
- Q182
- Q183
- Q184
- Q185
- Q186
- Q187
- Q188
- Q189Select the correct statements with reference to chordates. A. Presence of a mid-dorsal, solid and double nerve cord. B. Presence of closed…
Animal KingdomChordate ClassesFundamental Chordate Features
MediumOtherIdea asked in 6 papersAsked the year before
- Q190
- Q191
- Q192
- Q193
- Q194The unique mammalian characteristics are:
Animal KingdomChordate ClassesMammalia
EasyOne-line MCQIdea asked in 2 papers
- Q195
- Q196
- Q197
- Q198
- Q199Match List I with List II. List I | List II A. Mast cells | I. Ciliated epithelium B. Inner surface of bronchiole | II. Areolar connective…
Structural Organisation in AnimalsAnimal TissuesCiliated Epithelium Location and Function
EasyMatch the listsIdea asked in 3 papersAsked the year before
- Q200
Questions from the official NEET UG 2023 paper (NTA). Chapter, topic and idea tags and difficulty are Lumi’s.
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