NEET UG 2017 · Biology · 90 questions

NEET 2017 Biology, question by question

The NEET 2017 Biology section had 90 questions from 36 chapters: 52 easy, 38 medium and 0 hard. 58% were easy, 3 points below the 2017–2026 average for Biology, and 41 (46%) came from Class 12. Molecular Basis of Inheritance had the most, 6 questions.

Updated 2026-10-08

Questions: 90; 51% of the paper
Chapters asked: 36; 1 usual chapter skipped
Easy: 58%; 2017–2026 average 61%
From Class 12: 46%; 2017–2026 average 49%

The section

What Biology asked in 2017

Class balance, difficulty and the form of the questions. Bars below compare Biology across every paper from 2017–2026.

Botany and Zoology

5733

Botany
Zoology

Class 11 and 12

4941

Class 11
Class 12

Difficulty

5238

Easy
Medium
Hard

New ideas: –
Use a figure: 0

Question pattern

BIOLOGY 2017

Recall71%
Concept20%
Application6%
Calculation2%
Match the lists1%

Chapters

The 2017 Biology chapter split

All 36 Biology chapters asked, and which got more or less than usual: the chapter’s ten-year average per 180 questions.

Every chapter asked

Molecular Basis of Inheritance6 · usually 5.8
Sexual Reproduction in Flowering Plants6 · usually 3.6
Biotechnology: Principles and Processes5 · usually 4.4
Principles of Inheritance and Variation5 · usually 4.1
Biological Classification4 · usually 2.5
Morphology of Flowering Plants4 · usually 2.7
Plant Kingdom4 · usually 3.0
Anatomy of Flowering Plants3 · usually 2.4
Animal Kingdom3 · usually 3.3
Biodiversity and Conservation3 · usually 2.1
Body Fluids and Circulation3 · usually 2.0
Digestion and Absorption3 · usually 1.4
Neural Control and Coordination3 · usually 1.5
Reproductive Health3 · usually 2.1
Biomolecules2 · usually 3.1
Cell Cycle and Cell Division2 · usually 3.0
Cell: The Unit of Life2 · usually 3.5
Chemical Coordination and Integration2 · usually 2.3
Ecosystem2 · usually 1.9
Excretory Products and their Elimination2 · usually 1.5
Human Health and Disease2 · usually 3.2
Human Reproduction2 · usually 3.2
Locomotion and Movement2 · usually 1.8
Microbes in Human Welfare2 · usually 1.6
Organisms and Populations2 · usually 3.0
Photosynthesis in Higher Plants2 · usually 2.2
Transport in Plants2 · usually 1.2
Breathing and Exchange of Gases1 · usually 1.6
Environmental Issues1 · usually 1.8
Evolution1 · usually 2.7
Mineral Nutrition1 · usually 1.1
Plant Growth and Development1 · usually 2.2
Respiration in Plants1 · usually 1.4
Strategies for Enhancement in Food Production1 · usually 1.0
Structural Organisation in Animals1 · usually 2.6
The Living World1 · usually 0.9

Not asked this year: Biotechnology and its Applications.

More than usual

Sexual Reproduction in Flowering Plants+2.56 questions · usually 3.6
Digestion and Absorption+1.63 questions · usually 1.4
Neural Control and Coordination+1.63 questions · usually 1.5
Biological Classification+1.54 questions · usually 2.5
Morphology of Flowering Plants+1.44 questions · usually 2.7
Plant Kingdom+1.14 questions · usually 3.0
Body Fluids and Circulation+1.03 questions · usually 2.0
Principles of Inheritance and Variation+0.95 questions · usually 4.1

Less than usual, or skipped

Biotechnology and its Applications−2.3Not asked · usually 2.3
Evolution−1.71 question · usually 2.7
Structural Organisation in Animals−1.61 question · usually 2.6
Cell: The Unit of Life−1.52 questions · usually 3.5
Plant Growth and Development−1.21 question · usually 2.2
Human Health and Disease−1.22 questions · usually 3.2
Human Reproduction−1.22 questions · usually 3.2
Biomolecules−1.12 questions · usually 3.1

Every question

All 90 Biology questions of NEET 2017

Open any question for the full text, the options and the official answer. “New idea” means no earlier paper had tested it.

Subject

Difficulty

Idea

Find

90 of 90 questions

Botany57 questions

30 easy27 medium0 hard

Q91
Double fertilization in exhibited by
Sexual Reproduction in Flowering Plants Double Fertilization Double Fertilization Concept
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q92
Which of the following are found in extreme saline conditions ?
Biological Classification Kingdom Monera Types of Extremophilic Archaebacteria
EasyOne-line MCQNew idea
Q93
Select the mismatch :
Mineral Nutrition Nitrogen Fixation Non-Legume Symbiotic Fixation
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q95
Attractants and rewards are required for :
Sexual Reproduction in Flowering Plants Pollination Mechanisms Biotic Pollination
EasyOne-line MCQNew idea
Q96
Which of the following is made up of dead cells ?
Anatomy of Flowering Plants Plant Tissues and Anatomy Parenchyma, Collenchyma and Sclerenchyma
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q100
The final proof for DNA as the genetic material came from the experiments of :
Molecular Basis of Inheritance DNA Double Helix Hershey-Chase Experiment
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q101
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and…
Biological Classification Kingdom Monera Mycoplasma Characteristics
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q102
Which of the following options gives the correct sequence of events during mitosis ?
Cell Cycle and Cell Division Mitotic Division Metaphase Plate Alignment
MediumOne-line MCQNew idea
Q103
Which one of the following statements is correct with reference to enzymes ?
Biomolecules Biomolecule Structure Holoenzyme Components
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q104
During DNA replication, Okazaki fragments are used to elongate :
Molecular Basis of Inheritance DNA Replication Leading/Lagging Strands
MediumOne-line MCQNew idea
Q105
Which of the following are not polymeric ?
Biomolecules Biomolecule Structure Lipids in Acid-Insoluble Pool
EasyOne-line MCQNew idea
Q106
The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as :
Biodiversity and Conservation Conservation Strategies Biosphere Reserve Zonation
EasyOne-line MCQNew idea
Q107
A dioecious flowering plant prevents both :
Sexual Reproduction in Flowering Plants Pollination Mechanisms Dioecious Plants: Papaya and Date Palm
MediumOne-line MCQNew idea
Q111
Spliceosomes are not found in cells of :
Molecular Basis of Inheritance Transcription Process Spliceosome Mechanism
MediumOne-line MCQNew idea
Q112
An example of colonial alga is :
Plant Kingdom Algae Classification Algal Forms and Examples
EasyOne-line MCQNew idea
Q113
Which of the following represents order of 'Horse' ?
The Living World Taxonomic Hierarchy Orders of Class Mammalia
MediumOne-line MCQNew idea
Q114
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP ?
Cell: The Unit of Life Mitochondria and Plastids Energy Transformation Role
EasyOne-line MCQNew idea
Q116
Mycorrhizae are the example of :
Organisms and Populations Population Interactions Mutualism Concept (+/+)
EasyOne-line MCQNew idea
Q117
Viroids differ from viruses in having :
Biological Classification Viruses, Viroids, Prions and Lichens Viroids
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q118
Root hairs develop from the region of :
Morphology of Flowering Plants Root Morphology Exclusive Zone of Absorption
EasyOne-line MCQNew idea
Q119
Coconut fruit is a :
Morphology of Flowering Plants Flower Structure Fruit Types
MediumOne-line MCQNew idea
Q120
Plants which produce characteristic pneumatophores and show vivipary belong to :
Morphology of Flowering Plants Root Morphology Respiratory Roots (Pneumatophores)
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q121
Which one of the following is related to Ex-situ conservation of threatened animals and plants ?
Biodiversity and Conservation Conservation Strategies Wildlife Safari Parks Classification
EasyOne-line MCQNew idea
Q122
Select the mismatch :
Plant Kingdom Gymnosperms Monoecious and Dioecious Plant Groups
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q123
Which of the following facilitates opening of stomatal aperture ?
Transport in Plants Transpiration Pull Stomatal Opening Mechanism
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q124
The association of histone H1 with a nucleosome indicates :
Molecular Basis of Inheritance DNA Double Helix H1 Linker Histone
MediumOne-line MCQNew idea
Q127
Which ecosystem has the maximum biomass ?
Ecosystem Ecosystem Structure, Decomposition and Nutrient Cycling Productivity and Biomass of Ecosystems
EasyOne-line MCQNew idea
Q128
A disease caused by an autosomal primary non-disjunction is
Principles of Inheritance and Variation Sex Determination and Genetic Disorders Aneuploidy and Non-disjunction
EasyOne-line MCQNew idea
Q129
Life cycle of Ectocarpus and Fucus respectively are :
Plant Kingdom Algae Classification Haplontic, Diplontic and Haplodiplontic Life Cycles
MediumOne-line MCQNew idea
Q130
If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the…
Molecular Basis of Inheritance Genetic Code and Translation Frameshift Mutations and the Reading Frame
MediumNumericalNew ideaIdea asked in 2 papers
Q133
Presence of plants arranged into well defined vertical layers depending on their height can be seen best in :
Ecosystem Ecosystem Structure, Decomposition and Nutrient Cycling Vertical Stratification
EasyOne-line MCQNew idea
Q134
The genotypes of a Husband and Wife are $I^AI^B$ and $I^Ai$ . Among the blood types of their children, how many different genotypes and…
Principles of Inheritance and Variation Mendelian Inheritance ABO Blood Group Inheritance
MediumOne-line MCQNew ideaIdea asked in 3 papers
Q135
Zygotic meiosis is characteristic of :
Plant Kingdom Algae Classification Haplontic, Diplontic and Haplodiplontic Life Cycles
MediumOne-line MCQNew idea
Q136
Which of the following is correctly matched for the product produced by them ?
Microbes in Human Welfare Microbe-Product Matching
MediumOne-line MCQNew ideaIdea asked in 5 papers
Q138
Which statement is wrong for Krebs' cycle ?
Respiration in Plants TCA Cycle GTP/ATP Synthesis
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q140
Which of the following RNAs should be most abundant in animal cell ?
Molecular Basis of Inheritance Transcription Process Relative Abundance of RNA Types
MediumOne-line MCQNew idea
Q142
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ?
Photosynthesis in Higher Plants Calvin and Hatch-Slack Cycles Light Saturation Points C3 vs C4
MediumOne-line MCQNew idea
Q143
Asymptote in a logistic growth curve is obtained when :
Organisms and Populations Population Attributes Verhulst-Pearl Logistic Growth Equation
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q146
Functional megaspore in an angiosperm develops into :
Sexual Reproduction in Flowering Plants Anther, Ovule and Embryo Sac Development Megasporogenesis and Functional Megaspore
EasyOne-line MCQNew idea
Q147
Among the following characters, which one was not considered by Mendel in his experiments on pea ?
Principles of Inheritance and Variation Mendelian Inheritance Mendel's Seven Contrasting Traits
EasyOne-line MCQNew ideaIdea asked in 3 papers
Q150
In Bougainvillea thorns are the modifications of :
Morphology of Flowering Plants Stem Modifications Stem Thorns in Citrus and Bougainvillea
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q151
Which one from those given below is the period for Mendel's hybridization experiments ?
Principles of Inheritance and Variation Mendelian Inheritance Mendel's Experiment Timeline
EasyOne-line MCQNew idea
Q153
Which one of the following statements is not valid for aerosols ?
Environmental Issues Air Pollution Control and Waste Management Particulates and Aerosols
MediumOne-line MCQNew idea
Q155
Homozygous purelines in cattle can be obtained by :
Strategies for Enhancement in Food Production Plant and Animal Breeding Inbreeding and Pure Lines
MediumOne-line MCQNew idea
Q156
The vascular cambium normally gives rise to :
Anatomy of Flowering Plants Plant Tissues and Anatomy Products of Vascular Cambium
MediumOne-line MCQNew idea
Q158
Fruit and leaf drop at early stages can be prevented by the application of :
Plant Growth and Development Plant Growth Regulators Auxin's Dual Role in Abscission
EasyOne-line MCQNew idea
Q164
Phosphoenol pyruvate (PEP) is the primary $\mathrm{CO_2}$ acceptor in
Photosynthesis in Higher Plants Calvin and Hatch-Slack Cycles Primary CO2 Acceptors Comparison
EasyOne-line MCQNew idea
Q165
The morphological nature of the edible part of coconut is :
Sexual Reproduction in Flowering Plants Double Fertilization Post-Fertilization Changes
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q166
Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a…
Cell Cycle and Cell Division Mitotic Division Anaphase Promoting Complex (APC)
MediumOne-line MCQNew idea
Q170
Alexander Von Humbolt described for the first time :
Biodiversity and Conservation Patterns and Estimates of Biodiversity Species-Area Relationship
MediumOne-line MCQNew idea
Q173
Which of the following components provides sticky character to the bacterial cell ?
Cell: The Unit of Life Cell Wall Structure Bacterial Cell Envelope
EasyOne-line MCQNew idea
Q174
DNA replication in bacteria occurs :
Biological Classification Kingdom Monera Bacterial Reproduction via Fission
MediumOne-line MCQNew idea
Q176
Which of the following in sewage treatment removes suspended solids ?
Microbes in Human Welfare Sewage Treatment and Biogas
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q177
The water potential of pure water is :
Transport in Plants Water Potential Standard Conditions for Pure Water
EasyOne-line MCQNew idea
Q178
Identify the wrong statement in context of heartwood :
Anatomy of Flowering Plants Plant Tissues and Anatomy Heartwood versus Sapwood
MediumOne-line MCQNew ideaIdea asked in 3 papers
Q179
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
Principles of Inheritance and Variation Sex Determination and Genetic Disorders Thalassaemia versus Sickle-cell Anaemia
MediumOne-line MCQNew idea
Q180
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by :
Sexual Reproduction in Flowering Plants Pollination Mechanisms Anemophily Floral Adaptations
EasyOne-line MCQNew ideaIdea asked in 2 papers

Zoology33 questions

22 easy11 medium0 hard

Q94
What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ?
Biotechnology: Principles and Processes Restriction Enzymes Agarose Sieving Effect
EasyOne-line MCQNew idea
Q97
Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme ?
Digestion and Absorption Digestive Enzymes Paneth Cells and Lysozyme
EasyOne-line MCQNew idea
Q98
Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature ? (a) They do not…
Body Fluids and Circulation Blood Composition, Groups and Coagulation Erythrocytes
MediumOtherNew idea
Q99
The hepatic portal vein drains blood to liver from
Body Fluids and Circulation Cardiac Cycle Double Circulation and Hepatic Portal System
EasyOne-line MCQNew idea
Q108
A temporary endocrine gland in the human body is :
Human Reproduction Female Reproductive System Corpus Luteum Formation
EasyOne-line MCQNew idea
Q109
Match the following sexually transmitted diseases (Column - I) with their causative agent (Column - II) and select the correct option.…
Reproductive Health Reproductive Health and STIs Pathogens of STIs
MediumMatch the listsNew idea
Q110
Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible…
Human Health and Disease Immunity and Lymphoid Organs Cell-mediated Immunity and Graft Rejection
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q115
The process of separation and purification of expressed protein before marketing is called :
Biotechnology: Principles and Processes Cloning Vectors Downstream Processing
EasyOne-line MCQNew idea
Q125
DNA fragments are :
Biotechnology: Principles and Processes Restriction Enzymes DNA Migration to Anode
EasyOne-line MCQNew idea
Q126
Capacitation occurs in :
Human Reproduction Pregnancy, Embryonic Development and Parturition Fertilisation and Capacitation
EasyOne-line MCQNew idea
Q131
The pivot joint between atlas and axis is a type of :
Locomotion and Movement Skeletal Joints Hinge and Pivot Joints
EasyOne-line MCQNew idea
Q132
A gene whose expression helps to identify transformed cell is known as :
Biotechnology: Principles and Processes Cloning Vectors Selectable Markers
EasyOne-line MCQNew idea
Q137
Frog's heart when taken out of the body continues to beat for sometime. Select the best option from the following statements. (a) Frog is…
Body Fluids and Circulation Cardiac Cycle Myogenic Heart Nature
MediumOtherNew idea
Q139
In case of poriferans, the spongocoel is lined with flagellated cells called
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordates Porifera
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q141
Which among these is the correct combination of aquatic mammals ?
Animal Kingdom Chordate Classes Mammalia
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q144
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and…
Locomotion and Movement Human Skeleton and Musculoskeletal Disorders Ribs and Sternum
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q145
The DNA fragments separated on an agarose gel can be visualised after staining with :
Biotechnology: Principles and Processes Restriction Enzymes Ethidium Bromide Intercalation
EasyOne-line MCQNew idea
Q148
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of :
Breathing and Exchange of Gases Mechanism of Breathing Residual Volume Keeps Alveoli Open
EasyOne-line MCQNew idea
Q149
GnRH, a hypothalamic hormone, needed in reproduction, acts on
Chemical Coordination and Integration Endocrine Glands and Hormone Action Hypothalamus and Posterior Pituitary
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q152
Good vision depends on adequate intake of carotene-rich food. Select the best option from the following statements. (a) Vitamin A…
Neural Control and Coordination Structure of Eye Rhodopsin and Vitamin A Link
MediumOtherNew idea
Q154
A decrease in blood pressure/volume will not cause the release of :
Excretory Products and their Elimination Urine Formation ANF Opposition to RAAS
MediumOne-line MCQNew idea
Q157
Which of the following statements is correct ?
Excretory Products and their Elimination Urine Formation Ascending Limb Permeability
EasyOne-line MCQNew idea
Q159
A baby boy aged two years is admitted to play school and passes through a dental check - up. The dentist observed that the boy had twenty…
Digestion and Absorption Digestive Enzymes Dental Formula and Milk Teeth
MediumOne-line MCQNew idea
Q160
An important characteristic that Hemichordates share with Chordates is :
Animal Kingdom Animal Kingdom: Basis of Classification and Non-chordates Hemichordata
MediumOne-line MCQNew idea
Q161
Artificial selection to obtain cows yielding higher milk output represents
Evolution Natural Selection Directional Selection Curve Dynamics
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q162
Select the correct route for the passage of sperms in male frogs :
Structural Organisation in Animals Frog Morphology Sperm Pathway Post-Bidder's Canal
MediumOne-line MCQNew idea
Q163
Which of the following options best represents the enzyme composition of pancreatic juice ?
Digestion and Absorption Digestive Enzymes Pancreatic Juice Enzyme Roster
EasyOne-line MCQNew idea
Q167
MALT constitutes about ________ percent of the lymphoid tissue in human body.
Human Health and Disease Immunity and Lymphoid Organs Mucosa-associated Lymphoid Tissue
MediumOne-line MCQNew idea
Q168
Receptor sites for neurotransmitters are present on :
Neural Control and Coordination Neural System and Brain Neurotransmitter Receptors
EasyOne-line MCQNew idea
Q169
Hypersecretion of Growth Hormone in adults does not cause further increase in height, because
Chemical Coordination and Integration Endocrine Glands and Hormone Action Endocrine Disorders
MediumOne-line MCQNew ideaIdea asked in 5 papers
Q171
Myelin sheath is produced by :
Neural Control and Coordination Neural System and Brain Myelin Sheath Formation
EasyOne-line MCQNew idea
Q172
In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation ?
Reproductive Health Assisted Reproductive Tech Artificial Insemination
MediumOne-line MCQNew idea
Q175
The function of copper ions in copper releasing IUD's is :
Reproductive Health Contraceptive Methods Copper IUD Mechanism
EasyOne-line MCQNew idea

Questions from the official NEET UG 2017 paper (CBSE). Chapter, topic and idea tags and difficulty are Lumi’s.

Biology in every NEET paper

NEET 2017 Physics NEET 2017 Chemistry The whole 2017 paper Biology across ten years