If you want to score good marks in the biology section of NEET 2021, it is necessary to know what chapters are important for the exam and to know what weightage each chapter carries.
As soon as you know which chapters are important, you can dedicate more time to them.
Do or die chapters in biology indicate which chapters need more concentration to be studied and, therefore, hold more weight in the NEET examination.
For those seeking admission to MBBS and BDS, the NTA is responsible for organizing the NEET UG exam. The NTA will also set the pattern for NEET. In order to understand the structure of the NEET exam paper, it is advisable for candidates to go through the exam pattern completely.
Biology is the most important section of the NEET Exam because it is a medical entrance exam. Both zoology and botany are included in the question paper.
The following table summarizes the questions that appeared in the biology part in each of the 16 previous AIPMT/NEET exams completed between 2008 and 2020 because it is crucial to analyze the past year’s trends.
In this way, you will be able to get an idea of the pattern of questions that have been asked from various topics. It is crucial to have knowledge of important topics in zoology and botany as this will strengthen the preparation for the test.
Most Important Chapters in NEET Chemistry [Zoology]:
Animal Kingdom
Topic Name
Number of Questions
Phylum Arthropoda
10
Study of Aves and Mammals
9
Phylum Annelida
8
Phylum Ctenophora and Platyhelminthes
8
Comparative study of Cartilagenous and Bony Fishes
6
Phylum Coelenterata
6
General Intro of Vertibrates and Agnatha
5
Phylum Aschelminthes
5
Phylum Mollusca
5
Phylum Porifera
3
Study of Amphibians
3
Phylum Chordata
2
Basis of Classification
1
Phylum Hemichordata
1
Study of Reptilia
1
Total number of questions
Structural Organisation in Animals
Topic Name
Number of Questions
Cockroach: Intro and External Morphology
5
Simple Epithelium
5
Cardiac Muscle and Smooth Muscle
4
Connective Tissue
4
Glandular Epithelium and Cell Junction
4
Cockroach: Head and Mouth Parts
3
Compound and specialised Epithelium
3
Cockroach : Excretory System
2
Cockroach : Digestive system
1
Cockroach : Female Reproductive System
1
Cockroach : Structure of Thorax
1
Cockroach : Male Reproductive System
1
Nervous Tissue
1
Cockroach: Respiratory System
0
Total number of questions
35
Biomolecules
Topic Name
Number of Questions
Carbohydrates
5
Enzyme Inhibition: Introduction
4
Enzyme Cofactors
4
Carbohydrates: Cellulose, Chitin, Inulin and Agar
3
Mechanism of Enzymes
3
Different Amino Acids
2
Enzymes
2
Lipids
2
Lipids: Fatty Acids
2
Amino Acids
1
Carbohydrates: Introduction
1
Carbohydrates: Starch and Glycogen
1
Element Analysis
1
Enzyme Classification
1
Introduction
1
Lipids: Glycerolipids, Phospholipids and Glycerol
1
Properties of Enzymes
1
Proteins
1
Secondary Metabolites
1
Structural Organisation
1
Double Helix Watson and Crick
4
Total number of questions
42
Digestion and Absorption
Topic Name
Number of Questions
Gastric Secretions
11
Absorption
3
Alimentary Canal : Oral Cavity and Teeth
3
Histology of Gut
3
Intestinal Secretions
3
Pancreatic Secretions
2
Protein Energy Malnutrition
2
Absorption: General Adaptations
1
Bile
1
Movement of Food in Gut
1
Peristalsis: Gland in Alimentary Canal
1
Total number of questions
31
Breathing and Exchange of Gases
Topic Name
Number of Questions
Respiratory system: Transport of Gases
12
Respiratory Disorders
7
Respiratory system: Pulmonary Volumes and Capacities
6
Respiratory system: Pulmonary Ventilation
4
Respiratory system: Exchange of Gases
3
Respiratory system: Trachea and Basic Anatomy of Lung
2
Total number of questions
34
Body Fluids and Circulation
Topic Name
Number of Questions
Blood: General Description and RBC
13
Human Heart: Double Circulation
9
Blood: Blood Group (A,B,O)
7
ECG and Coronary Artery Disease
4
Human Heart: Cardiac Cycle
4
Blood: Blood Clotting
3
Rhythmic Excitation of Human Heart
3
Atherosclerosis, Hypertension and Ventricular Fibrillation
2
Blood: White Blood Cells
2
Blood; Blood Group
1
Human Heart: Gross Anatomy
1
Lymph
1
Regulation of Cardiac Activity
1
Total number of questions
51
Excretory Products and their Elimination
Topic Name
Number of Questions
Autoregulation of GFR
8
Formation of Urine
6
Nitrogenous Excretory Products
6
CRF and Haemodialysis
3
Human Kidney: Functions
3
Concentration of Urine
2
Formation of Urine: Ultrafiltration
2
Micturition Reflex
2
Human Kidney: Location and Cut Section
1
Nephron
1
Total number of questions
34
Locomotion and Movement
Topic Name
Number of Questions
Sternum and Ribs
5
Synovial Joint
5
Disorders of Muscular and Skeletal System
3
Muscle Contraction: Other Considerations
3
Appendicular Skeleton: Girdle
2
Fibrous and Cartilaginous Joints
2
Sliding Filament Theory
2
Excitation Contraction Coupling
1
Skeletal Muscle: Myofilaments
1
Skeletal Muscle: Sarcomere
1
Total number of questions
25
Neural Control and Coordination
Topic Name
Number of Questions
Basic Anatomy of Human Eye
9
Synapse
6
Human Eye: Adaptation
5
Nervous System
5
Diencephalon
4
Autonomic Nervous System
3
Inner Ear: Vestibular Apparatus
3
Hind and Mid Brain
2
Origin of Resting Membrane Potential
2
Outer and Middle Ear
2
Action Potential
1
Cerebrum, EEG and Sleep
1
Human Eye: Accommodation
1
Inner Ear; Cochlea
1
Motor Functions of Spinal Cord
1
Neuroanatomy
1
Smell and Taste
1
Total number of questions
48
Chemical Coordination and Integration
Topic Name
Number of Questions
Adrenal Medulla
6
Mechanism of Hormone Action
6
Parathyroid
6
Prolactin and Posterior Pituitary
6
Thyroid Gland
6
Gonadotropin and Gonadol hormones
5
Adenohypophysics and Hypothalamus
4
Human Growth Hormone
3
Pituitary and Hypothalamus
3
Adrenal Cortex: Cortisol
2
Pancreas
2
Pineal gland
2
Hormones General Consideration
1
Misc. Hormones
1
Total number of questions
53
Human Reproduction
Topic Name
Number of Questions
Fertilization
8
fetal Development and Parturition
7
Menstrual Cycle: Luteal Phase
7
Seminiferous Tubules and Spermatogenesis
7
Introduction to Menstrual Cycle
6
Embryonic Development Till Gastrulation
5
Male Reproductive Duct System
5
Spermiogensis/Sperm Structure/Hormonal Regulation
5
Male Reproductive System
4
Ovary
4
Implantation
3
Basic Anatomy of Testis
1
Female Reproductive System
1
Semen and Male Fertility
1
Total number of questions
64
Reproductive Health
Topic Name
Number of Questions
Hormonal Contraceptives, Emergency Contraception and Terminal Methods
9
Infertility
8
Contraception: Barrier Methods and IUDs
7
Sexually Transmitted Infections
6
Contraception: Natural Methods
3
Introduction
3
Medical Termination of Pregnancy
2
Total number of questions
38
Evolution
Topic Name
Number of Questions
Concept of Oraganic Evolution: Evidence
14
Types of natural selection
6
Definition and Types of Evolution
5
Evolution Prior to Ape man
5
Hardy Weinberg Law
5
Darwin’s Theory
4
Origin of Life: Chemmical Evolution
4
Theory of Evolution and Lamarckism
4
Concept of isolation
2
Concept of speciation
2
Differenece between drift and selection
2
Evolution of Homo sapiens
2
Hugo de Vries theory of evolution
2
Urey and Miller experiment
2
Additional theories of Darwin’s
1
Embryological Evidence of Evolution
1
Genetic Basis of adaptation
1
Introduction to human evolution
1
Other theories of origin of life
1
Palentological Evidences of Evolution
1
Population Genetics
1
Sources of Variation
1
Total number of questions
67
Human Health and Disease
Topic Name
Number of Questions
Details of immunity
12
Allergies and Autoimmunity
8
Drugs and Alcohol abuse
8
AIDS
7
Human Immune system
7
Active and Passive immunity
4
Introduction
4
Cancer
3
Treatment and Life cycle of Malaria
3
Typhoid Fever
3
Ascariasis and Filariasis
2
Common cold and Malaria introduction
2
Pneumonia and Related questions
2
Amoebiasis
1
Fungal infection and concept of immunity
1
Total number of questions
67
Biotechnology Principles and Processes
Topic Name
Questions of Numbers
Tools: Enzymes
12
Tools: Vectors
10
Process of biotech
6
Polymerase Chain Reaction: PCR
5
Restriction enzymes – Main enzymes
5
Sepration and isolation of DNA fragments
5
Selectable Markers
4
Large Scale Production
3
Transforming Plant and Animal cell
2
Bioreactors/Downstream processing
1
Host and Desired DNA
1
Intro and History
1
Obtaining a copy of gene from donor DNA
1
Total number of questions
56
Biotechnology and its Applications
Topic Name
Number of Questions
Bt crops
11
Interference RNA tech
7
Other GM crops
6
Ethical issues
5
Med applications and Humulin
5
Intro to Agri Applications
4
Gene therapy
3
Transgenic Microbes and Animals
3
Molecular Diagnosis
1
Total number of questions
45
Most Important Chapters in NEET Chemistry [Botany]:
The Living World
Topic Name
Number of Questions
Taxonomy
10
Taxonomical Aids
4
Metabolism and Consciousness as Criterion for Being Living
2
Introduction and Growth as Criterion for Being Living
1
Reproduction as Criterion for Being Living
1
Total number of questions
18
Biological Classification
Topic Name
Number of Questions
Kingdom Monera: Bacterial Classification
15
Virus, Viroids and Prions
14
Kingdom Fungi: Introduction
7
Kingdom Monera: Introduction
6
Kingdom Monera: Surface Appendages
5
Different Classification System
4
Kingdom Fungi: Ascomycetes
4
Kingdom Fungi: Basidiomycetes
4
Kingdom Fungi: Zygomycetes
4
Kingdom Monera: Bacterial Cell Structure
4
Kingdom Monera: Blue Green Algae
4
Kingdom Monera: Actinomycetes, Mycoplasma
4
Kingdom Protista: Chrysophytes
4
Kingdom Protista: Introductions
3
Kingdom Protista: Slime Moulds
2
Lichens
2
Protozoa
2
Kingdom Fungi: Deuteromycetes
1
Kingdom Monera: Bacterial Life Process
1
Total number of questions
90
Plant Kingdom
Topic Name
Number of Questions
Algae
12
Bryophytes
8
Examples of Gymnosperms
5
Pteridophytes: Heterospory
5
General Account of Angiosperms
4
Gymnosperms
4
Life Cycle Patterns in Plants
4
Pheophyceae:Brown Algae
4
Classification System
3
Bryophytes (Liveworts)
2
Chlorophyceae: Green Algae
2
Classification of Pteridophytes
3
Rhodophyceae: Red Algae and Importance of Algae
2
Total number of questions
58
Morphology of Flowering Plants
Topic Name
Number of Questions
Flower and Parts of Flower
32
Fruit and its Types
18
Morphology of Stems
10
Seed
10
Families of Flowering Plant
8
Modification of Roots
3
Morphology of Roots
3
Semi Technical Description
3
Venation, Types of Leaf and Phyllotaxy
2
Inflorescence
1
Modification of Leaf
1
Total number of questions
91
Anatomy of Flowering Plants
Topic Name
Number of Questions
Anatomy of Root
9
Activity of Cork Cambium
7
Epidermal Tissue System
5
Activity of Vascular Cambium
4
Complex Tissue: Xylem
4
Monocot Stem
4
Complex Tissue: Phloem
3
Meristematic Tissue: Classification
3
Monocot Leaf
3
Types of Wood
3
Vascular Tissue System
2
Activity of secondary xylem
1
Dicot Stem
1
Secondary Growth in Root
1
Total number of questions
50
Cell – The Unit of Life
Topic Name
Number of Questions
Ribosome
11
Mitochondria
9
Nucleus
6
Nucleus: Chromosomes
6
Cell Membranes
5
Cell Wall
5
Plastids
5
Golgi Apparatus
4
Intro to Endomembrane System: Endoplasmic Reticulum
4
Cilia and Flagella
3
Cytoskeleton
3
Details of Prokaryotic Cell Structure
3
Prokaryotic Cell Organisation
3
Vacuole
3
Endomembrane System (Endoplasmic Reticulum)
2
Endomembrane System (Lysosomes)
2
Eukaryotic Cell Organelle
2
Lysosomes
2
Cell Theory
1
Evidence for Fluidic Nature of Membrane
1
Microbodies
1
Total number of questions
81
Cell Cycle and Cell Division
Topic Name
Number of Questions
Cell Cycle: Meiosis
17
Intro to Cell Cycle and Interphase
14
Cell Division: Mitosis (Karyokinesis)
8
Total number of questions
39
Transport in Plants
Topic Name
Number of Questions
Stomata
7
Transpiration and Guttation
4
Phloem Translocation
2
Phloem Translocation: Short Distance Transport
2
Ascent of Sap
1
Diffusion
1
Means of Transport: Active
1
Plant water relations: Water Potential
1
Plasmolysis
1
Total number of questions
20
Mineral Nutrition
Topic Name
Number of Questions
Nitrogen Fixation
12
Mineral Function
11
Classification of Nutrients
4
Mineral deficiency and Toxicity
3
Nitrogen metabolism
2
Ammonia Assimilation and Nitrogen Export
1
Criteria for Essentiality of Elements
1
Nodule formation
1
Total number of questions
35
Photosynthesis in Higher Plants
Topic Name
Number of Questions
C4 Cycle (Hatch and Slack Pathway)
6
Light Reaction: Photophosphorylation
4
Dark Reaction: Calvin Cycle
3
Photorespiration
3
Photosynthesis
3
Chloroplast Structure
2
Historical View: Experiments
2
Light Reactions
2
Photosynthetic Pigments
2
C4 Plants Examples
1
CAM Pathway
1
Emerson’s Enhancement Experiment
1
Factors Affecting Photosynthesis
1
Light Reaction: Electron Transport
3
Total number of questions
34
Respiration in Plants
Topic Name
Number of Questions
Aerobic Respiration
5
Kreb’s Cycle
4
Glycolysis
3
Amphibolic Nature of Respiration
2
ETS
2
Fermentation
2
Oxidative Phosphorylation
2
Respiratory Quotient
1
Total number of questions
21
Plant Growth and Development
Topic Name
Number of Questions
Growth Hormones and Auxin
12
Gibberellin
5
Photoperiodism
5
Auxin Function
3
Seed germination
3
Abscisic Acid
2
Growth Model
2
Differentiation
1
Ethylene
1
Growth Terminology
1
Total number of questions
35
Reproduction in Organisms
Topic Name
Number of Questions
Asexual Reproduction
6
Sexual Reproduction
6
Events during Sexual Reproduction
4
Tissue Culture
1
Total number of questions
17
Sexual Reproduction in Flowering Plants
Topic Name
Number of Questions
Pollination and Outbreeding Devices
22
Pistil: Female Gametophyte
10
Seed
8
Stamen: Male Gametophyte
7
Endosperm
6
Apomixis and Polyembryony
4
Fruit
4
Pistil: Ovule
3
Stamen: Anther
3
Double Fertilization
2
Embryo
2
Stamen: Microsporangium
2
Post Pollination Events
1
Total number of questions
74
Principles of Inheritance and Variation
Topic Name
Number of Questions
Dominance Devistion from Mendel
14
Monohybrid Cross
8
Introduction to Genetics
7
Non-Disjunctionn-Aneuploidy
6
Sex Linked Inheritence
6
Linkage
5
Dihybrid Cross
4
Pedigree Analysis
4
polygenic Inheritence – Pleiotropy
4
Sex Determination
4
Chromosomal Basis of Inheritence
3
Sex-Aneuploidy-Turner-Klinefelter-Syndrome
3
Law – of – Segregation
2
Mendelian-Disorders-Hemophilia
3
Mendelian-Disorders-Thalassemia
2
Recombination Gene Mapping
2
Conclusion
1
Epistasis
1
Total number of questions
79
Molecular Basis of Inheritance
Topic Name
Number of Questions
Transcription
22
Translation
11
DNA Double Helix
10
Genetic Code
9
DNA Replication
8
Gene Regulation : Lac Operon
7
The DNA
7
DNA Fingerprinting
6
Human Genome Project
4
Search for Genetic Material
3
DNA Packaging
2
Gene Regulation in Eukaryotes
2
DNA vs RNA as Genetic Material
1
Total number of questions
92
Strategies for Enhancement in Food Production
Topic Name
Number of Questions
Plant Tissue Culture
11
Animal Husbandry
9
Breeding for Disease Resistance
8
Plant Breeding and Its Steps
5
Plant Breeding for Quality
4
Impact: Green Revolution
1
Single Cell Protein
1
Total number of questions
39
Microbes in Human Welfare
Topic Name
Number of Questions
Chemicals, Enzymes and Other Bioactive Molecules
14
Microbes in Sewage Treatment
12
Microbes in Biocontrol Agent
10
Microbes as Biofertilizer
8
Chemistry of Fermented Beverages
5
Industrial Products, Beverages and Antibiotics
4
Microbes in Househols Products
2
Microbes in Production of Biogas
1
Total number of questions
56
Organisms and Populations
Topic Name
Number of Questions
Population Interactions: Competition
10
Introduction to Ecology
5
Population Characters: Age Structure and Migration
4
Population Dynamic
4
Population Interactions: Commensalism, Protocooperation and Mutualism
