Biology NECO Syllabus

Below is the 2026 NECO Biology Syllabus for both internal and external candidates.

Aims and Objectives

The syllabus is designed to enable candidates to:

• acquire adequate knowledge of the concepts of biology.

• understand the structure, functions, and interrelationships of living organisms.

• develop practical and laboratory skills in biology.

• apply biological principles to everyday life and environmental issues.

• develop scientific attitudes such as observation, accuracy, objectivity, and critical thinking.

• understand the importance of biology in agriculture, medicine, industry, and technology.

• appreciate the need for conservation of natural resources.

• develop the ability to interpret biological data and draw logical conclusions.

Scheme of Examination

There will be three papers, Paper I, Paper II, and Paper III, all of which must be taken.

Paper I

Will consist of fifty multiple-choice objective questions drawn from all sections of the syllabus.

Duration: 1 hour
Marks: 50

Paper II

Will consist of essay and structured questions.

Candidates will be required to answer questions from various sections of the syllabus.

Duration: 2 hours 30 minutes
Marks: 100

Paper III

Will consist of practical biology questions or practical test alternatives where applicable.

Duration: 1 hour 30 minutes
Marks: 50

Detailed Biology Syllabus

INTRODUCTION TO BIOLOGY

Biology as a Science

• Meaning of biology

• Branches of biology

• Importance of biology

Scientific Methods

• Observation

• Experimentation

• Hypothesis

• Data collection

• Interpretation of results

LIVING THINGS AND THEIR ENVIRONMENT

Characteristics of Living Things

• Movement

• Respiration

• Sensitivity

• Growth

• Reproduction

• Excretion

• Nutrition

Classification of Living Organisms

• Kingdom classification

• Taxonomic hierarchy

• Binomial nomenclature

Ecology

• Habitat

• Niche

• Population

• Community

• Ecosystem

Environmental Conservation

• Renewable resources

• Non-renewable resources

• Conservation practices

CELL BIOLOGY

The Cell

• Cell theory

• Cell structure

• Cell functions

Cell Components

• Cell membrane

• Cytoplasm

• Nucleus

• Mitochondria

• Ribosomes

• Vacuoles

• Chloroplasts

Cell Division

• Mitosis

• Meiosis

• Importance of cell division

Levels of Organization

• Cells

• Tissues

• Organs

• Organ systems

NUTRITION

Modes of Nutrition

• Autotrophic nutrition

• Heterotrophic nutrition

Plant Nutrition

• Photosynthesis

• Mineral requirements

• Factors affecting photosynthesis

Animal Nutrition

• Food classes

• Balanced diet

• Digestive system

• Digestive enzymes

TRANSPORT SYSTEM

Transport in Plants

• Xylem

• Phloem

• Translocation

• Transpiration

Transport in Animals

• Blood

• Blood vessels

• Heart structure

• Circulatory system

RESPIRATION

Aerobic Respiration

• Meaning

• Process

• Importance

Anaerobic Respiration

• Fermentation

• Differences from aerobic respiration

Respiratory Organs

• Gills

• Lungs

• Trachea

• Skin

EXCRETION

Excretion in Plants

• Excretory products

• Methods of removal

Excretion in Animals

• Kidneys

• Skin

• Lungs

• Liver

SUPPORT AND MOVEMENT

Support Systems in Plants

• Turgidity

• Woody tissues

Skeletal System

• Types of skeletons

• Human skeleton

• Functions of the skeleton

Joints and Muscles

• Types of joints

• Movement mechanisms

REPRODUCTION

Asexual Reproduction

• Binary fission

• Budding

• Vegetative propagation

Sexual Reproduction in Plants

• Flower structure

• Pollination

• Fertilization

• Fruit and seed formation

Sexual Reproduction in Animals

• Male reproductive system

• Female reproductive system

• Fertilization

• Development of embryo

GROWTH

Growth in Plants

• Germination

• Factors affecting growth

Growth in Animals

• Growth patterns

• Metamorphosis

COORDINATION AND CONTROL

Nervous System

• Neurons

• Central nervous system

• Reflex actions

Sense Organs

• Eye

• Ear

• Nose

• Tongue

• Skin

Endocrine System

• Hormones

• Endocrine glands

HEREDITY AND EVOLUTION

Genetics

• Chromosomes

• Genes

• DNA

• Inheritance

Mendelian Genetics

• Monohybrid crosses

• Dominant and recessive traits

Variation

• Continuous variation

• Discontinuous variation

Evolution

• Theories of evolution

• Natural selection

• Adaptation

ECOLOGY

Ecosystem Studies

• Food chains

• Food webs

• Ecological pyramids

Nutrient Cycling

• Carbon cycle

• Nitrogen cycle

• Water cycle

Population Studies

• Population density

• Population growth

Environmental Pollution

• Air pollution

• Water pollution

• Soil pollution

• Pollution control

MICROORGANISMS

Types of Microorganisms

• Bacteria

• Viruses

• Fungi

• Protozoa

Importance of Microorganisms

• Useful microorganisms

• Harmful microorganisms

Diseases

• Causes of diseases

• Prevention and control

BIOTECHNOLOGY

Applications of Biology

• Genetic engineering

• Tissue culture

• Cloning

• Modern biological techniques

PRACTICAL BIOLOGY

Biological Drawings

• Rules of biological drawing

• Labeling techniques

Microscopy

• Parts of the microscope

• Use of the microscope

Experimental Biology

• Observation and recording

• Identification of specimens

• Interpretation of results

Key Areas Frequently Tested in NECO Biology

• Cell Structure and Functions

• Classification of Living Things

• Nutrition

• Photosynthesis

• Respiration

• Transport Systems

• Reproduction

• Genetics and Heredity

• Ecology

• Evolution

• Human Organ Systems

• Microorganisms

• Environmental Conservation

• Practical Biology

• Biological Drawings

These topics form the core of the NECO Biology examination and usually account for the majority of objective, theory, and practical questions. Students should focus on understanding biological concepts, mastering diagrams, practicing specimen identification, and solving past questions regularly to achieve excellent results in the examination.