If you have been searching for JAMB Biology Exam Lessons 2027, JAMB Biology syllabus 2027, Biology JAMB questions and answers, JAMB Biology past questions PDF, JAMB Biology past questions and answers, Biology topics for JAMB, JAMB Biology areas of concentration, how to pass JAMB Biology, JAMB Biology CBT practice, or the most important Biology topics for JAMB, then you are not alone.
Welcome to O3SCHOOLS, where we make JAMB preparation easier, clearer and more practical.
This page contains our JAMB Biology online lessons, important Biology topics, syllabus breakdown, video tutorials, revision materials and practice resources to help you prepare for the UTME.
The goal is simple: understand Biology, practise questions and improve your JAMB score.
Important 2027 update: At the time of this update, JAMB’s publicly available Biology e-syllabus remains the basis for this lesson structure. We will update this page if JAMB publishes a new or revised Biology syllabus for the 2027 UTME. The current JAMB Biology syllabus covers five broad areas: Variety of Organisms, Form and Functions, Ecology, Heredity and Variations, and Evolution.
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JAMB Biology Exam Lessons 2027
Below are our JAMB Biology video lessons arranged in a simple learning order.
These lessons are designed to help you understand the topics before moving to difficult examination questions.
JAMB Online Tutorials – All Subjects
Free JAMB Lessons for All Subjects
Study every JAMB subject with simplified tutorials, exam tips, likely questions and detailed explanations.
JAMB Use of English
Comprehension, Lexis, Oral English, Grammar and CBT practice.
JAMB Literature
Poetry, Drama, African Prose and recommended texts.
JAMB Chemistry
Organic Chemistry, Calculations, Practical and theory lessons.
JAMB Physics
Mechanics, Electricity, Modern Physics and solved questions.
JAMB Mathematics
Algebra, Trigonometry, Calculus, Geometry and Statistics.
JAMB Government
Political Institutions, Constitution and Nigerian Government.
JAMB Biology
Ecology, Genetics, Human Physiology and Plant Biology.
JAMB Economics
Demand, Supply, National Income, Money and Inflation.
JAMB CRS
Biblical teachings, miracles, prophets and Christian doctrines.
JAMB Commerce
Business organizations, banking, insurance and trade.
JAMB Biology Video Lessons
Episode 0 – JAMB Biology Syllabus & Areas of Concentration
Episode 1 – JAMB Biology EP 1 – Characteristics of Living Things
Episode 2 – JAMB Biology EP 2 – Systematics: Taxonomy & Binomial Nomenclature + Likely Exam Questions
Episode 3 – JAMB Biology EP 3 – Two Systems of Classification of Living Organisms + Likely Questions
Episode 4 – JAMB Biology EP 4 – Five Kingdom Classification of Living Organisms + Likely Exam Questions
Episode 5 – JAMB Biology EP 5 – Kingdom Protista + Likely Exam Questions
Episode 6 – JAMB Biology EP 6 – Kingdom Monera + Likely Exam Questions
Watch the complete JAMB Biology lesson playlist
What Are the Topics in Biology for JAMB 2027?
JAMB Biology is not a subject you should prepare for by memorising random questions.
You need to understand the major areas of the syllabus and practise questions from each area.
The Biology syllabus is designed to test your understanding of the diversity, interdependence and unity of life, continuity of life through inheritance and evolution, and the application of biological principles to everyday life, health, society and the environment.
The major areas are:
- Variety of Organisms
- Form and Functions
- Ecology
- Heredity and Variations
- Evolution
Let us break them down.
A. Variety of Organisms
This is one of the major areas you should study carefully for JAMB Biology.
1. Living Organisms
You should understand:
- Characteristics of living things
- Cell structure
- Functions of cell components
- Levels of organisation
- Cells
- Tissues
- Organs
- Systems
- Organisms
Examples used in the syllabus include organisms such as Euglena, Paramecium and Chlamydomonas, as well as examples of tissues, organs and body systems.
What You Should Know
You should be able to:
- Differentiate between living and non-living things.
- Identify plant and animal cell structures.
- State the functions of cell components.
- Compare plant and animal cells.
- Arrange levels of organisation in the correct order.
2. Classification of Living Organisms
Classification is another important part of JAMB Biology.
You should understand the major groups of organisms and their characteristics.
Topics include:
- Monera
- Protista
- Fungi
- Plantae
- Animalia
- Plant classification
- Animal classification
- Vertebrates
- Invertebrates
- Structural complexity
- Evolutionary relationships
Examples include bacteria, blue-green algae, Amoeba, Euglena, Paramecium, mushrooms, Rhizopus, mosses, ferns, flowering plants, fish, amphibians, reptiles, birds and mammals.
3. Adaptation in Organisms
You should also understand how organisms survive in their environments.
Important areas include:
- Structural adaptation
- Functional adaptation
- Behavioural adaptation
- Adaptive colouration
- Warning colouration
- Countershading
- Social behaviour
- Competition for resources
- Protection and defence
- Feeding adaptations
- Reproductive adaptations
- Temperature regulation
- Water conservation
JAMB may test your ability to relate a particular structure or behaviour to its survival function.
B. Form and Functions
This is a very important part of the JAMB Biology syllabus.
It deals with how structures in plants and animals perform specific functions.
1. Internal Structure of Flowering Plants
Study:
- Root
- Stem
- Leaf
- Internal structures of plant organs
- Supporting tissues
- Xylem
- Phloem
- Collenchyma
- Sclerenchyma
You should know how the structure of each plant organ relates to its function.
2. Internal Structure of Mammals
You should understand the arrangement and functions of major mammalian organs.
Pay particular attention to:
- Digestive organs
- Reproductive organs
- Excretory organs
- Internal body organisation
3. Nutrition
Nutrition is a major JAMB Biology topic.
Study:
Modes of Nutrition
- Autotrophic nutrition
- Heterotrophic nutrition
Types of Nutrition
- Holozoic nutrition
- Parasitic nutrition
- Saprophytic nutrition
- Carnivorous nutrition
Plant Nutrition
Study:
- Photosynthesis
- Conditions necessary for photosynthesis
- Light reaction
- Dark reaction
- Chlorophyll
- Carbon dioxide
- Mineral nutrients
- Macronutrients
- Micronutrients
- Plant deficiency symptoms
Animal Nutrition
Study:
- Carbohydrates
- Proteins
- Fats and oils
- Vitamins
- Mineral salts
- Water
- Balanced diet
- Food tests
- Mammalian teeth
- Alimentary canal
- Digestion
- Absorption
- Assimilation
- Digestive enzymes
Food tests are especially useful because JAMB can test them through practical-style questions and experimental situations.
4. Transport in Plants and Animals
You should understand why transportation is necessary in complex organisms.
Important areas include:
- Need for transportation
- Materials transported in organisms
- Blood
- Lymph
- Heart
- Arteries
- Veins
- Capillaries
- Xylem
- Phloem
- Diffusion
- Osmosis
- Plasmolysis
- Turgidity
- Root pressure
- Transpiration pull
- Active transport
You should also know the functions of important blood vessels such as the:
- Aorta
- Pulmonary artery
- Pulmonary vein
- Hepatic portal vein
- Renal artery
- Renal vein
5. Respiration
Study:
- Meaning of respiration
- Importance of respiration
- Respiratory organs
- Gaseous exchange
- Aerobic respiration
- Anaerobic respiration
- Glycolysis
- Krebs cycle
- ATP
- Fermentation
- Economic importance of yeast
You should also understand gaseous exchange in plants and animals.
6. Excretion
Important areas include:
- Meaning of excretion
- Importance of excretion
- Excretory structures
- Contractile vacuole
- Flame cell
- Nephridium
- Malpighian tubule
- Kidney
- Lungs
- Skin
- Stomata
- Lenticels
- Excretory products of plants
The structure and functions of the kidney deserve serious attention.
7. Support and Movement
Study:
- Support in plants
- Support in animals
- Plant movements
- Tropism
- Tactic movement
- Nastic movement
- Sleep movement
- Skeleton
- Exoskeleton
- Endoskeleton
- Joints
- Movement in mammals
You should understand how structures such as bone, cartilage and chitin provide support.
8. Reproduction
Reproduction is another major Biology topic.
Study:
Asexual Reproduction
- Fission
- Budding
- Natural vegetative propagation
- Artificial vegetative propagation
- Grafting
- Budding
- Layering
Sexual Reproduction in Flowering Plants
Study:
- Floral parts
- Functions of floral parts
- Pollination
- Cross-pollination
- Fertilisation
- Placentation
- Fruit formation
Reproduction in Mammals
Study:
- Male reproductive system
- Female reproductive system
- Gametes
- Fertilisation
- Embryonic development
- Pregnancy
- Birth
- Factors affecting foetal development
9. Growth
You should understand:
- Meaning of growth
- Seed germination
- Conditions necessary for germination
- Epigeal germination
- Hypogeal germination
10. Coordination and Control
This section covers how organisms respond to changes around them.
Study:
- Nervous coordination
- Central nervous system
- Peripheral nervous system
- Nerve impulses
- Reflex action
- Sense organs
- Hormonal control
- Plant hormones
- Homeostasis
Sense Organs
Know the functions of:
- Skin
- Nose
- Tongue
- Eye
- Ear
Endocrine Glands
Study:
- Pituitary gland
- Thyroid gland
- Parathyroid gland
- Adrenal gland
- Pancreas
- Gonads
Also study plant hormones such as:
- Auxins
- Gibberellins
- Cytokinins
- Ethylene
C. Ecology
Ecology is one of the biggest sections of JAMB Biology.
It deals with organisms and their environment.
1. Factors Affecting the Distribution of Organisms
Study:
Abiotic Factors
- Temperature
- Rainfall
- Relative humidity
- Wind
- Altitude
- Salinity
- Turbidity
- pH
- Soil conditions
Biotic Factors
Study how living organisms affect one another and their environment.
2. Symbiotic Relationships
Know the differences between:
- Mutualism
- Commensalism
- Parasitism
- Saprophytism
- Amensalism
- Competition
- Predation
- Cooperation
Do not only memorise the definitions.
Learn examples.
3. Food Chains and Food Webs
Study:
- Producers
- Consumers
- Decomposers
- Food chains
- Food webs
- Trophic levels
- Energy flow
You should be able to identify the position of an organism in a food chain.
4. Nutrient Cycles
Pay attention to:
- Carbon cycle
- Water cycle
- Nitrogen cycle
- Role of bacteria
- Role of leguminous plants
- Balance of atmospheric gases
- Global warming
5. Natural Habitats
Study aquatic and terrestrial habitats.
Aquatic Habitats
Examples include:
- Ponds
- Streams
- Lakes
- Seashores
- Mangrove swamps
Terrestrial Habitats
Examples include:
- Tree tops
- Farmland
- Savanna
- Burrows
- Dry grassland
You should know how organisms adapt to their habitats.
6. Nigerian Biomes
This is particularly useful for Nigerian candidates.
Study:
- Tropical rainforest
- Guinea savanna
- Sudan savanna
- Desert
- Montane forests
- Montane grasslands
You should know where these biomes are found and their major characteristics.
7. Population Ecology
Important topics include:
- Population density
- Overcrowding
- Competition
- Intra-specific competition
- Inter-specific competition
- Population size
- Biotic factors
- Abiotic factors
- Ecological succession
- Primary succession
- Secondary succession
- Climax community
You may also be required to calculate population density.
8. Soil
Study:
- Sandy soil
- Loamy soil
- Clay soil
- Soil structure
- Porosity
- Capillarity
- Humus
- Soil organisms
- Soil air
- Soil water
- Soil fertility
- Soil erosion
- Leaching
- Soil compaction
- Crop rotation
- Mulching
- Terracing
- Contour ridging
- Fertiliser application
- Shifting cultivation
9. Humans and the Environment
Study:
Diseases
Examples include:
- Malaria
- Cholera
- Tuberculosis
- Typhoid
- Meningitis
- Gonorrhoea
- Syphilis
- AIDS
- Schistosomiasis
- Onchocerciasis
Understand:
- Causes
- Causative organisms
- Modes of transmission
- Symptoms
- Prevention
- Control
Pollution
Study:
- Air pollution
- Water pollution
- Soil pollution
- Sources of pollution
- Effects of pollution
- Pollution control
Conservation
Study:
- Natural resources
- Conservation
- Game reserves
- National parks
- Desertification
- Protection of wildlife
D. Heredity and Variations
This section can produce both theory and calculation-based questions.
1. Variation
Study:
- Continuous variation
- Discontinuous variation
- Height
- Weight
- Skin colour
- Eye colour
- Hair colour
- Fingerprints
- Blood groups
- Physiological variation
Also understand the use of variation in:
- Crime detection
- Blood transfusion
- Paternity testing
2. Heredity
Study:
- Heritable characters
- Non-heritable characters
- Chromosomes
- DNA
- Genes
- Transmission of characters
- Meiosis
- Fertilisation
- Probability
- Sex determination
- Sex-linked characters
Important examples include:
- Haemophilia
- Colour blindness
- Baldness
3. Application of Genetics
You should understand the application of heredity in:
- Agriculture
- Medicine
- Crop improvement
- Livestock improvement
- Cross-breeding
- In-breeding
- Out-breeding
- Genetically modified organisms
- Gene therapy
- Blood groups
- Sickle-cell anaemia
- Rhesus factor
E. Evolution
The final major section is Evolution.
Study:
- Meaning of evolution
- Lamarck’s theory
- Darwin’s theory
- Organic evolution
- Evidence of evolution
- Fossil records
- Comparative anatomy
- Comparative physiology
- Embryology
- Mutation
- Genetic evidence
You should understand both the theories and the evidence supporting evolutionary change.
JAMB Biology Areas of Concentration 2027
If you are asking, “What are the most important topics to study for JAMB Biology?”, do not study only one or two topics.
The safest approach is to cover the entire syllabus.
However, while revising, give extra attention to topics that allow you to understand many question types.
These include:
- Cell structure and functions
- Classification of organisms
- Adaptation
- Nutrition
- Photosynthesis
- Digestion
- Transport
- Respiration
- Excretion
- Reproduction
- Genetics
- Variation
- Ecology
- Food chains and food webs
- Population
- Soil
- Diseases
- Pollution
- Conservation
- Evolution
How to Pass JAMB Biology 2027
Scoring high in Biology is possible if you study with a clear plan.
Do not wait until a few weeks before the examination.
Use this simple method.
1. Study the Biology Syllabus
Start with the syllabus.
Know exactly what you need to study.
You can also check your other JAMB subjects from our complete JAMB syllabus guide.
JAMB Syllabus for All Subjects
2. Watch the Video Lessons
Do not just watch a video and move on.
Pause when necessary.
Write short notes.
Then answer questions on the topic.
3. Practise JAMB Biology Questions
After studying a topic, practise questions immediately.
This helps you discover the areas you do not understand.
4. Use CBT Practice
Biology preparation should include CBT practice.
You need to become comfortable with:
- Reading questions quickly
- Identifying keywords
- Eliminating wrong options
- Managing time
- Reviewing difficult questions
Download the O3SCHOOLS JAMB App
The O3SCHOOLS JAMB App can help you practise Biology and your other UTME subjects.
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Practise regularly instead of waiting until the examination is close.
Study Biology Together With Your Other JAMB Subjects
Biology candidates often combine Biology with subjects such as Chemistry, Physics, Mathematics and English Language, depending on their intended course.
Do not prepare for Biology alone.
Use our other free JAMB lessons to build a complete preparation plan:
All O3SCHOOLS JAMB Online Tutorials
JAMB Biology 2027 Frequently Asked Questions
What are the topics in Biology for JAMB?
The major areas are Variety of Organisms, Form and Functions, Ecology, Heredity and Variations, and Evolution.
What should I study for JAMB Biology?
Study the complete Biology syllabus. Pay particular attention to cells, classification, adaptation, nutrition, transport, respiration, reproduction, ecology, genetics, variation, diseases, pollution and evolution.
How can I pass JAMB Biology?
Study the syllabus, watch topic-by-topic lessons, revise regularly and practise many CBT questions.
Can I score high in JAMB Biology?
Yes. A strong understanding of the syllabus, regular revision and consistent CBT practice can significantly improve your performance.
Is Biology difficult in JAMB?
Biology becomes easier when you understand the concepts instead of trying to memorise every sentence in your textbook.
How do I prepare for JAMB Biology CBT?
Study one topic at a time, answer practice questions immediately after each lesson and regularly practise under timed CBT conditions.
Is the JAMB Biology syllabus important?
Yes. It gives you a clear structure for your preparation and helps you avoid spending too much time on topics outside the examination scope.
JAMB Biology 2027: Final Preparation Advice
Do not make the mistake of preparing for JAMB Biology by searching for only “JAMB Biology expo”, “answers to JAMB questions” or supposed leaked questions.
Build your knowledge.
Understand the topic.
Practise questions.
Review your mistakes.
Repeat.
That is a much stronger preparation strategy.
The O3SCHOOLS JAMB Biology Exam Lessons are designed to take you from the basic concepts to more difficult examination questions. Start from the first lesson, follow the episodes in order and combine the lessons with regular CBT practice.
Start JAMB Biology Exam Lessons
If you are preparing for JAMB 2027, start now.
Do not wait until the examination is close.
Study today. Practise today. Improve today.
Related JAMB Resources
JAMB Cut-Off Marks for Universities and Polytechnics
JAMB Change of Course and Institution
How to Score 300 and Above in JAMB
JAMB Subject Combinations for All Courses
JAMB Biology 2027 Video Lesson Playlist
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