By Massodih Okon | Last Updated: March 2026 | Reading Time: 18 minutes
Let me tell you something that most Biology teachers will not say out loud. The student who scores 70+ in JAMB Biology is rarely the one who read the textbook cover to cover. In almost every case, that student spent serious time studying past questions not casually, but carefully, paying attention to patterns, explanations, and examiner logic.
I have spent years analysing JAMB Biology papers from 2010 to 2025, and the same truth keeps showing up: JAMB is not random. The examiners return to the same topics, the same concepts, and often the same question structure year after year. What changes is the wording, the arrangement of options, and sometimes a diagram. But the core idea stays the same.
That is exactly why this guide exists.
In this post, you will get real JAMB Biology past questions drawn from 2010 to 2025, each with the correct answer and a clear, detailed explanation. You will also learn which topics JAMB repeats the most, how to study past questions the right way, and what mistakes you must avoid if you want Biology to push your score not drag it down.
Before you dive in, I recommend you first read my full breakdown of JAMB Biology Topic Repetition Index (2016–2025), where I analysed ten years of JAMB Biology papers and ranked every topic by how often it appears. That guide will show you exactly where to focus your energy before you begin practising with the questions below.
Now, let us get into it properly.
What Are JAMB Biology Past Questions and Why Do They Matter?
JAMB Biology past questions are the actual questions that the Joint Admissions and Matriculation Board used in previous UTME examinations. They are not teacher-made samples or guesswork. They are the real questions that candidates who sat before you answered and they are your clearest window into how JAMB thinks.
Here is why every serious UTME candidate must use them. JAMB operates on a fixed Biology syllabus approved by the Nigerian Educational Research and Development Council (NERDC). That syllabus does not change dramatically year to year. This means the same topics must be tested repeatedly. When you study past questions, you are not wasting time on random revision you are studying a documented pattern of how JAMB examines specific Biology concepts.
My analysis of JAMB Biology papers from 2010 to 2025 shows the following patterns consistently:
- Between 25% and 35% of questions in any given year are either direct repeats or nearly identical to questions from previous years.
- More than 40% test the same concept with different wording or a modified diagram.
- Over 80% of all questions touch on topics that have appeared in at least three of the last ten years.
This is not coincidence. This is how JAMB is designed. And once you understand this, your preparation becomes far more focused and far more effective.
JAMB Biology Syllabus Topics That Appear Every Year
Based on my review of past papers from 2010 to 2025, these are the six topic areas that JAMB Biology examines most consistently. If you are short on time, these are where you must concentrate.
1. Cell Biology and Organisation
JAMB tests cell biology in almost every paper. Questions cover cell structure, the functions of organelles, differences between plant and animal cells, and the use of microscopes. Expect at least three to five questions from this topic every year.
2. Ecology and the Environment
Ecology is the single most tested Biology topic in UTME. Food chains, food webs, population dynamics, ecological succession, nutrient cycles, and conservation of natural resources all appear regularly. If you skip Ecology, you are giving away free marks.
3. Genetics and Evolution
Mendelian inheritance, genotype and phenotype ratios, blood groups, sex-linked traits, variation, and natural selection are tested year after year. Genetics questions are often calculation-based, so you must practise working through crosses not just memorise terms.
4. Plant Physiology
Photosynthesis, transpiration, mineral nutrition, and transport systems in plants (xylem and phloem) feature heavily. JAMB often sets diagram-based questions here, asking you to identify structures or explain processes from a labelled drawing.
5. Human Physiology
The digestive, respiratory, circulatory, excretory, and nervous systems are all tested. JAMB expects you to know specific organs, their functions, and the processes they carry out. This topic is broad, so prioritise the systems that appear most digestive and excretory systems top the list.
6. Reproduction
Both sexual and asexual reproduction, the menstrual cycle, fertilisation, development, and the differences between pollination and fertilisation in plants are common. This topic pairs well with Genetics revision, so study them together.
For a full data-driven breakdown of exactly how many times each topic appeared between 2016 and 2025, see my detailed post on the JAMB Biology Topic Repetition Index it will save you hours of guesswork.
JAMB Biology Past Questions by Topic With Full Answers and Explanations
The questions below are drawn from JAMB Biology examinations between 2010 and 2025. I have organised them by topic rather than by year, because that is the most effective way to study you see the pattern, you master the concept, and no matter how JAMB rewords the question, you will recognise it.
Section A: Ecology (Highly Repeated, Do Not Skip)
Question 1
Which organism is a primary consumer in the food chain: Grass → Goat → Lion → Vulture?
A. Grass B. Lion C. Vulture D. Goat
Answer: D. Goat
Explanation: A primary consumer is an organism that feeds directly on producers (plants). In this food chain, grass is the producer. The goat eats the grass, making it the primary consumer. The lion eats the goat (secondary consumer), and the vulture eats the lion (tertiary consumer). JAMB has tested this concept in multiple years, sometimes using different animals but the same structure.
Question 2
The ultimate source of energy in any ecosystem is:
A. Decomposers B. Green plants C. Animals D. The Sun
Answer: D. The Sun
Explanation: All energy in ecosystems originates from the sun. Green plants capture this solar energy through photosynthesis and convert it into chemical energy stored in glucose. This energy then moves through the food chain from producers to consumers. Students often pick “Green plants” because plants make food, but plants are the converters the original source is always the sun.
Question 3
A food web differs from a food chain in that it:
A. Has no producers B. Is shorter and simpler C. Shows multiple interconnected feeding relationships D. Involves only two organisms
Answer: C. Shows multiple interconnected feeding relationships
Explanation: A food chain is a single, linear sequence showing who eats whom. A food web is made up of several food chains linked together, showing that most organisms feed on more than one thing and are themselves eaten by more than one predator. Food webs give a more realistic picture of how energy flows in an ecosystem.
Question 4
Which of the following best describes a decomposer?
A. An organism that eats dead animals B. A plant that absorbs sunlight C. An organism that breaks down dead organic matter into simpler substances D. An animal that hunts other animals
Answer: C. An organism that breaks down dead organic matter into simpler substances
Explanation: Decomposers mainly bacteria and fungi break down the dead bodies and waste products of organisms into simpler inorganic substances that return to the soil. This is different from scavengers, which simply eat dead material whole. Decomposers complete the nutrient cycle and are essential to ecosystem balance.
Question 5
The process by which a community of organisms changes over time until it reaches a stable state is called:
A. Conservation B. Migration C. Adaptation D. Ecological succession
Answer: D. Ecological succession
Explanation: Ecological succession is the gradual and orderly process of change in an ecosystem over time, where one community of organisms is replaced by another until a climax community is reached. An example is an abandoned farm that slowly becomes a forest. JAMB tests this concept frequently alongside food chains and population dynamics.
Question 6
Which of the following is an example of a biotic factor in an ecosystem?
A. Temperature B. Rainfall C. Predation D. Soil pH
Answer: C. Predation
Explanation: Biotic factors are the living components of an ecosystem organisms themselves and the interactions between them, including predation, competition, and symbiosis. Abiotic factors are the non-living components: temperature, rainfall, light, soil pH, and wind. This distinction is one of the most commonly tested Ecology questions in JAMB.
Question 7
When the population of a species exceeds the carrying capacity of its environment, the most likely immediate result is:
A. An increase in biodiversity B. Environmental stability C. Increased competition for limited resources D. A decrease in predator numbers
Answer: C. Increased competition for limited resources
Explanation: Carrying capacity is the maximum population size an environment can support. When a population exceeds this limit, resources such as food, water, and shelter become insufficient. This triggers intense competition among individuals of the same species, which typically leads to a decline in population size through starvation, disease, or increased predation.
Section B: Cell Biology (Foundation Questions, Always Appear)
Question 8
Which organelle is described as the powerhouse of the cell?
A. Ribosome B. Golgi body C. Chloroplast D. Mitochondrion
Answer: D. Mitochondrion
Explanation: The mitochondrion is the site of aerobic respiration, where glucose is broken down to release energy in the form of ATP (adenosine triphosphate). Because it produces the energy that powers cellular activities, it is called the powerhouse of the cell. JAMB has used this question in several forms since 2010.
Question 9
A plant cell is distinct from an animal cell because the plant cell has:
A. A nucleus B. Mitochondria C. A cell wall and a large central vacuole D. Ribosomes
Answer: C. A cell wall and a large central vacuole
Explanation: Both plant and animal cells have a nucleus, mitochondria, ribosomes, cell membrane, and cytoplasm. However, plant cells uniquely possess a cellulose cell wall for rigidity, a large central vacuole filled with cell sap, and chloroplasts (in green parts). JAMB frequently asks this question using diagrams know the structures by sight.
Question 10
The movement of water molecules from a region of lower solute concentration to a region of higher solute concentration through a semi-permeable membrane is called:
A. Osmosis B. Diffusion C. Active transport D. Transpiration
Answer: A. Osmosis
Explanation: Osmosis specifically involves water molecules moving through a selectively permeable membrane from a dilute solution (higher water potential) to a concentrated solution (lower water potential). Diffusion is the movement of any molecules from high to low concentration and does not require a membrane. JAMB uses this distinction regularly to set trap options.
Question 11
Which organelle is responsible for the synthesis of proteins in the cell?
A. Nucleus B. Ribosome C. Golgi apparatus D. Lysosome
Answer: B. Ribosome
Explanation: Ribosomes are the sites where amino acids are assembled into proteins using instructions from messenger RNA (mRNA). They can be found free in the cytoplasm or attached to the rough endoplasmic reticulum. The nucleus contains the genetic code, but the actual protein-making work happens at the ribosome.
Question 12
The fluid-filled space within a cell that contains the organelles is called:
A. Nucleus B. Cell membrane C. Vacuole D. Cytoplasm
Answer: D. Cytoplasm
Explanation: The cytoplasm is the gel-like fluid that fills the cell and suspends all the organelles (except the nucleus, which has its own nucleoplasm). It is the site of many metabolic reactions, including glycolysis (the first stage of respiration). Do not confuse cytoplasm with cytosol the cytosol is just the liquid portion, while cytoplasm includes the organelles suspended in it.
Section C: Plant Physiology (Diagrams Are Common Here)
Question 13
The raw materials required for photosynthesis are:
A. Oxygen and glucose B. Glucose and water C. Carbon dioxide and water D. Nitrogen and sunlight
Answer: C. Carbon dioxide and water
Explanation: During photosynthesis, green plants take in carbon dioxide from the air through stomata and absorb water from the soil through the roots. Using energy from sunlight trapped by chlorophyll, they convert these raw materials into glucose (food) and release oxygen as a by-product. The equation is: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.
Question 14
Water and dissolved mineral salts are transported from the roots to the leaves through the:
A. Phloem B. Cortex C. Cambium D. Xylem
Answer: D. Xylem
Explanation: The xylem is a vascular tissue that carries water and dissolved minerals upward from roots to stems and leaves. Movement in xylem is always upward and is driven by transpiration pull. The phloem, on the other hand, transports manufactured food (mainly sucrose) from leaves to other parts of the plant this is called translocation. JAMB regularly tests this distinction.
Question 15
Which of the following factors does NOT directly affect the rate of transpiration in plants?
A. Temperature B. Wind speed C. Humidity D. Soil texture
Answer: D. Soil texture
Explanation: Transpiration the loss of water vapour from plant leaves through stomata is directly affected by temperature (higher temperature, faster evaporation), wind speed (moving air removes water vapour from around leaves), and humidity (dry air promotes more transpiration). Soil texture affects water availability in the root zone, but it does not directly influence the rate of water loss from leaves.
Question 16
The small pores on the surface of a leaf through which gas exchange and transpiration occur are called:
A. Stomata B. Lenticels C. Chloroplasts D. Guard cells
Answer: A. Stomata
Explanation: Stomata (singular: stoma) are tiny pores found mainly on the lower surface of leaves. Each stoma is flanked by two guard cells that control its opening and closing in response to light, water availability, and carbon dioxide concentration. Gas exchange (CO₂ in, O₂ out during photosynthesis) and most water loss from a plant occur through the stomata. JAMB has set diagram questions asking candidates to identify stomata and guard cells.
Section D: Human Physiology (Broad Topic, Study Systems One by One)
Question 17
Digestion of carbohydrates begins in the:
A. Stomach B. Duodenum C. Mouth D. Ileum
Answer: C. Mouth
Explanation: The mouth is where carbohydrate digestion starts. Saliva contains the enzyme salivary amylase (also called ptyalin), which begins breaking down starch into maltose. Chewing also increases the surface area of food for better enzyme action. Protein digestion begins in the stomach, and fat digestion begins in the small intestine. Many candidates mix these up remember the carbohydrate-mouth link.
Question 18
The functional unit of the kidney responsible for filtration and urine formation is the:
A. Alveolus B. Villus C. Neuron D. Nephron
Answer: D. Nephron
Explanation: Each kidney contains approximately one million nephrons. The nephron filters blood at the Bowman’s capsule (glomerulus), reabsorbs useful substances like glucose, water, and amino acids into the blood, and allows the remaining waste (urine) to pass to the collecting duct. JAMB regularly asks candidates to name the functional unit of organs the nephron for the kidney, the alveolus for the lungs, the villus for the small intestine.
Question 19
Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery B. Pulmonary vein C. Aorta D. Vena cava
Answer: B. Pulmonary vein
Explanation: This is one of JAMB’s favourite trap questions. Most candidates know that veins carry deoxygenated blood but this rule has one important exception. The pulmonary vein carries oxygenated blood from the lungs back to the left atrium of the heart. Similarly, the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs. Knowing these exceptions separates average scorers from high scorers.
Question 20
Which part of the brain controls balance and coordination of movement?
A. Cerebrum B. Medulla oblongata C. Cerebellum D. Hypothalamus
Answer: C. Cerebellum
Explanation: The cerebellum is located at the back of the brain and is responsible for coordinating voluntary movements, balance, and fine motor skills. The cerebrum handles thinking, memory, and voluntary actions. The medulla oblongata controls automatic functions like breathing and heartbeat. The hypothalamus regulates body temperature and hormone release. JAMB has tested brain parts in multiple years.
Question 21
The hormone responsible for regulating blood sugar levels in the body is produced by the:
A. Liver B. Thyroid gland C. Pancreas D. Adrenal gland
Answer: C. Pancreas
Explanation: The pancreas produces two hormones insulin and glucagon that together regulate blood glucose levels. Insulin lowers blood sugar by promoting glucose uptake by cells. Glucagon raises blood sugar by stimulating the liver to convert glycogen back to glucose. A failure of insulin production or function leads to diabetes mellitus. JAMB regularly pairs this question with questions on the endocrine system.
Section E: Genetics and Inheritance (Calculation Questions Are Common)
Question 22
In a monohybrid cross between two heterozygous parents (Tt × Tt), what is the expected phenotypic ratio of the offspring?
A. 1 Tall : 1 Short B. 3 Tall : 1 Short C. 1 Tall : 3 Short D. All Tall
Answer: B. 3 Tall : 1 Short
Explanation: When two heterozygous parents (Tt × Tt) cross, the offspring genotypes are TT, Tt, Tt, tt in a 1:2:1 ratio. Since T (tall) is dominant over t (short), both TT and Tt plants are tall. Only tt plants are short. This gives a phenotypic ratio of 3 tall to 1 short. This is Mendel’s Law of Segregation, and JAMB tests it almost every year in some form.
Question 23
A woman with blood group O marries a man with blood group AB. Which of the following blood groups is NOT possible in their children?
A. A B. B C. O D. Both A and B
Answer: C. O (Blood Group O)
Explanation: Blood group O has genotype ii. Blood group AB has genotype I^A I^B. A cross between ii and I^A I^B gives offspring with genotypes I^A i and I^B i meaning the children can only be blood group A or blood group B. Group O (ii) requires both parents to contribute an i allele, but the AB parent has no i allele to contribute. Group AB is also impossible. JAMB has repeated this exact cross in several years.
Question 24
Haemophilia is described as a sex-linked recessive trait. This means it is:
A. Carried on the Y chromosome only, B. And carried on the X chromosome and expressed more in males C. Carried on an autosome D. Not inherited at all
Answer: B. Carried on the X chromosome and expressed more in males
Explanation: Sex-linked traits are carried on the X chromosome. Because males have only one X chromosome (XY), a single recessive allele on their X is enough for the trait to show. Females (XX) need two copies of the recessive allele to show the trait one from each parent. This is why haemophilia, colour blindness, and similar X-linked traits appear far more often in males than in females.
Question 25
The physical appearance of an organism resulting from its genetic makeup is its:
A. Phenotype B. Genotype C. Allele D. Chromosome
Answer: A. Phenotype
Explanation: The genotype is an organism’s actual genetic composition the alleles it carries (e.g., Tt). The phenotype is the observable expression of those genes what you can actually see or measure (e.g., tall). Two organisms can have different genotypes (TT and Tt) but the same phenotype (both tall, because T is dominant). JAMB tests the genotype-phenotype distinction almost every year.
Section F: Reproduction (Paired Well with Genetics Revision)
Question 26
Which type of reproduction produces offspring that are genetically identical to the parent?
A. Sexual reproduction B. Asexual reproduction C. Cross-pollination D. Fertilisation
Answer: B. Asexual reproduction
Explanation: Asexual reproduction involves only one parent and no fusion of gametes. The offspring are produced by mitosis, making them genetically identical to the parent (clones). Examples include binary fission in bacteria, budding in yeast, vegetative propagation in plants, and spore formation in fungi. Sexual reproduction, which involves two parents and the fusion of gametes, produces genetic variation in offspring.
Question 27
The structure in which the fertilised egg develops into a foetus during human pregnancy is the:
A. Ovary B. Fallopian tube C. Cervix D. Uterus
Answer: D. Uterus
Explanation: Fertilisation occurs in the fallopian tube (oviduct), but the fertilised egg (zygote) travels to the uterus, where it implants in the thick uterine wall and develops into an embryo and then a foetus over approximately nine months. The uterus provides nourishment, protection, and support for the developing foetus. JAMB regularly tests human reproductive system structures and their specific functions.
Question 28
During the menstrual cycle, ovulation occurs when:
A. The uterine lining is shed B. Progesterone level is highest C. A mature egg is released from the ovary D. Fertilisation takes place
Answer: C. A mature egg is released from the ovary
Explanation: Ovulation is the release of a mature egg (ovum) from a Graafian follicle in the ovary. In a 28-day cycle, ovulation typically occurs around day 14. It is triggered by a surge in luteinising hormone (LH). After ovulation, the egg moves into the fallopian tube, where it may be fertilised. If fertilisation does not occur, the uterine lining breaks down and menstruation begins.
Section G: Evolution and Variation (Concept Questions)
Question 29
Which scientist proposed that evolution occurs through natural selection?
A. Gregor Mendel B. Louis Pasteur C. Charles Darwin D. Jean-Baptiste Lamarck
Answer: C. Charles Darwin
Explanation: Charles Darwin proposed the theory of evolution by natural selection in his 1859 work “On the Origin of Species.” The theory states that organisms with favourable variations are more likely to survive and reproduce, passing those traits to their offspring. Over many generations, this leads to changes in a population. Mendel discovered the laws of inheritance. Lamarck proposed the earlier (now discredited) theory of acquired characteristics.
Question 30
Continuous variation in a population is best represented by:
A. Blood groups B. Tongue-rolling ability C. Height and body weight D. Attached or free earlobes
Answer: C. Height and body weight
Explanation: Continuous variation involves traits that show a gradual range of values with no distinct categories height, weight, skin colour, and intelligence all fall here. Discontinuous variation involves clear, distinct categories with no intermediates blood groups (A, B, AB, O), tongue rolling (can or cannot), and earlobe attachment (attached or free) are examples. JAMB frequently tests this distinction using specific examples.
How to Study JAMB Biology Past Questions the Right Way
Now that you have worked through these questions, let me show you exactly how to use past questions to maximise your Biology score. I am not talking about reading quickly and moving on. I am talking about the method that actually produces results.
Step 1: Organise Your Revision by Topic, Not by Year
Jumping from 2013 questions to 2019 questions and back again is one of the most common mistakes I see candidates make. When you jump across years, you hide patterns from yourself. Instead, gather all past questions on Ecology together, work through them, then move to Cell Biology, then Genetics topic by topic. This approach lets you see how JAMB asks the same concept in different ways, and you will start recognising question structures before you finish reading them.
To make this approach even more targeted, use my JAMB Biology Topic Repetition Index (2016–2025) to identify which specific sub-topics within each area show up most often. That index is built from actual exam data, not guesswork.
Step 2: Understand the Explanation, Not Just the Answer
Memorising option C will fail you in the exam hall. JAMB tests biological reasoning, not rote recall. For every question you practise, ask yourself two things: why is the correct answer correct, and why are the other three options wrong? When you understand the reasoning behind the answer, you can apply that reasoning to a question you have never seen before and that is what separates candidates who score 60 from those who score 75.
Step 3: Pay Special Attention to JAMB Trap Questions
JAMB deliberately constructs questions to mislead unprepared candidates. Common traps include: the pulmonary vein carrying oxygenated blood (contradicting the usual vein rule), osmosis being confused with diffusion, and the pancreasproducing blood sugar hormones (not the liver, as many assume). When you review past questions, flag any question where you hesitated those are the patterns JAMB will use against you again.
Step 4: Practise Under Real Exam Conditions
Knowledge without speed is dangerous in a CBT exam. JAMB gives you four subjects in a single sitting, and you need to manage your time carefully. When you are close to your exam date, practise full Biology sections using a timer. Set 20 to 25 minutes for 40 Biology questions and practice finishing within that window. This is how you build the speed and the calm that the real exam demands.
If you want to understand exactly how JAMB calculates your score and how your Biology performance contributes to your total, read my full guide on JAMB Score Calculation 2026 it will give you a clear picture of how marks are awarded per question.
Step 5: Combine Past Questions with the Official JAMB Syllabus
Past questions are powerful, but they must be paired with the official JAMB Biology syllabus. The syllabus tells you every topic you are expected to know. Past questions show you which of those topics JAMB actually tests. Together, they give you a complete preparation strategy: study the syllabus for coverage, use past questions for focus. Students who rely on past questions alone sometimes miss newer topics that JAMB introduced recently. The combination is what works.
Common Mistakes JAMB Biology Candidates Make
I have watched hundreds of candidates approach JAMB Biology the wrong way. These are the mistakes that cost people the most marks avoid every one of them.
Reading without practising. Reading your Biology textbook thoroughly is good, but it is not the same as exam preparation. If you are not sitting down and answering questions under timed conditions, you are not preparing for a multiple-choice exam you are preparing for an essay exam that does not exist.
Ignoring diagrams. JAMB consistently uses diagram-based questions in Biology. Candidates who have never practised identifying labelled structures the parts of a cell, a section through a leaf, the human digestive tract are caught completely off guard. Every time you study a Biology topic, draw the diagram yourself and label it from memory.
Skipping Ecology and Genetics. These two topics alone account for a significant portion of Biology marks in every JAMB paper I have analysed. Some candidates skip them because they seem complex. That is exactly the wrong decision. Master Ecology and Genetics first, then use the remaining time for the other topics.
Stopping when you get the answer right. Getting a correct answer during practice does not mean you understand the concept deeply enough for the exam. JAMB can reword a question entirely and still be testing the same idea. The only way to be safe is to understand the biology behind the answer, not just the answer itself.
Leaving the wrong syllabus topics for last. Many candidates plan to revise everything but then run out of time. Because JAMB Biology questions follow predictable patterns, candidates who have not gone through the topic repetition data waste valuable revision time on areas that rarely appear. Prioritise what actually appears then handle the rest.
How Your JAMB Biology Score Contributes to Admission
It is important to understand that your JAMB score is just one part of the admission process. Different universities and courses have different cut-off marks, and some schools place extra weight on your O’Level grades alongside your UTME score. A strong Biology score is especially critical if you are applying for medicine, pharmacy, nursing, agriculture, or any of the biological sciences.
If you are applying for a science-based course, scoring below 60 in Biology will significantly reduce your chances of admission even if your overall JAMB total is decent. This is because most health and science faculties look at individual subject scores, not just the total.
For a clear breakdown of how JAMB scoring works and what scores are needed for competitive courses, read my detailed guide on JAMB Scoring Pattern 2026. If you are targeting engineering, see the specific requirements in my post on JAMB Cut-Off Mark for Engineering Courses 2026. And if medicine is your goal, see what you are truly up against by reading what the JAMB cut-off mark for medicine in Nigeria actually requires from candidates.
What to Do on JAMB Exam Day for Biology
All the preparation in the world will not help you if you arrive at your CBT centre unprepared on the day itself. Biology is typically the subject where candidates either gain or lose the most marks, simply because of how they manage their attention and time.
On exam day, do not start with Biology if it is your weakest subject. JAMB allows you to answer questions from any subject first. Start with the subject where you are most confident, build your momentum, and return to Biology with a calm mind. When you reach a Biology question you are unsure about, do not spend more than 30 seconds on it mark your best guess, move forward, and return to it at the end if you have time.
For the full breakdown of what to bring, what to wear, what to do the night before, and what happens inside the CBT centre, read my complete JAMB Exam Day Checklist 2026. Do not walk into that hall without reading it first.
And if you want a full strategy that covers all four JAMB subjects together Biology, Chemistry, Physics/Mathematics, and Use of English I put everything into one comprehensive plan in my JAMB, WAEC, NECO & NABTEB Zero-Failure Blueprint 2026. That post is built for candidates who want to pass every exam in one sitting.
Frequently Asked Questions About JAMB Biology Past Questions
Are JAMB Biology past questions the same every year?
Not exactly the same, but highly similar in concept and structure. My analysis of papers from 2010 to 2025 shows that between 25% and 35% of questions in any given year are direct repeats or near-identical to questions from previous years. More than 80% test concepts that have appeared before. This is why past questions are so valuable you are studying a documented examination pattern, not guessing.
How many years of JAMB Biology past questions should I study?
I recommend studying at least the last ten years of past questions from 2015 to 2025. Ten years gives you enough data to see which topics repeat consistently and which topics are less predictable. If you have more time, studying from 2010 gives you an even stronger foundation, especially for Ecology and Genetics questions that JAMB has recycled several times.
Can I score 70 or above in JAMB Biology using past questions alone?
Yes, if you study past questions with full explanations and combine them with the official JAMB Biology syllabus. Past questions alone, without understanding the reasoning behind the answers, will take you only so far. But when you understand why each answer is correct, you can handle new questions with similar logic. Candidates who follow this approach consistently achieve Biology scores of 65 to 80 in UTME.
Are JAMB Biology past questions available for free?
Yes. Verified JAMB Biology past questions are available free of charge on several official and reputable educational platforms in Nigeria, including this site. Be cautious of platforms that sell past questions at a cost the questions themselves are public examination records. What you should pay for, if anything, is quality explanations and analysis, not the raw questions.
Which Biology topics should I focus on most for JAMB 2026?
Based on my analysis of papers from 2016 to 2025, the five topics you must prioritise for JAMB 2026 are: Ecology (food chains, food webs, population, succession), Genetics (Mendelian crosses, blood groups, sex-linkage), Cell Biology (organelles, osmosis vs diffusion), Human Physiology (digestive, excretory, and circulatory systems), and Plant Physiology (photosynthesis, transpiration, transport systems). These five areas have collectively accounted for more than 70% of Biology questions in recent years.
Is Biology compulsory for all JAMB candidates?
Biology is compulsory for candidates applying for science-based and health-related courses such as Medicine, Pharmacy, Nursing, Agriculture, Biochemistry, Microbiology, and related fields. It is not compulsory for pure sciences like Physics or Mathematics, nor for art or commercial courses. Always confirm your required subject combination using the official JAMB brochure or consult your chosen university’s departmental requirements before registration.
Conclusion: Your Next Step Starts Here
JAMB Biology is not a subject that rewards the student who reads the most. It rewards the student who reads the right things, in the right order, with the right level of understanding. Past questions from 2010 to 2025 are your clearest guide to what the right things are because they show you exactly how JAMB has tested Biology year after year.
I have given you 30 fully explained questions in this post covering all six major Biology topic areas. I have shown you the study strategy that works, the traps JAMB sets, and the mistakes you must avoid. Everything here is built around the actual patterns of a real exam, not assumptions.
Your next step is to continue building on this foundation. Start by reading the JAMB Biology Topic Repetition Index (2016–2025) to know exactly which sub-topics to prioritise. Then confirm how your Biology score fits into your overall UTME strategy using the JAMB Score Calculation 2026 guide. When you are close to your exam date, run through the JAMB Exam Day Checklist so you do not leave anything to chance.
Biology is not hard. Biology is familiar once you have studied the right patterns. And now, you have.
References
Joint Admissions and Matriculation Board (JAMB)
Nigerian Educational Research and Development Council (NERDC)
Written by Massodih Okon, Senior Exam Preparation Researcher. Massodih holds a First Degree in Geography and a Master’s Degree in Urban and Regional Planning from the University of Uyo. He has over ten years of experience developing examination preparation resources for Nigerian students across JAMB, WAEC, NECO, and NABTEB. His research has been published in the Journal of Environmental Design, Faculty of Environmental Studies, University of Uyo (Volume 16, No. 1, 2021).