Key Points in Biology for JAMB 2026/2027 With 60 Questions and Answers

Key Points in Biology for JAMB 2026/2027:- If there is one science subject that many JAMB candidates find bulky, it is Biology. Some fear it because the notes are long, some ignore it because the topics are many, but the wise ones know something important. JAMB Biology is not difficult. It only requires the right key points, clear understanding, and steady revision. Once you know the areas JAMB repeats every year, scoring above 70 becomes very possible.

This guide contains the most important JAMB Biology Key Points, simple explanations, and a complete set of 60 Biology Questions and Answers. If you study this guide carefully, your confidence in Biology will grow quickly.

Why is JAMB Key Points in Biology Important

Key Points in Biology for JAMB 2026/2027 is important due to the following reasons;

• Biology is compulsory for all medical and life science courses
•  It covers many topics that JAMB repeats regularly
• It carries 40 questions, making it a major part of your total score
• It is easy to improve through short key points and diagrams
• Questions mostly come from familiar patterns

If you want a high score, Biology must be one of your strongest subjects.

Key Points in Biology for JAMB 2026/2027 With 60 Questions and Answers

1. Cell Biology

• Know the cell as the basic unit of life
• Study cell structure: nucleus, mitochondria, ribosomes, chloroplast
• Learn differences between plant and animal cells
• Understand diffusion, osmosis, and active transport
• Know cell division: mitosis and meiosis

2. Classification of Living Things

• Five kingdoms: Monera, Protista, Fungi, Plantae, Animalia
• Study binomial nomenclature
• Know vertebrates and invertebrates
• Learn major phyla: Arthropoda, Annelida, Mollusca
• Study classes of vertebrates: fish, amphibians, reptiles, birds, mammals

3. Nutrition

• Photosynthesis equation:
  Carbon dioxide + Water → Glucose + Oxygen
•  Know mineral deficiency symptoms in plants
• Study modes of nutrition: autotrophic and heterotrophic
• Human nutrition: carbohydrates, proteins, fats, vitamins, minerals
• Digestive system and enzyme functions

4. Ecology and Environment

• Study food chain and food web
• Learn ecological pyramids
• Understand energy flow in ecosystems
• Know population growth and limiting factors
• Learn types of habitats: aquatic and terrestrial

5. Genetics and Evolution

• Learn Mendel’s laws
•  Study dominant and recessive traits
• Understand genotype and phenotype
• Know sex-linked traits
• Study mutation and natural selection

6. Reproduction and Growth

• Asexual reproduction: budding, binary fission, vegetative propagation
• Sexual reproduction in plants and animals
• Human reproductive system
• Fertilization and development
• Hormones involved in reproduction

7. Anatomy and Physiology

• Human systems: circulatory, respiratory, excretory, digestive, nervous
• Structure of the heart and blood circulation
• Functions of the kidney and liver
• Reflex action and neurons
• Breathing mechanism

Areas JAMB Repeats Every Year/JAMB Areas of Concentration 

Below are the topic where JAMB utme question do come out, make sure you read these topics:

1. Cell structure
2. Photosynthesis
3. Genetics and Punnett square
4. Food chain and ecology
5.  Organ systems
6. Reproduction
7. Classification
8. Diffusion and osmosis
9. Disease and immunity
10. Evolution

JAMB Key Points In Biology 60 Practice Questions and Answers

Below are 60 practice questions divided into sections.

PART I: JAMB Key Points In Biology

Cell Biology (10 Questions)

1. What is the basic unit of life?
   Answer: Cell
2. Which organelle controls cell activities?
   Answer: Nucleus
3. Which organelle is responsible for respiration?
   Answer: Mitochondrion
4. Diffusion is the movement of particles from what to what?
   Answer: High concentration to low concentration
5. Osmosis involves the movement of water through what?
   Answer: Semi permeable membrane
6. Photosynthesis occurs in which organelle?
   Answer: Chloroplast
7. What is the product of mitosis?
   Answer: Two identical daughter cells
8. What is the product of meiosis?
   Answer: Four haploid cells
9. Ribosomes are responsible for what?
   Answer: Protein synthesis
10. The outer layer of a plant cell is called what?
    Answer: Cell wall

PART II: JAMB Key Points In Biology 

Classification and Diversity (10 Questions)

11. The scientific name of an organism consists of what?
    Answer: Genus and species
12. Which kingdom contains bacteria?
    Answer: Monera
13. Which phylum includes insects?
    Answer: Arthropoda
14. Birds belong to which class?
    Answer: Aves
15. Which organisms have jointed legs?
    Answer: Arthropods
16. Which vertebrates lay soft shelled eggs?
    Answer: Reptiles
17. Mushrooms belong to which kingdom?
    Answer: Fungi
18. Which group includes flowering plants?
    Answer: Angiosperms
19. Which class has hair and gives birth to young ones?
    Answer: Mammals
20. Fish breathe through what?
    Answer: Gills

PART III: JAMB Key Points In Biology

Nutrition and Physiology (10 Questions)

21. The process by which green plants make food is called what?
    Answer: Photosynthesis
22. The element needed for chlorophyll formation is what?
    Answer: Magnesium
23. Carbohydrates are mainly used for what in the body?
    Answer: Energy
24. Proteins are used for what?
    Answer: Growth and repair
25. Enzymes are what type of molecules?
    Answer: Proteins
26. The organ that pumps blood is what?
    Answer: Heart
27. The functional unit of the kidney is called what?
    Answer: Nephron
28. The exchange of gases occurs in what structure?
    Answer: Alveoli
29. The largest organ in the human body is what?
    Answer: Skin
30. The liver produces what substance?
    Answer: Bile

PART IV: JAMB Key Points In Biology

Ecology (10 Questions)

31. A group of organisms of the same species in a habitat is what?
    Answer: Population
32. The living components of an ecosystem are called what?
    Answer: Biotic factors
33. In a food chain, organisms that make their own food are what?
    Answer: Producers
34. Organisms that feed on dead materials are called what?
    Answer: Decomposers
35. A community and its environment form what?
    Answer: Ecosystem
36. The position of an organism in a food chain is called what?
    Answer: Trophic level
37. What type of pyramid shows the number of organisms?
    Answer: Pyramid of numbers
38. The main source of energy in ecosystems is what?
    Answer: Sunlight
39. Water pollution is mainly caused by what?
    Answer: Human activities
40. Overpopulation in animals may lead to what?
    Answer: Food shortage

PART V: JAMB Key Points In Biology

Genetics and Evolution (10 Questions)

41. The physical appearance of an organism is its what?
    Answer: Phenotype
42. The genetic makeup of an organism is its what?
    Answer: Genotype
43. A trait found more in males is called what?
    Answer: Sex linked trait
44. The unit of heredity is called what?
    Answer: Gene
45. Crossing a tall plant with a short plant in F1 will produce what?
    Answer: All tall plants
46. Mutation is a change in what?
    Answer: Genetic material
47. Evolution through natural selection was proposed by who?
    Answer: Charles Darwin
48. Blood group inheritance is an example of what?
    Answer: Multiple alleles
49. A cross between two identical alleles is called what?
    Answer: Homozygous
50. A sudden change in a gene is what?
    Answer: Mutation

ALSO READ: Key Points in Physics for JAMB 2026/2027 With 60 Practice Questions and Answers

PART VI: JAMB Key Points In Biology

Diseases, Reproduction and Mixed Questions (10 Questions)

51. Malaria is caused by what organism?
    Answer: Plasmodium
52. HIV destroys what cells?
    Answer: White blood cells
53. A plant that grows from a bud is doing what type of reproduction?
    Answer: Asexual reproduction
54. The organ where fertilization occurs in humans is what?
    Answer: Fallopian tube
55. The male sex hormone is what?
    Answer: Testosterone
56. Which disease is caused by lack of vitamin C?
    Answer: Scurvy
57. Which disease is caused by lack of iodine?
    Answer: Goitre
58. Which blood cells fight diseases?
    Answer: White blood cells
59. Which organism causes tuberculosis?
    Answer: Bacteria
60. The organ that stores urine is what?
    Answer: Bladder

Conclusion

JAMB Biology becomes easy when you understand the key points and revise regularly. The topics in this guide reflect the exact areas JAMB tests every year. The 60 questions and answers will help you prepare better and understand how Biology questions are structured. If you study consistently, practise past questions often, and revise these key points weekly, scoring above 70 becomes very possible.

Frequently Asked Questions (FAQs)

How many questions are in JAMB Biology?

JAMB Biology contains 40 questions covering cell biology, ecology, genetics, nutrition, evolution, and physiology.

Does JAMB repeat Biology questions?

Yes. JAMB repeats question patterns in photosynthesis, genetics, ecology, cell structure, and reproduction.

Is Biology hard in JAMB?

Biology becomes easy when you learn short key points, diagrams, and past questions.

How can I score high in JAMB Biology?

Study key points, read recommended textbooks, and practise past questions every week.

What are the most important topics in JAMB Biology?

Cell biology, genetics, ecology, photosynthesis, evolution, reproduction, and human systems.