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Boost your confidence with JAMB Biology Past Questions And Answers PDF


    Looking to prepare for the upcoming JAMB exams? Get a leg up on success with help from our comprehensive list of Jamb biology past questions. Pick your way through questions and master those topics in no time!

    JAMB Biology Past Questions: A Valuable Resource for Exam Preparation

    When it comes to preparing for the Joint Admissions and Matriculation Board (JAMB) examination in Nigeria, having access to past questions and answers is important. Biology, being one of the core subjects, requires a comprehensive understanding of various concepts and topics.


    Therefore, having access to a list of past JAMB Biology questions from previous years, such as 2021, 2022, and 2023, can greatly enhance your exam preparation.

    The JAMB Biology past questions serve as a valuable resource for several reasons. Firstly, they provide insight into the exam pattern and the types of questions that have been asked in previous years.

    By familiarizing yourself with these questions, you can gain a better understanding of the topics that are frequently tested and the level of difficulty you can expect.

    This knowledge allows you to focus your study efforts on the areas that require more attention, increasing your chances of success.

    Secondly, studying past JAMB Biology questions enables you to identify recurring themes and concepts. Biology covers a wide range of topics, including cellular biology, genetics, ecology, and physiology, among others.

    By going through past questions, you can identify the areas that are frequently tested and ensure that you have a solid grasp of the underlying principles. This approach helps you prioritize your study time effectively and ensures that you are well-prepared for any question that may come your way.

    Furthermore, practicing with past JAMB Biology questions allows you to familiarize yourself with the format and structure of the exam.

    The JAMB examination often presents questions in a multiple-choice format, where you must choose the correct answer from a set of options.

    Practicing these types of questions, you can improve your ability to analyze information quickly and make accurate decisions under time constraints.

    This skill is essential for performing well in the actual exam.

     Frequent Repeated Jamb Biology past Questions and Answers

    Having said that, let’s move to the main business of the day which is Jamb Biology past questions and answers.

    However, Note: The questions and answers below are for practices. Use them for preparations for JAMB mock and JAMB examinations.


    1. In the angiosperm, the sieve tubes member are living non-nucleated, but they are usually accompanied by

    A. Cork cambium

    B. Phloem rays

    C. Vascular cambium

    D. Companion cells

    ANSWER: D (companion cells)

    1. Abscisic acid is a chemical that prepares plants for


    A. ripening fruits

    B. emergence of seedling

    C. for leaf fall

    D. reproduction

    ANSWER: C (leaf fall)


    1. In any population, any specific allele will mutate at one time or another, usually to a non-functional or harmful form. The proportion of gametes carrying new mutant alleles of a given locus is called


    A. the mutation rate

    B. the selection coefficient

    C. the relative fitness

    D. the lethal genotype

    ANSWER: D (lethal genotype)


    1. In Mosses, the saprophyte generation is highly prominent producing spores in a cone like                                                                                                                                                                                             A. gametophyte

    B. strobilus

    C. antheridium

    D. archegonium

    ANSWER: B (strobilus)


    1. When osmotic acid is boiled with a solution of food substances, it gave a colour black precipitate showing the presence of


    A. Fats and oil

    B. proteins

    C. amino acids

    D. starch

    ANSWER: A (fat and oil)


    1. plants adapted to life in salty march are known as     



    B. xerophytes

    C. halophytes

    D. epiphytes

    ANSWER: C (halophytes)


    1. A circulatory system that does not allow mixing of oxygenated blood in the mammalian heart is referred to as


    A. open

    B. haemocoelic

    C. single

    D. closed

    ANSWER: D (closed)

    8 In a pyramid of numbers, it is common to have with the smallest of individual

    A. secondary consumers

    B. tertiary consumers

    C. primary consumers

    D. primary producers

    ANSWER: B (tertiary consumers)

    1. One of these animal groups contain acoelomate member

    A. Mollusca

    B. Coelenterata

    C. Arthropoda

    D. reptilian

    ANSWER: B (Coelenterata)

    1. A flower that has both stamen and pistil is said to be

    A. perfect

    B. imperfect

    C. pistillate

    D. staminate.

    ANSWER: A (perfect flower)

    1. Sting cells are normally found in

    A. flatworm

    B. Hydra

    C. Snails

    D. Paramecium

    ANSWER: B (hydra)

    1. The annulus of fern sporangium helps in

    A. spore dispersal

    B. conduction of mineral salt

    C. trapping of light energy

    D. water retention

    ANSWER: A (spore dispersal)

    1. The respiratory organ in the land snail is

    A. Radula

    B. mantle

    C. tentacle

    D. foot

    ANSWER: B (mantle)

    1. The gill rakers of fishes take part in


    A. eeding

    B. respiration

    C. swimming

    D. diffusion

    ANSWER: A (feeding)


    1. The element common to protein, carbohydrate, and lipid is

    A. hydrogen

    B. sulphur

    C. Nitrogen

    D. phosphorous

    ANSWER: A (hydrogen)

    1. Which of the following is a plant excretory product?

    A. Oil

    B. cytokinin

    C. resin

    D. amino acid

    ANSWER: C (resin)

    1. Epigeal germination can be found in

    A. sorghum

    B. maize

    C. millet

    D. groundnut

    ANSWER: D (groundnut)

    1. Which of the following characters is NOT sex-linked

    A. Rivers blindness

    B. Baldness

    C. Haemophilia

    D. Colour blindness

    ANSWER: A (river blindness)

    1. Which of the following diseases can be prevented by inoculation?

    A. Syphilis

    B. malaria fever

    C. tuberculosis

    D. acquired immune deficiency syndrome

    ANSWER: C (tuberculosis)

    1. Nitrogen-fixing micro-organism in leguminous plants live symbiotically in the

    A. root noodles

    B. tap roots

    C. branch roots

    D. root hairs

    ANSWER: A (root nodules)

    1. Frogs and toads are classified together in the vertebrate class as?

    A. Aves

    B. Reptiles

    C. Amphibians

    D. mammalian

    ANSWER: C (Amphibians)

    1. Blood clotting is helped by

    A. Na+

    B. K+

    C. Ca2+

    D. Mg2+

    ANSWER: C (Ca2+ )

    1. On storage, the sweetness of corn is lost. This is because

    A. polysaccharide is reconverted into soluble sugar

    B. concentration of sugar increases due to storage

    C. conversion of sugar to polysaccharide

    D. enzymes responsible for the conversion are destroyed

    ANSWER: A (polysaccharide is reconverted into soluble sugar)

    1. One of these arthropods is a carrier of viruses and other micro-organisms

    A. termite

    B. Ant

    C. Bee

    D. flea

    ANSWER: D (flea)


    1. The enzyme responsible for curdling of milk in infants is called

    A. pepsin

    B. renin

    C. trypsin

    D. urease

    ANSWER: B (renin)

    1. In mammals, the function of sebaceous gland is to

    A. produce sweat

    B. produce an oily substance

    C. secrete water

    D. secrete sodium

    ANSWER: B (produce an oily substance)

    1. movement and positions of the head in man are detected by the

    A. Cochlea

    B. Malleus

    C. Utriculus

    D. semicircular canals

    ANSWER: D (semi-circular canals)


    1. The maize grain is fruit and not a seed because it

    A. has a large endorsperm

    B. is formed from an ovary

    C. is a monocotyledon

    D. has no plumule and radicals

    ANSWER: B (is formed from an ovary)


    1. The character by which an organism is recognized is termed its

    A. phenotype

    B. genotype

    C. anatomy

    D. morphology

    ANSWER: A (phenotype)

    1. In mammals, stimulus is transferred from the receptor to the central nervous system through the
    1. moto neurons

    A. moto neurons

    B. effector muscle

    C. dendrites

    D. sensory neurons

    ANSWER: D (sensory neurons)

    1. Germinations which result in cotyledons being brought above ground is called?

    A. hypocotyls

    B. epicotyls

    C. epigeal

    D. hypogeal

    ANSWER: C (epigeal)

    1. Which of the food chains are the correct sequences?

    A. weeds, tadpoles, beetle, man

    B. weeds, tadpoles, fish, beetle, man

    C. tadpoles, beetles, weeds, man, fish

    D. man, fish, beetles, weeds

    ANSWER: B ( weeds, tadpoles, fish, beetle, man)

    1. The primary and secondary hosts respectively of bilharzia are

    A. fish and man

    B. man and dog

    C. snail and man

    D. man and snail

    ANSWER: D (man and snail)

    1. The origin of mineral particles in the seed is

    A. humus

    B. water

    C. micro-organism

    D. organic matter

    ANSWER: D (organic matter)

    1. The initial volume of water in bag of dry soil was 50ml and the amount that drained through was 35ml, the percentage water content of the fully soak soil is therefore

    A. 46.7

    B. 25.0

    C. 20.0

    D. 30.0

    ANSWER: D ( 30%)

    1. From the following list of types of mutation, identify the one that is not hereditary
    1. genetic mutation

    A. genetic muttation

    B. somatic mutation

    C. germinal mutation

    D. gametic mutation

    ANSWER: B (somatic mutation)

    1. In a cell, digestive enzymes mostly occur in

    A. ribosomes

    B. lysosomes

    C. mitochondria

    D. plastids

    ANSWER: B (lysosomes)

    1. which of the following habitats form the highest diversity of living species?

    A. tropical rain forest

    B. savannah grassland

    C. desert

    D. tropical forests

    ANSWER: A (tropical rainforest)

    1. Lack of protein in the diet of children manifest easily because

    A. children do not store up protein efficiently

    B. it is difficult for children to chew meat

    C. protein supplies energy to the body

    D. protein is responsible for growth and repairs

    ANSWER: D ( protein is responsible for growth and repairs )

    1. Growth response of a plant to light gradient is known as

    A. nastic movement

    B. geotropism

    C. hydrotropism

    D. phototropism

    ANSWER: D (phototropism)


    These resources are designed to help you familiarize yourself with the exam’s content and structure, ensuring that you are adequately prepared for the challenges ahead.

    In conclusion, utilizing JAMB Biology past questions is a wise strategy for exam preparation.

    studying these questions, you can gain insight into the exam pattern, identify recurring concepts, and familiarize yourself with the format and structure of the exam.

    Remember to approach your preparation in a systematic manner, focusing on areas that require more attention.

    With diligent practice and a thorough understanding of the subject matter, you can confidently tackle the JAMB Biology examination and achieve the desired results. Good luck!

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