Skip to content

JAMB UTME 2018

JAMB Biology 2018 past questions

6 objective questions from the 2018 JAMB Biology paper. Answer each one, then reveal the answer and explanation.

All JAMB Biology past questions

  1. Question 1

    Classification

    Identify the reptile among the following animals.

    1. Option A: tortoise
    2. Option B: eagle
    3. Option C: newt
    4. Option D: mudskipper
    Show the answer to question 1

    Answer: A, tortoise

    The tortoise is a reptile (class Reptilia).

  2. Question 2

    Transport

    Which blood components help blood to clot?

    1. Option A: Red blood cells
    2. Option B: Platelets
    3. Option C: Lymphocytes
    4. Option D: Phagocytes
    Show the answer to question 2

    Answer: B, Platelets

    Platelets start clotting.

  3. Question 3

    Genetics

    In garden peas, the allele for round seeds (R) is dominant over the allele for wrinkled seeds (r). What is the expected phenotypic ratio of the offspring of a cross between Rr and Rr parents?

    1. Option A: 1 round seeds : 1 wrinkled seeds
    2. Option B: All round seeds
    3. Option C: All wrinkled seeds
    4. Option D: 3 round seeds : 1 wrinkled seeds
    Show the answer to question 3

    Answer: D, 3 round seeds : 1 wrinkled seeds

    Rr × Rr gives three offspring with at least one R to every rr: 3 : 1.

  4. Question 4

    Genetics

    In cattle, the allele for hornlessness (H) is dominant over the allele for horns (h). What is the expected phenotypic ratio of the offspring of a cross between Hh and hh parents?

    1. Option A: 3 hornlessness : 1 horns
    2. Option B: 1 hornlessness : 1 horns
    3. Option C: All hornlessness
    4. Option D: All horns
    Show the answer to question 4

    Answer: B, 1 hornlessness : 1 horns

    Hh × hh gives equal numbers of Hh and hh: 1 : 1.

  5. Question 5

    Ecology

    A relationship in which both organisms benefit is called

    1. Option A: parasitism
    2. Option B: mutualism
    3. Option C: commensalism
    4. Option D: predation
    Show the answer to question 5

    Answer: B, mutualism

    In mutualism both partners gain.

  6. Question 6

    Cell biology

    The movement of water molecules from a dilute solution to a concentrated one through a semi-permeable membrane is

    1. Option A: diffusion
    2. Option B: active transport
    3. Option C: plasmolysis
    4. Option D: osmosis
    Show the answer to question 6

    Answer: D, osmosis

    That is the definition of osmosis.

Practise JAMB Biology on SchoolEasy CBT

In SchoolEasy, students answer timed questions on screen, see an explanation for every answer, and track their progress topic by topic. Teachers turn past questions into class tests that mark themselves.

Practise in the appRequest a demo for your school

School management made effortless.

We strive to build the best school management software for schools from all over the world.

Available soon on all digital platforms

Download on theApp StoreGet it onGoogle Play