Skip to content

JAMB UTME 2021

JAMB Biology 2021 past questions

5 objective questions from the 2021 JAMB Biology paper. Answer each one, then reveal the answer and explanation.

All JAMB Biology past questions

  1. Question 1

    Nutrition

    A positive Benedict's test for a reducing sugar gives

    1. Option A: a blue-black colour
    2. Option B: a brick-red precipitate
    3. Option C: a purple colour
    4. Option D: a white precipitate
    Show the answer to question 1

    Answer: B, a brick-red precipitate

    Reducing sugars reduce Benedict's solution to a brick-red precipitate.

  2. Question 2

    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 2

    Answer: A, 3 hornlessness : 1 horns

    Hh × Hh gives three offspring with at least one H to every hh: 3 : 1.

  3. Question 3

    Transport

    The largest artery in the body is the

    1. Option A: pulmonary artery
    2. Option B: aorta
    3. Option C: vena cava
    4. Option D: carotid artery
    Show the answer to question 3

    Answer: B, aorta

    The aorta leaves the left ventricle.

  4. Question 4

    Ecology

    A group of organisms of the same species living in one area is a

    1. Option A: community
    2. Option B: ecosystem
    3. Option C: population
    4. Option D: habitat
    Show the answer to question 4

    Answer: C, population

    That is the definition of a population.

  5. Question 5

    Classification

    Which of the following animals is a mammal?

    1. Option A: bat
    2. Option B: ostrich
    3. Option C: crocodile
    4. Option D: salamander
    Show the answer to question 5

    Answer: A, bat

    The bat is a mammal (class Mammalia).

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