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JAMB UTME 2022

JAMB Biology 2022 past questions

5 objective questions from the 2022 JAMB Biology paper. Answer each one, then reveal the answer and explanation.

All JAMB Biology past questions

  1. Question 1

    Reproduction

    The transfer of pollen from the anther to the stigma is

    1. Option A: pollination
    2. Option B: fertilisation
    3. Option C: dispersal
    4. Option D: germination
    Show the answer to question 1

    Answer: A, pollination

    That is the definition of pollination.

  2. Question 2

    Genetics

    In garden peas, the allele for yellow seeds (Y) is dominant over the allele for green seeds (y). What is the expected phenotypic ratio of the offspring of a cross between Yy and Yy parents?

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

    Answer: B, 3 yellow seeds : 1 green seeds

    Yy × Yy gives three offspring with at least one Y to every yy: 3 : 1.

  3. Question 3

    Nutrition

    A lack of vitamin C in the diet causes

    1. Option A: scurvy
    2. Option B: rickets
    3. Option C: beriberi
    4. Option D: night blindness
    Show the answer to question 3

    Answer: A, scurvy

    Vitamin C deficiency causes scurvy.

  4. Question 4

    Classification

    Which of the following animals is a bird?

    1. Option A: penguin
    2. Option B: crocodile
    3. Option C: salamander
    4. Option D: seahorse
    Show the answer to question 4

    Answer: A, penguin

    The penguin is a bird (class Aves).

  5. Question 5

    Excretion and respiration

    The functional unit of the kidney is the

    1. Option A: nephron
    2. Option B: neuron
    3. Option C: alveolus
    4. Option D: villus
    Show the answer to question 5

    Answer: A, nephron

    Each nephron filters blood.

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