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WAEC WASSCE 2015

WAEC Biology 2015 past questions

6 objective questions from the 2015 WAEC Biology paper. Answer each one, then reveal the answer and explanation.

All WAEC Biology past questions

  1. Question 1

    Excretion and respiration

    In mammals, urea is formed in the

    1. Option A: kidney
    2. Option B: liver
    3. Option C: bladder
    4. Option D: skin
    Show the answer to question 1

    Answer: B, liver

    The liver deaminates excess amino acids into urea.

  2. Question 2

    Genetics

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

    1. Option A: 3 RR : 1 rr
    2. Option B: 1 RR : 1 rr
    3. Option C: 1 RR : 2 Rr : 1 rr
    4. Option D: 2 RR : 1 Rr : 1 rr
    Show the answer to question 2

    Answer: C, 1 RR : 2 Rr : 1 rr

    Rr × Rr gives RR, Rr, Rr, and rr: a 1 : 2 : 1 genotypic ratio.

  3. Question 3

    Reproduction

    Sperm are produced in the

    1. Option A: prostate gland
    2. Option B: urethra
    3. Option C: seminal vesicle
    4. Option D: testis
    Show the answer to question 3

    Answer: D, testis

    The testes produce sperm.

  4. Question 4

    Nutrition

    The mode of nutrition of a mushroom is

    1. Option A: parasitic
    2. Option B: saprophytic
    3. Option C: holozoic
    4. Option D: autotrophic
    Show the answer to question 4

    Answer: B, saprophytic

    Mushrooms feed on dead organic matter.

  5. Question 5

    Classification

    Which of these animals belongs to the class Pisces?

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

    Answer: B, shark

    The shark is a fish (class Pisces).

  6. Question 6

    Cell biology

    Which organelle is the site of protein synthesis?

    1. Option A: Lysosome
    2. Option B: Chloroplast
    3. Option C: Centriole
    4. Option D: Ribosome
    Show the answer to question 6

    Answer: D, Ribosome

    Ribosomes assemble proteins.

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