Waec 2015 Biology Past Questions And Answers
Which of the following resources is non-renewable?
- A. Forest reserve
- B. Mineral deposit
- C. Water
- D. Wild life
Which of the following statements about sex-linked characters is not true?
- A. They are usually borne on the X = chromosome
- B. They are more common in males
- C. Males are usually carriers
- D. They are not usually carried on the Y chromosomes
Soil erosion could be prevented by
- A. flooding a farmland
- B. cover-cropping
- C. deforestation
- D. leaving the soil bare
Use the diagram above to answer this question.
What of the following statements about the cross is correct?
- A. The gene for the spotted coat is recessive to the gen for the black coat
- B. Black coat and spotted coat are co-dominant
- C. The gene for the spotted coat is dominant over the gene for the black coat
- D. the genotype for the F1 are homozygous dominant
Which of the following cells is a specialized cell?
- A. Amoeba
- B. Plasmodium
- C. Guard cell
- D. Meristematic cell
Which of the following statements about human blood groups is not true?
- A. A is dominant over B
- B. O is recessive
- C. B is dominant over O
- D. A and B are co-dominant
(a) Explain how the leaf of a flowering plant is adapted for photosynthesis.
(b) Describe briefly the mode of feeding in tapeworm.
(c) Name one mineral element each needed for the proper functioning of :
(i) bones (ii) red blood cells
(iii) thyroid gland.
(d)(i) State three benefits of including roughages in the diet of humans.
(ii) State three reasons why proteins are important to humans.
A woman with blood group A gives birth to a child with blood group O. Which of the following blood groups cannot belong to the father?
- A. A
- B. B
- C. C
- D. O
Which of the following components make up an ecosystem?
- A. Decomposers, animals and non-living factors
- B. Living and non-living factors
- C. Plants and non-living factors
- D. Plants decomposers and non-living factors
(a) Copy and complete the table below
| Disease | one effect | one remedy |
| kidney stones | ||
| Nephritis | ||
| Diuresis |
(b) Make a labelled diagram of the carbon cycle.
(c)(i) What is Estuarine habitat?
(ii) Construct a food chain typical of an Estuarine habitat.
(d)(i) Name two diseases that can attack plant crops.
(ii) State three ways of controlling plant diseases.
(e) State four functions of a public health authority
(f) State four ways of maintaining food hygiene in the community.