Waec Biology Past Questions and Answers

Question 426:

• WAEC 1995

An individual with blood group AB can receive blood from those in blood group(s)

A. AB only B
B. A and B only
C. B only
D. AB and O only
E. A, B, AB and O

Question 427:

• WAEC 1995

The statement that the environment determines which organisms survives to reproduce

A. Explains the theory of acquired characters
B. Supports Jean Lamarck’s theory of use and disuse
C. Supports the idea of survival of the fittest
D. Is refuted by fossil records
E. Implies that organisms modify their environment in order to survive.

Question 428:

• WAEC 1995

Which of the following is a definition of heredity? It is the

A. Non-resemblance of closely related organisms
B. Total absence of parental traits in offspring
C. Absence of variation in organisms
D. Transfer of characteristics from parents to offspring
E. Cause of infant mortality.

Question 429:

• WAEC 1995

Which of the following is not a reason why an offspring looks different from its parents?

A. Random reorganisation of chromosome during gamete formation
B. Existence of multiple alleles in organisms
C. Formation of chasmata in chromatids during meiosis
D. Mutation which gives rise to new combination of gene
E. Mitosis of the zygote produces new combination of chromosomes

Question 430:

• WAEC 1995

The pair of genes expressed in a heterozygous individual is described as

A. Allele
B. Chromatid
C. Dominant gene
D. Centrosome
E. Chromomere