Waec Biology 2008 Past Questions and Answers

Question 51:

• WAEC 2008

The effective cells involved in sickle-cell anaemia disease are

A. Phagocytes
B. Lymphocytes
C. Erythrocytes
D. Thrombocytes

Question 52:

• WAEC 2008

What does the chemical composition of the genetic material of all living organisms consist of?

A. Deoxyribonucleic acid
B. Adenosine diphosphate
C. Adenosine triphosphate
D. Follicle stimulating hormone,

Question 53:

• WAEC 2008

What of the following occurrences is not a feature of meiosis?

A. Formation of four haploid cells
B. Two successive nuclear cell division
C. Pairing of homologous chromosomes at prophase
D. Formation of two diploid cell

Question 54:

• WAEC 2008

Which of the following diseases is commonly observed in human males and is sex-linked?

A. Beriberi
B. Down’s syndrome
C. Sickle-cell anaemia
D. Colour blindness

Question 55:

• WAEC 2008

The resemblance of a palatable insect to a poisonous insect is an example of

A. A chemical deterrent to a predator
B. An escape from the predator camouflage
C. An escape from the predator by mimicry
D. A defense against the predator by warming coloration