Waec Biology 2012 Past Questions and Answers

Question 6:

• WAEC 2012

In which of the following multicellular organisms is-interdependence of cells maintained?

A. Spirogyra
B. Volvox
C. Eudorina
D. Pandorina

Question 7:

• WAEC 2012

Which of the following processes occurs in the second phase of meiosis?

A. Homologous chromosomes separate
B. Two daughtercells are formed
C. Fertilization occurs
D. Segregation of genes occurs

Question 8:

• WAEC 2012

The muscle cell fluid of an athlete was tested immediately after a 1 O m race and was found to contain a high
concentration of lactic acid. Explain what could have caused this. The

A. Athlete must have eaten food containing lactic acid just before the race
B. Athlete must have injected lactic acid into his blood just before the race
C. Athletes muscle must have carried out anaerobic respiration during the race
D. Athlete must have inhaled lactic acid from the environment during the race

Question 9:

• WAEC 2012

The graph above represents the growth pattern of an animal. Which of the following groups of animals shows this
pattern of growth?

A. Cestoda
B. Reptilia
C. Amphibia
D. Insecta

Question 10:

• WAEC 2012

The pulmonary circulation involves movement of the blood to and from the

A. Brain
B. Kidney
C. Liver
D. Lungs