Waec Biology 2011 Past Questions and Answers

Question 31:

• WAEC 2011

The conversion of glucose to starch in the leaf during the day principally

A. Enables photosynthesis
B. Prevents osmotic problems
C. Enables the leaf to store the starch
D. Enables glucose to be used up

Question 32:

• WAEC 2011

A purple colour was obtained when sodium hydroxide solution and a drop of copper sulphate solution were added to a food substance. The food substance is likely to be a

A. Carbohydrate
B. Fat
C. Protein
D. Sugar

Question 33:

• WAEC 2011

Which of the following enzymes is active in the duodenum?

A. Pepsin
B. Renin
C. Trypsin
D. Amylase

Question 34:

• WAEC 2011

The following organisms are producers except

A. Hibiscus
B. Mushroom
C. Cactus
D. Spirogyra

Question 35:

• WAEC 2011

Which of the following structures produces the greatest variety of digestive enzymes?

A. Salivary glands
B. Pancreas
C. Stomach
D. Colon