Waec Biology 1991 Past Questions and Answers

Question 26:

• WAEC 1991

Which of the following is not seen in the transverse section of a young monocotyledonous stem?

A. Parenchyma
B. Phloem
C. Xylem
D. Cambium
E. Sclerenchyma

Question 27:

• WAEC 1991

The bicuspid valve is located between

A. Left auricle and left ventricle
B. Right auricle and right ventricle
C. Left and right ventricle
D. Left and right auricle
E. Left auricle and right ventricle

Question 28:

• WAEC 1991

During which o the following processes is food for animals produced?

A. Photosynthesis
B. Respiration
C. Nutrition
D. Digestion
E. Transportation

Question 29:

• WAEC 1991

Pellagra can be prevented by taking food rich in

A. Vitamin A
B. Vitamin B
C. Vitamin D
D. Calcium
E. Iodine

Question 30:

• WAEC 1991

In testing for a reducing sugar, the food substance is usually warmed with

A. Sulphuric acid
B. Million's reagent
C. Sudan III
D. Benedicts's solution