FORM AND FUNCTIONS - Jamb Biology Past Questions and Answers

Question 516:

• JAMB 1995

Secondary thickening in dicotyledonous stem is controlled by the

A. Xylem
B. Phloem
C. Cambium
D. Pericycle

Question 517:

• JAMB 1995

2H₂ → 2H₂ + O_2(g). The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur?

A. Enzyme and light energy
B. Carbondioxide and light energy
C. Light energy and cholorphyll
D. Chlorophyll and enzyme

Question 518:

• JAMB 1995

In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of

A. Washed sand
B. Saw dust
C. Cow dung
D. Clay soil

Question 519:

• JAMB 1995

Which vitamin plays an important role in blood clotting?

A. Vitamin A
B. Vitamin K
C. Vitamin B₁₂
D. Vitamin C

Question 520:

• JAMB 1995

The mammalian organ which acts both as a digestive and as an endocrine organ is the

A. Oesophagus
B. Liver
C. Pancreas
D. Spleen