Question 661:

• JAMB 1990

Which type of the following cells is thin-walled and living at maturity?

A. Collenchyma
B. Sieve tube
C. Xylem vessel
D. Sclerenchyma

Question 662:

• JAMB 1990

The mode of nutrition in which digestion is extracellular is

A. Holophytic
B. Parasitic
C. Holozoic
D. Saprophytic

Question 663:

• JAMB 1990

The first step in the process of photosynthesis is the

A. Activation of the chlorophyll
B. Photolysis of water
C. Reduction of carbondioxide
D. Formation of sugar

Question 664:

• JAMB 1990

Which of the following food substance will produce a brick-red colour when warmed with Benedict's solution?

A. Glucose
B. Starch
C. Egg white
D. Maltose

Question 665:

• JAMB 1990

The organ which secretes digestive enzymes as well as hormones is the

A. Liver
B. Salivary gland
C. Pancreas
D. Spleen