Jamb Biology Past Questions and Answers

Question 146:

• JAMB 1979

Root hair have their origin from

A. Endodermis
B. Pericycle
C. Cortex
D. Epidermis
E. Xylem

Question 147:

• JAMB 1979

The element nitrogen is utilized in

A. Formation of ATP
B. Formation of glucose
C. Formation of amino acid
D. Photosynthesis
E. None of the above

Question 148:

• JAMB 1979

Magnesium is utilized in the formation of

A. ATP
B. Glucose
C. Amino acids
D. Chlorophyll
E. Fats

Question 149:

• JAMB 1979

One significant difference between roots and stem is that

A. Branch roots originate in the pericycle while stem do not
B. Stems are always bove the ground while root are always below the ground
C. Stems are positively geotropic while roots are negatively geotropic
D. Stem are sometime used for storage while roots are never used
E. Stems grow in both length and circumference while root grow only in length

Question 150:

• JAMB 1979

In the figure above the cell which controls the opening and closing of stomatal pore is

A. 1
B. 2
C. 3
D. 4
E. 5