Internal structure of a flowering plant - Jamb Biology Past Questions and Answers

Question 6:

• 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 7:

• 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

Question 8:

• JAMB 1979

The figure above is a section of a drupe. The part numbered 2 is

A. Epicarp
B. Endocarp
C. Mesocarp
D. Seed
E. Pericarp

Question 9:

• JAMB 1980

A true fruit is formed from

A. A fertilized ovary and other floral parts
B. A fertilized ovary
C. A fertilized ovary and calyx
D. A fertilized ovary and fleshy receptacle
E. An unfertilized ovary and other floral part

Question 10:

• JAMB 1980

A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that

A. The salt solution is more concentrated that the cell sap of the kolanut
B. The cell sap of the kolanut is more concentrated than the salt solution
C. The salt solution has the same concentration as the cell sap of the kolanut
D. Kolanut cell can multiply in water
E. The kolanut lost some water molecules to the salt solution