Question 616:

• JAMB 1989

The lumbar vertebra when compared with a thoracic vertebra has a

A. Longer neural spines
B. Wider neural canal
C. Thicker centrum
D. Shorter transverse process

Question 617:

• JAMB 1989

Wind pollinated flowers usually have

A. Rough pollen grains
B. Sticky stigmas
C. Small and short stigmas
D. Long styles

Question 618:

• JAMB 1989

The components of castor oil seed and the maize grain are similar EXCEPT for the

A. Number of cotyledons
B. Location of the embryo
C. Number of radicles
D. Number of plumules

Question 619:

• JAMB 1989

A corn differs from a bulb in that

A. Its stem is the main food storage organ
B. It has a flattened discshaped stem
C. Buds are absent in the axils of the leaves
D. Adventitious roots are present

Question 620:

• JAMB 1989

Exponential increase in the population of an organism is a characteristic feature off

A. Binary fission
B. Sexual reproduction
C. Budding
D. Vegetative propagation