Jamb Biology 2002 Past Questions and Answers

Question 16:

• JAMB 2002

In a field experiment, the frequency of water leaf was observed to be 48 after 20 tosses of a 2m² quadrat. What is the density of the plants in the field?

A. 1.2 per m²
B. 2.4 per m²
C. 4.8 per m²
D. 9.6 per m²

Question 17:

• JAMB 2002

The supporting tissue in xylem is most poorly developed in

A. Mangrove swamp plants
B. Grassland plants
C. Submerged water plants
D. Desert plants

Question 18:

• JAMB 2002

The addition of lime to clayed soil serves to

A. Aid water retention
B. Close up the texture
C. Prevent water logging
D. Improve capillary action

Question 19:

• JAMB 2002

The excessive use of agro-chemicals could lead to the pollution of

A. The lithosphere
B. The atmosphere
C. Fresh water
D. Space

Question 20:

• JAMB 2002

In a population study using the transect method, a student is likely to record the highest number of species in

A. A tropical rain forest
B. A guinea savanna
C. A sahel savanna
D. An estuarine swamp