ECOLOGY - Jamb Biology Past Questions and Answers

Question 46:

• JAMB 1984

The transect method can be used in ecology to show the

A. Number of plants and animals in a habitat
B. Population of a particular plant species
C. Distribution of organisms along a line
D. Heights of trees in section of a forest
E. Number of young plants across a forest

Question 47:

• JAMB 1984

Which of the following is NOT regarded as a pollutant on land or in the air?

A. Smoke
B. Noise
C. Sulphur (IV) oxide
D. Carbon monoxide
E. Nitrogen

Question 48:

• JAMB 1984

Which of the following groups of factors is completely abiotic?

A. Salinity, tide, plankton, turbidity
B. Temperaure, pH, soil, insect
C. Wind, altitude, humidity, light
D. Conifers, wind, pH, rainfall
E. Soil, water, bacteria, salinity

Question 49:

• JAMB 1984

Which of the following lists of diseases, their causes and transmission is CORRECT?

A. Cholera, virus, severe diarrhoea, infected water
B. Malaria, protozoan, high fever, contact with infected person
C. Syphilis, virus, veneral disease, sexual intercourse
D. Small pox, virus, skin with blister, close contact with infected person
E. Sleeping sickness, bacteria, tiredness, headache and dozing, tsetsefly bite

Question 50:

• JAMB 1984

Erosion can be reduced along shape by

A. Ridging across slope
B. Ridging up slope
C. Ridging down slope
D. Crop rotation
E. Bush fallowing system