Waec Biology Past Questions and Answers

Question 1371:

• WAEC 2011

Which of the following structures produces the greatest variety of digestive enzymes?

A. Salivary glands
B. Pancreas
C. Stomach
D. Colon

Question 1372:

• WAEC 2011

The following are abiotic components of an ecosystem except

A. Temperature
B. Oxygen
C. Bacteria
D. Soil

Question 1373:

• WAEC 2011

Use the information on capture-recapture method to calculate the total number of organisms in a habitat.
First capture = 200
Second capture = 120
Number of organisms with mark in second capture = 40
The total number of organisms therefore is

A. 200
B. 360
C. 600
D. 800

Question 1374:

• WAEC 2011

Ecological investigation in a habitat includes the following procedures except

A. Choosing a habitat
B. Identification of specimens
C. Determining the genetic makeup of specimens
D. Measuring abiotic and biotic factors

Question 1375:

• WAEC 2011

Which of the following substances when lost from the body of a mammal will not be returned to the ecosystem?

A. Sweat
B. Urea
C. Heat energy
D. Carbon dioxide