Waec Biology Past Questions and Answers

Question 856:

• WAEC 2003

Forest conservation includes the following except

A. Prevention of bush-fires
B. Extensive felling of forest trees
C. Replacing of harvested trees by planting seedlings
D. Selective exploitation of forest trees

Question 857:

• WAEC 2003

Legumes incorporate nitrogen gas into their proteins because

A. Of the presence of Azotobacter in their roots
B. They possess root nodules containing Rhizobium
C. They have a well developed root system
D. They are autotrophic

Question 858:

• WAEC 2003

Which of the following is an example of discontinuous variation?

A. The range in height of a pea plant from 30cm to 50cm
B. Offspring, including the two male cats and three female cats
C. The colour of pear plants grown in the dark
D. The adult body weight ranging from 50 kg t0 95 kg

Question 859:

• WAEC 2003

Which of following pairs of scientists discovered the Rhesus factor in human blood?

A. Hooke and Lavine
B. Darwin and Landsteiner
C. Landsteiner and Lavine
D. Hooke and Darwin

Question 860:

• WAEC 2003

The organic molecule (s) present in the nucleus is/are

A. DNA
B. Protein, RNA andDNA
C. RNA and ATP
D. RNA