Waec Biology 1997 Past Questions and Answers

Question 51:

• WAEC 1997

Which of the following farm practices can cause loss of soil fertility?

A. Mulching
B. Compost application
C. Use of fertilizers
D. Terracing
E. Intensive cropping

Question 52:

• WAEC 1997

One of the use of variation is in

A. Determining the size and weight of an individual
B. Determining paternity
C. Conservation of wildlife
D. Controlling of disease vector
E. Sex determination

Question 53:

• WAEC 1997

In which of the underlisted blood groupings is agglutination likely to occur during transfusion?

A. I
B. II
C. III
D. IV
E. V

Question 54:

• WAEC 1997

Which of the following is not a morphological variation

A. Shape of nose
B. Colour of skin
C. Colour of eyes
D. Ear lobe
E. Tongue rolling

Question 55:

• WAEC 1997

In man haemophilia is recessive and sex linked, The
probability of carrier mother and a normal father having a haemophilic male is

A. 1/4
B. 1/8
C. 2/3
D. 1/2
E. 1