Waec Biology Past Questions and Answers

Question 106:

• WAEC 1990

What is the difference between viviparous and oviparous animals?

A. Possession of yolked eggs
B. Laying of unfertilized eggs
C. Possession of yolkless eggs
D. Protection of eggs from predator
E. Laying and brooding of eggs

Question 107:

• WAEC 1990

The structure of the embryo which develops and makes contact with the uterine
wall is known as the

A. Umbilical cord
B. Placenta
C. Allantois
D. Amnion
E. Chorion

Question 108:

• WAEC 1990

The organ located in the mammalian abdominal cavity just below the diaphragm
and lying on top of the stomach is the

A. Bladder
B. Intestine
C. Liver
D. Pancreas
E. Chorion

Question 109:

• WAEC 1990

Which of the following is the effect of using artificial pollination in plant breeding?

A. Production of healthy crops
B. Improvement of the variety of crops
C. Making crops susceptible to diseases
D. Lengthening the maturity time of crops
E. Encouraging competition amongst crops

Question 110:

• WAEC 1990

A dry indehiscent fruit containing one seed and possessing a hairy pappus is described as

A. A nut
B. A drupe
C. A cypsela
D. A follicle
E. An achene