2016 - WAEC Biology Past Questions and Answers - page 5

Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.

Another cause that could lead to the phenomenon in the diagram is

The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.

What is the genotype ratio of carrier females to normal males in the cross?

The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.

Which of the genotypes are carriers of colour blindness?

The type of placentation illustrated in the diagram above is

Plant A was seen to appear as Plant B after seven hours
Study the above diagrams carefully and answer the questions.

The term that can be used to describe what happened to Plant A after seven hours is

Plant A was seen to appear as Plant B after seven hours
Study the above diagrams carefully and answer the questions.

The environmental factors responsible for the condition in plant B are

Study the diagram above and answer the question.

A decrease in the number of 11 will result in

The major problem experience by organisms living in small water bodies is

The capillarity of a soil refers to

An organism at the start of a food chain which provides the total input energy into an ecosystem is the