WAEC SSCE - Biology - 2016 (Objective)

Question 1 Report

Question 2 Report

Question 3 Report

Question 4 Report

Question 5 Report

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?

1 and 11 only

1 and 111 only

11 and 111 only

1, 11 and 111 only

Question 6 Report

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

low humidity and low temperature

high humidity and low temperature

low humidity and high temperature

high humidity and high temperature

Question 7 Report

Question 8 Report

Question 9 Report

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

The source of the nitrates in the diagram is termed

root nodules of legumes

cloud

fertilizers

organic matter

Question 10 Report

Question 11 Report

Question 12 Report

Question 13 Report

Question 14 Report

Question 15 Report

Question 16 Report

Question 17 Report

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

exhaust from cars

oil spillage

dumping of sewage

excess rainfall

Question 18 Report

Question 19 Report

Question 20 Report

Question 21 Report

Question 22 Report

Question 23 Report

Question 24 Report

Question 25 Report

Question 26 Report

Question 27 Report

Question 28 Report

Question 29 Report

Question 30 Report

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?

1:1

2:3

3:4

4:1

Question 31 Report

Study the diagram above and answer the question.

A decrease in the number of 11 will result in

an increase in urine production

an increase in energy production

a decreased population

decreased immunity

Question 32 Report

Question 33 Report

Question 34 Report

Question 35 Report

The type of placentation illustrated in the diagram above is

marginal

perietal

axile

basal

Question 36 Report

Question 37 Report

Question 38 Report

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

wilting

competition

transpiration

Osmosis

Question 39 Report

Question 40 Report

Question 41 Report

Question 42 Report

Question 43 Report

Question 44 Report

Question 45 Report

Question 46 Report

Question 47 Report

Question 48 Report

Question 49 Report

Question 50 Report