How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
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
Correct answer is A
No explanation has been provided for this answer.
The type of placentation illustrated in the diagram above is
marginal
perietal
axile
basal
Correct answer is D
No explanation has been provided for this answer.
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
Correct answer is A
No explanation has been provided for this answer.
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
Correct answer is A
No explanation has been provided for this answer.
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
Correct answer is C
No explanation has been provided for this answer.