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.
Which of the following organs can be considered vestigial in humans but functional in other mammals
The liver
Appendix
Rectum
Stomach
Correct answer is B
Vestigial organs are remaining parts of one's functioning organ e.g the appendix in humans which functions as a caecum in herbivores. They are minute and incomplete organs with no special function.
The basis of growth involves the following processes except
Cell reduction
Cell division
Cell enlargement
Cell differentiation
Correct answer is A
During the growth process, the cell does not reduce, it divides, enlarges, and differentiates.
There is natural selection of offspring
There are great changes in the environment
Organisms develop specialized characters
The characters are inheritable
Correct answer is A
Jean Lamarck did not propose any theory regarding natural selection.
In an ecosystem, the organism that changes light energy into stored chemical energy is the
Consumer
Producer
Decomposer
Carnivore
Correct answer is B
The producer often transforms light energy into stored chemical energy; a procedure known as photosynthesis.
The pathogen that cause smallpox is
picornavirus
peramyxovirus
herpesvirus
poxvirus
Correct answer is D
No explanation has been provided for this answer.