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 cell types has the least number of mitochondria?
Cardiac cells of the heart
Cells of the cornified layer
Muscle cells of the bladder
Muscle cells of the diaphragm
Correct answer is B
No explanation has been provided for this answer.
The organelle that eliminates water from the body of a protozoan is the
plasma membrane
contractile vacuole
nucleus
cell wall
Correct answer is B
No explanation has been provided for this answer.
cell membrane
organelles
small size
cytoplasm
Correct answer is B
No explanation has been provided for this answer.
Which if the following organisms is not classified as an animal?
Amoeba
Paramecium
Euglena
Obelia
Correct answer is C
No explanation has been provided for this answer.
Evidence for evolution include the following except
fossil records
Comparative anatomy
gene mutations
geographical distribution of genes
Correct answer is C
A mutation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology.
So a change in an organism's DNA can cause changes in all aspects of its life.
Mutations are essential to evolution; they are the raw material for genetic variation.