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 substances will not be returned to the ecosystem when a mammal loses it?
Sweat
Urea
Heat energy
Carbon dioxide
Correct answer is C
No explanation has been provided for this answer.
Which of the following phenomena affects plants growth in an alkaline soil?
Excessive plasmolysis
Excessive transpiration
Excessive sunlight
Poor drainage
Correct answer is D
No explanation has been provided for this answer.
Ecological investigation in a habitat includes the following procedures except
choosing a habitat
identification of specimens
determining the genetic makeup of specimens
measuring abiotic and biotic factors
Correct answer is C
No explanation has been provided for this answer.
A major reason why the red blood cells can survive in the blood is that the
blood plasma and the red blood cells are isotonic
red blood cells are hypotonic to the plasma
the red blood cells are hypertonic to the blood plasma
the red blood cells receive digested nutrients
Correct answer is A
No explanation has been provided for this answer.
salt solution is more concentrated than the cell sap of the yam
cell sap of the yam is more concentrated than the salt - solution
salt solution has the same concentration as the cell sap of the yam
the yam lost some water molecules to the salt solution
Correct answer is B
No explanation has been provided for this answer.