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 statements is TRUE of inhalation of air by man?
The ribs are not raised
Diaphragm is raised
Intercostal muscles relax
Pressure of the thoracic cavity increase
Size of thoracic cavity increase
Correct answer is E
No explanation has been provided for this answer.
Viruses are considered to be living organisms because they
possess transmittable characters
move from one place to another
respond to stimulation
ingest food materials
Correct answer is A
No explanation has been provided for this answer.
Farmers practise crop rotation because it
helps to prevent soil erosion
allows two crops to be planted at the same time
helps to conserve soil fertility
is an alternate to shifting cultivation
Correct answer is C
Crop rotation is a practice used to maintain nutrients in an agricultural soil.
Most irrigated lands often become unproductive in later years because of
loss of fertility
increase in salinity
soil erosion
loss of water
Correct answer is C
Disadvantages of irrigation:
- Excess water in the soil leads to waterlogging
40.0g per 100 g dry soil
4.4g per 100g dry soil
4.0 g per 100g dry soil
0.4g per 100g dry soil
Correct answer is C
No explanation has been provided for this answer.