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.
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
The phenomenon in the diagram is termed
denitrification
conservation
eutrophication
global warming
Correct answer is C
Eutrophication is the process by which a body of water becomes enriched in dissolved nutrients (such as nitrates in this case) that stimulate the growth of aquatic plant life usually resulting in the depletion of dissolved oxygen.
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
The source of the nitrates in the diagram is termed
root nodules of legumes
cloud
fertilizers
organic matter
Correct answer is C
No explanation has been provided for this answer.
The inability of an organism to adapt to its habitat can lead to
dormancy
adaptation
extinction
survival
Correct answer is C
No explanation has been provided for this answer.
In which of the following insects is group instinct not displayed?
Solder ants
Cockroaches
Honey bees
Termites
Correct answer is B
No explanation has been provided for this answer.
Which of the following terms is associated with natural selections?
adaptive radiation
Differential reproduction
Population variability
Survival of the fitest
Correct answer is D
No explanation has been provided for this answer.