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 orders correctly represents the trend in eutrophication?
Lack of oxygen → Death of aquatic organisms → Massive algal growth
Excess nitrates and phosphates → Massive algal growth → Lack of oxygen → Death of aquatic organisms
Heavy mineralization → Lack of oxygen → Massive algal growth
Excess nitrates and phosphates → Lack of oxygen → Massive algal growth → Death of aquatic organisms
Correct answer is B
No explanation has been provided for this answer.
protection of wildlife
prevention of habitat destruction
biological control of pests
disposal of raw sewage into the sea
Correct answer is D
No explanation has been provided for this answer.
Air pollution can be reduced by the following methods except?
building tall factory chimneys
passing waste gases through filters and absorbers
using lead-free petrol in car
recycling tins, cans, and bottles
Correct answer is A
Chimneys of factories release toxic gases into the air
Which of these diseases cannot be spread by an insect?
Cholera
Malaria
Trypanosomiasis
Measles
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about feeding relationships is correct?
In a food web on land, grasshopper feeds on praying mantis and on predator bugs
In a food chain on land, green plant is the producer
In an aquatic food chain mollusc larvae are the producers
In an aquatic food web, various copepods feed on mollusk Larvae and on sand eel
Correct answer is B
No explanation has been provided for this answer.