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.
If a child can receive blood from all donors, he belongs to the blood group?
O
AB
A
B
Correct answer is B
Individuals with blood type AB positive are usually called universal recipients while individuals with blood type O are usually called universal donors.
According to Darwin, the driving force behind evolutionary change is
natural selection
genetic drift
mutation
gene flow
Correct answer is A
No explanation has been provided for this answer.
hibernation
aestivation
dormancy
senescense
Correct answer is B
Aestivation is characterized by inactivity and a lowered metabolic rate, and is induced by high temperatures and arid conditions. It takes place during times of heat and dryness (the hot dry season) which are often the summer months.
xanthophyll
chromatophores
chlorophyll
melanin
Correct answer is B
Chromatophores are cells that produce color. Many types are pigment-containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans, and cephalopods.
Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.
Which of the following animals is most adapted for water conservation?
earthworms
mammals
flatworms
insects
Correct answer is D
Insects are widespread and adapted to all types of environment, even the driest and hottest places on earth.