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.
The practice of warming soup regularly as a means to preserve food is essentially to
retain the taste
help break down cellulose
remove excess water
kill the bacteria in it
raise the temperature
Correct answer is D
No explanation has been provided for this answer.
Which of the following results is to be expected if the set up is left for several hours?
decrease in the size of the yam
movement of the salt solution into the water
decrease in the volume of water inside the yam
movement of water from the salt solution into the yam
Correct answer is C
No explanation has been provided for this answer.
I and II only
II and V only
III and IV only
II and IV only
III and V only
Correct answer is D
No explanation has been provided for this answer.
Yam is used in this set-up because it
is a permeable to the salt solution
is a plant material
acts as a storage organ
acts as a semi-permeable membrane
Correct answer is D
No explanation has been provided for this answer.
Predators are beneficial in pest control because they
are natural enemies of small mammals
devour farm animals
feed on crop pests
prey on game animals
compete for food with the pests
Correct answer is C
No explanation has been provided for this answer.