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 diagram below is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
Which of the labeled parts is the cortex?
I
II
III
IV
Correct answer is D
No explanation has been provided for this answer.
The blood vessel that carries blood from the alimentary canal to the liver is the
hepatic artery
hepatic vein
hepatic portal vein
mesenteric artery
Correct answer is C
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas, and spleen to the liver. This blood contains nutrients and toxins extracted from digested contents.
Radius and ulna are bones of the
pectoral girdle
upper arm
pelvic girdle
lower arm
Correct answer is D
Our forearm contains two long parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.
greater amount of DNA is involved in sexual reproduction
gametes of parents have different genetic composition
genetic materials come from parents of two different species
sexual reproduction is a lengthy process
Correct answer is B
No explanation has been provided for this answer.
A plant cell placed in a solution with a higher water potential will
expand and then shrink
enlarge and become turgid
expand and then burst
decrease in size and become flaccid
Correct answer is D
No explanation has been provided for this answer.