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.
In the diagram of the human sperm above, the function of the part labelled II is to
fuse the ovum during fertilization
generate the energy for the sperm to swim to the fallopian tube
help the sperm to swim forward
dissolve the membrane of the egg during fertilization
Correct answer is C
No explanation has been provided for this answer.
The diagram above is an illustration of the human sperm. The part labelled I is the
acrosome
nucleus
mitochondrion
tail
Correct answer is A
No explanation has been provided for this answer.
When viewing an object that is close to the human eye, the
eye lens becomes thin
ciliary muscles relax
suspensory lens become taut
eye lens becomes fat
Correct answer is D
No explanation has been provided for this answer.
Receptor→sensoryneuron→synapse→intermediateneuron→synapse→motorneuron→effector
Receptor→motorneuron→synapse→intermediateneuron→synapse→sensoryneuron→effector
Effector→intermediateneuron→synapse→motorneuron→synapse→sensoryneuron→receptor
Effector→motorneuron→synapse→sensoryneuron→synapse→intermediateneuron→receptor
Correct answer is A
No explanation has been provided for this answer.
Which of the following glands also serves as an exocrine gland?
Ovary
Pancreas
Adrenal
Thyroid
Correct answer is B
The liver and pancreas are both exocrine and endocrine glands; they are exocrine glands because they secrete products—bile and pancreatic juice—into the gastrointestinal tract through a series of ducts, and endocrine because they secrete other substances directly into the bloodstream.