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.
ONE of the major causes of haemophilia is lack of
firbrinogen
amylase
white blood corpuscles
red blood corpuscles
plasma
Correct answer is A
No explanation has been provided for this answer.
In man, identical twins occur when
An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
an ovum fertilized by two sperms and then divides into two, each forming an embryo
two ova are fertilized at the same tine each forming an embryo
two ova are fertilized by a single sperm each forming an embryo after fertilization
one ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
Correct answer is A
No explanation has been provided for this answer.
A physiological adaptation of plants to the problem of excessive water loss is
reduction in the number of stomata
reversal of the normal stomatal rythm
possession of shallow roots
possession of waxy cuticle
Correct answer is B
No explanation has been provided for this answer.
The parts of the mammalian eye that strongly bend light rays are the
cornea and the lens
cornea and aqueous humour
cornea and vitreous humour
lens and aqueous humour
lens and vitreous humour
Correct answer is A
- The cornea acts as the eye's outermost lens. It functions like a window that controls and focuses the entry of light into the eye. The cornea contributes between 65- 75 percent of the eye's total focusing power. When light strikes the cornea, it bends--or refracts--the incoming light onto the lens.
Which of these statements is NOT true of insects?
They are anthropods
Their body is divide into three distinct regions of head, thorax and abdomen
Their thorax comprises three segments, only two of which bear a pair of appendages each
Respiration is by means of trachea
They undergo metamorphosis
Correct answer is C
No explanation has been provided for this answer.