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 main distinguishing features between the soldier termite and other members of the caste are the
presence of wings, possession of a small head and large thorax
presence of wings, possession of a large thorax and a small head
absence of wings, possession of strong mandibles and a large head
absence of wings,possession of big head and the absence of mandibles
Correct answer is C
Soldier termites have distinctively shaped heads and are typically bigger than workers. Their protruding mandibles help them protect their colonies. Soldiers have elongated bodies and are pale red, light brown, or white.
At what stage in the life history of a mammal is the sex of an individual set?
at adolescence
at puberty
at birth
at conception
Correct answer is D
The sex of a baby is determined by its chromosome make-up at conception.
2n → 2n
n → n
n → 2n
2n → n
Correct answer is D
What are the major similarities and differences between mitosis and meiosis?
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells
A pair of genes that control a trait is referred to as
an allele
recessive
dominant
a hybrid
Correct answer is A
No explanation has been provided for this answer.
Thyroxine and adrenalin are examples of hormones that control?
blood grouping
tongue rolling
behavioural patterns
colour variation
Correct answer is C
No explanation has been provided for this answer.