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 following structures are adaptations for water conservation except
sunken stomata
scales in animals
lenticels in stems
spines in plants
thick leaves
Correct answer is C
No explanation has been provided for this answer.
The pair of genes expressed in a heterozygous individual is described as
allele
chromatid
dominant gene
centrosome
chromomere
Correct answer is C
No explanation has been provided for this answer.
Which of the following is not a reason why an offspring looks different from its parents?
Random reorganisation of chromosome during gamete formation
Existence of multiple alleles in organisms
Formation of chasmata in chromatids during meiosis
Mutation which gives rise to new combination of gene
Mitosis of the zygote produces new combination of chromosomes
Correct answer is D
No explanation has been provided for this answer.
Which of the following is a definition of heredity? It
involves closely related organisms not resembling
is the total absence of parental traits in offspring
involves an absence of variation in organisms
is the transfer of characteristics from parents to offspring
cause of infant mortality
Correct answer is D
No explanation has been provided for this answer.
The statement that the environment determines which organisms survive to reproduce
explains the theory of acquired characters
supports Jean Lamarck’s theory of use and disuse
supports the idea of survival of the fittest
is refuted by fossil records
implies that organisms modify their environment in order to survive
Correct answer is C
No explanation has been provided for this answer.