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 functions of water in seed germination is to?
dilute the embryo
make the soil wet and soft
activate the enzymes
promote aerobic respiration
Correct answer is C
The water activates special proteins, called enzymes, that begin the process of seed growth.
The process by which the amount of water and solutes in the blood is controlled is known as
hemolysis
diffusion
turgidity
osmoregulation
Correct answer is D
No explanation has been provided for this answer.
Diagram J is a protease while diagrams K, L, M, and N are food substances. Study them and answer this question.
Protease J would react with the particular illustrated substance because enzymes?
K
L
M
N
Correct answer is B
No explanation has been provided for this answer.
The beak structure of the organism is best adapted for?
pecking grass
killing and picking fish
pecking wood
sucking nectar
Correct answer is D
The beaks of nectar sucking birds are long slender and pointed.
This helps in sucking nectar and also feeding insects and food to the young ones.
Birds like Hummingbirds have this kind of beaks.
An adaptive feature of camel to the desert is?
ability to increase sweat production
ability to pass high amount of urine
ability to tolerate low degree of dehydration
ability to tolerate high degree of dehydration
Correct answer is D
The hump present in the camel helps them travel long periods without water to survive in the desert's harsh conditions.
Thus the hump acts as a fat reserve or an energy reserve.
Felix Dujardin
Carolus Linneus
Theodore Schwann
Charles Darwin
Correct answer is B
Carolus Linnaeus is the father of taxonomy, which is the system of classifying and naming organisms.
One of his contributions was the development of a hierarchical system of classification of nature.
Today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.
petaloid sepals serve the function of?
carrying out photosynthesis
attracting pollinating agents to a flower
retaining pollen grains in the corolla tubes
protecting the inner floral parts of the flower
Correct answer is D
They typically function as protection for the flower in bud, and often as support for the petals when in bloom.
The under secretion of thyroxine in children results in?
goitre
gigantism
kwashiorkor
cretinism
Correct answer is D
Congenital hypothyroidism, previously known as cretinism, is a severe deficiency of thyroid hormone in newborns.
It causes impaired neurological function, stunted growth, and physical deformities
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