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.
Pentadactyl plan of the fore limbs of frog, bird, horse, whale and man is a proof of?
spontaneous generation
evolution
locomotion
creation
Correct answer is B
The limbs of crocodiles, birds, whales, horses, bats and humans all look very different they share the same five fingered bone structure.
This provides evidence for the theory of evolution .
The sum total of all observable features of an organism is?
phenotype
heterozygous
genotype
homozygous
Correct answer is A
Phenotype refers to an individual's observable traits, such as height, eye color and blood type.
A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.
The end product of the digestion of carbohydrate is?
amino acid
glycerol
glucose
sucrose
Correct answer is C
The final product of carbohydrate digestion is primarily glucose along with some fructose, glucose, and galactose, while amino acids are the end products of protein digestion.
The display of male agama lizard is to?
scare predators
regulate body temperature
attract female for mate
give invite to intruders
Correct answer is C
Tail wagging, bright colors, mouth gaping/display, inflation, body posture, head bobs, and 'push-ups' (some animals are capable of changing color to attract mates) are some displays that allow lizards to send signals to translate to a potential mate
Conversion of atmosphere carbon into chemical bond energy occurs during the process of?
transpiration
photosynthesis
digestion
respiration
Correct answer is B
As photosynthetic organisms, plants take up atmospheric CO2, chemically reducing the carbon.
This represents not only an acquisition of stored chemical energy for the plant, but also provides the carbon skeletons for the organic molecules that make up a plants' structure.