JAMB Biology 2022

Sources of air pollutants are?

A. Industrial chimneys, burning fossil oils and river dams B. Sulphur dioxide, acid rain and pesticides C. Sulphur dioxide, vehicle exhausts, and aerosols D. Sewage, smoke and old vehicles

Correct Answer: C. Sulphur dioxide, vehicle exhausts, and aerosols

The body of a snail is divided into head?

A. Thorax and abdomen B. Visceral mass and abdomen C. Thorax and foot D. Visceral mass and foot

Correct Answer: D. Visceral mass and foot

An adaptation for defense in animals is?

A. Croaking of a male toad B. Basking in lizard C. Spines in porcupine fish D. Huddling together of penguins

Correct Answer: C. Spines in porcupine fish

The movement of Euglena towards the source of light is a?

A. Tropic movement B. Tactic movement C. Nastic movement D. Kinetic movement

Correct Answer: B. Tactic movement

During mitosis, the stage at which chromosomes lines up around the equator is?

A. Telophase B. Metaphase C. Anaphase D. Prophase

Correct Answer: B. Metaphase

The waste product of insects is?

A. Uric acid B. Urine C. Mucilage D. Sweat

Correct Answer: A. Uric acid

Succession that occurs on an abandoned farm land is?

A. Tertiary B. Secondary C. Primary D. Climax

Correct Answer: C. Primary

In Nigeria, Southern Guinea Savanna is found in?

A. Borno and Sokoto B. Kogi and Kwara C. Kaduna and Cross River D. Kano and Niger

Correct Answer: B. Kogi and Kwara

Which of the following is associated with the dark stage of photosynthesis?

A. Assimilation of Carbon(IV)oxide B. Photophosphorylation C. Photolysis D. Excitation of chlorophyll

Correct Answer: A. Assimilation of Carbon(IV)oxide

The part of mammalian skin that excretes metabolic wastes is?

A. Sweat gland B. Horny layer C. Malpighian layer D. Sebaceous gland

Correct Answer: A. Sweat gland

The feeding relationship that exists between a tick and a cow is?

A. Parasitism B. Mechanism C. Saprophytism D. Commensalism

Correct Answer: A. Parasitism

The type of fruit that is formed from a single flower having several free carpels is?

A. Indehiscent fruit B. Aggregate fruit C. Simple fruit D. Fleshy fruit

Correct Answer: B. Aggregate fruit

The part that performs urinogenital function in the male reproductive system is the?

A. Seminal vesicle B. Epididymis C. Urethra D. Ureter

Correct Answer: C. Urethra

The components of blood in man are?

A. Red blood cells, white blood cells, plasma and water B. Red blood cells, white blood cells, and plasma C. Red blood cells, white blood cells, and platelets D. Red blood cells, white blood cells, plasma and platelets

Correct Answer: D. Red blood cells, white blood cells, plasma and platelets

The development of big muscles by a wrestler is an example of?

A. Acquired characteristics B. Inherited characteristics C. Mutation D. Atrophication

Correct Answer: A. Acquired characteristics

Lack of nucleus is a feature in?

A. Osteocyte B. Neurone C. Erythrocyte D. Leucocyte

Correct Answer: C. Erythrocyte

A universal recipient of blood belongs to blood group?

A. O B. AB C. B D. A

Correct Answer: B. AB

The internal structure of a leaf that has larger air space is?

A. Palisade mesophyll B. Epidermis C. Spongy mesophyll D. Vascular bundles

Correct Answer: C. Spongy mesophyll

An example of an arboreal animal is?

A. Squirrels B. Duck C. Pig D. Rat

Correct Answer: A. Squirrels

The movement of sugars from the leaf to other parts of the plant is?

A. Guttation B. Transpiration C. Transportation D. Translocation

Correct Answer: D. Translocation

Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?

A. The cells of their epidermis have no blood capillaries B. They have well developed respiratory structures C. Their cylindrical shape gives high surface area to volume ratio D. Their surface area to volume ratio is very low

Correct Answer: C. Their cylindrical shape gives high surface area to volume ratio

The structure that joins the two strands of a chromosome together is the?

A. Spindle B. Cellulose C. Centromere D. Chromatid

Correct Answer: C. Centromere

When a colour blind woman marries a normal man, what is the probability of their son being colour blind?

A. 25% B. 100% C. 50% D. 0%

Correct Answer: B. 100%

The correct pathway for blood flow from the heart to the tissues of mammals is?

A. Heart-arteriole-artery-tissues B. Heart-artery-arteriole-tissues C. Heart-vein-venule-tissues D. Heart-venule-vein-tissues

Correct Answer: B. Heart-artery-arteriole-tissues

Tall trees with buttress roots and evergreen leaves are characteristic features of?

A. Temperate grass land B. Southern Guinea Savanna C. Tropical rain forests D. Northern Guinea savanna

Correct Answer: C. Tropical rain forests

The genes crossing over occurs during?

A. Fertilization B. Mutation C. Mitosis D. Meiosis

Correct Answer: D. Meiosis

In genetic counselling, a man with haemoglobin formation HbA HbS is most preferred to marry a woman of?

A. HbA HbA B. HbC HbH C. HbM HbF D. HbS HbS

Correct Answer: A. HbA HbA

An ecological instrument used to measure wind direction is?

A. Secchi disc B. Wind vane C. Anemometer D. Slope gauge

Correct Answer: B. Wind vane

The growth of mucor on a piece of bread is?

A. Scavenging B. Commensalism C. Autotrophism D. Saprophytism

Correct Answer: D. Saprophytism

Conversion of atmosphere carbon into chemical bond energy occurs during the process of?

A. Transpiration B. Photosynthesis C. Digestion D. Respiration

Correct Answer: B. Photosynthesis

The display of male agama lizard is to?

A. Scare predators B. Regulate body temperature C. Attract female for mate D. Give invite to intruders

Correct Answer: C. Attract female for mate

The end product of the digestion of carbohydrate is?

A. Amino acid B. Glycerol C. Glucose D. Sucrose

Correct Answer: C. Glucose

The sum total of all observable features of an organism is?

A. Phenotype B. Heterozygous C. Genotype D. Homozygous

Correct Answer: A. Phenotype

Pentadactyl plan of the fore limbs of frog, bird, horse, whale and man is a proof of?

A. Spontaneous generation B. Evolution C. Locomotion D. Creation

Correct Answer: B. Evolution

The under secretion of thyroxine in children results in?

A. Goitre B. Gigantism C. Kwashiorkor D. Cretinism

Correct Answer: D. Cretinism

Petaloid sepals serve the function of?

A. Carrying out photosynthesis B. Attracting pollinating agents to a flower C. Retaining pollen grains in the corolla tubes D. Protecting the inner floral parts of the flower

Correct Answer: D. Protecting the inner floral parts of the flower

The system of classification in which there are seven hierarchies from kingdom to species was introduced by?

A. Felix Dujardin B. Carolus Linneus C. Theodore Schwann D. Charles Darwin

Correct Answer: B. Carolus Linneus

An adaptive feature of a camel to the desert is?

A. Ability to increase sweat production B. Ability to pass high amount of urine C. Ability to tolerate low degree of dehydration D. Ability to tolerate high degree of dehydration

Correct Answer: D. Ability to tolerate high degree of dehydration

The part labelled II is?

A. Pellicle B. Cytoplasmic connections C. Flagella D. Cells

Correct Answer: B. Cytoplasmic connections

One of the functions of water in seed germination is to?

A. Dilute the embryo B. Make the soil wet and soft C. Activate the enzymes D. Promote aerobic respiration

Correct Answer: C. Activate the enzymes