Biology past questions: JAMB UTME 2025

116 objective questions, with answers. Free to read and practise.

Sit this paper

116 questions, one at a time, marked as you go or at the end. No account needed.

1.
A complex feeding relationship between organisms in a habitat that involves transfer of energy in form of food is
1. A.food web
2. B.pyramid of numbers
3. C.pyramid of energy
4. D.food chain
Show answerHide answer
Answer: A food web
2.
A form of adaptive colouration that helps animals to remain unnoticed is
1. A.hibernation
2. B.aestivation
3. C.migration
4. D.countershading
Show answerHide answer
Answer: D countershading
3.
A medium of transportation of materials in plants is the
1. A.xylem
2. B.phloem
3. C.cell sap
4. D.cytoplasm
Show answerHide answer
Answer: C cell sap
4.
A repeating unit of a very large DNA molecule is made up of
1. A.phosphate
2. B.nitrogenous base
3. C.nucleotides
4. D.deoxyribose sugar
Show answerHide answer
Answer: D deoxyribose sugar
5.
A structure associated with an open circulatory system is
1. A.vein
2. B.artery
3. C.arteriole
4. D.haemocoel
Show answerHide answer
Answer: D haemocoel
6.
Absorption of nutrients in ferns is through
1. A.roots
2. B.hyphae
3. C.rhizoid
4. D.rhizome
Show answerHide answer
Answer: D rhizome
7.
Agglutination occurs in blood transfusion when the
1. A.antigen and antibody in the donor and the recipient are incompatible
2. B.donor and recepient belong to different races
3. C.same antibodies from donor and recipient fuse together
4. D.donor and the recipient belong to the same blood group
Show answerHide answer
Answer: A antigen and antibody in the donor and the recipient are incompatible
8.
Albinism is a disorder caused by
1. A.under production of sebum
2. B.over secretion of sebum
3. C.recessive genes
4. D.over production of melanin
Show answerHide answer
Answer: C recessive genes
9.
An example of a plant whose flower is dispersed by wind is
1. A.schizocarp
2. B.caryopsis
3. C.capsule
4. D.cypsela
Show answerHide answer
Answer: D cypsela
10.
An example of a reflex action is
1. A.writing
2. B.talking
3. C.coughing
4. D.walking
Show answerHide answer
Answer: C coughing
11.
An example of a saprophytic organism is
1. A.rhizopus
2. B.bladderwort
3. C.sundew
4. D.mistletoe
Show answerHide answer
Answer: A rhizopus
12.
An example of application of variation is
1. A.paternity determination
2. B.sex determination
3. C.population control
4. D.survival of the fittest
Show answerHide answer
Answer: A paternity determination
13.
An instrument used in measuring plants growth is
1. A.hygrometer
2. B.auxanometer
3. C.barometer
4. D.thermometer
Show answerHide answer
Answer: B auxanometer
14.
Appendix in humans and caecum in herbivores are evidences of evolution from
1. A.vestigial organ
2. B.fossil records
3. C.comparative anatomy
4. D.embryology
Show answerHide answer
Answer: A vestigial organ
15.
Chemical breakdown of large food molecules into smaller and soluble substances is the function of
1. A.large intestine
2. B.duodenum
3. C.rectum
4. D.ileum
Show answerHide answer
Answer: B duodenum
16.
Chlamydomonas belongs to the phylum
1. A.tracheophyta
2. B.protophyta
3. C.pteridophyta
4. D.bryophyta
Show answerHide answer
Answer: B protophyta
17.
Competition between cow and goat for scarce grasses during dry season can be described as
1. A.intraspecific
2. B.predation
3. C.interspecific
4. D.commensalism
Show answerHide answer
Answer: C interspecific
18.
Desert plants are usually called
1. A.mesophytes
2. B.hydrophytes
3. C.sporophytes
4. D.xerophytes
Show answerHide answer
Answer: D xerophytes
19.
Example of animal exhibiting mating colouration is
1. A.agama lizard
2. B.variegated grasshopper
3. C.chameleon
4. D.leopard
Show answerHide answer
Answer: A agama lizard
20.
Genetically Modified Organisms (GMO) food products are of benefit to farmers because they are
1. A.resistant crop varieties
2. B.susceptible to diseases
3. C.of low quality
4. D.low yielding varieties
Show answerHide answer
Answer: A resistant crop varieties
21.
Glucose → ethanol + CO \(_2\) The chemical reaction above represents the process of
1. A.oxidation
2. B.fermentation
3. C.glycolysis
4. D.photosynthesis
Show answerHide answer
Answer: B fermentation
22.
In a community with limited resources, the less vigorous species are eliminated due to
1. A.disease
2. B.drought
3. C.competition
4. D.natality
Show answerHide answer
Answer: C competition
23.
In a cross involving a heterozygous red flower plant (Rr) and a white flowered plant (rr), what is the probability that the offspring will be Rr?
1. A.\(\frac{1}{2}\)
2. B.1
3. C.\(\frac{1}{4}\)
4. D.2
Show answerHide answer
Answer: A \(\frac{1}{2}\)
24.
In ecological succession, the final stable community is called
1. A.climax
2. B.secondary
3. C.serial
4. D.pioneer
Show answerHide answer
Answer: A climax
25.
In most vertebrates, the common basic plan with a skull, vertebral column and a pair of girdle is an evidence of evolution from
1. A.molecular records
2. B.fossil records
3. C.comparative anatomy
4. D.embryology
Show answerHide answer
Answer: C comparative anatomy
26.
In Nigeria, the major climatic factor that determines the distribution of organisms is
1. A.temperature
2. B.humidity
3. C.light
4. D.rainfall
Show answerHide answer
Answer: D rainfall
27.
In which of the following organisms does niche differentiation serve as a means of reducing intraspecific competition?
1. A.Deer
2. B.Pigeon
3. C.Tilapia
4. D.Toad
Show answerHide answer
Answer: C Tilapia
28.
In which state of Nigeria is Obudu game reserve located?
1. A.Cross Rivers
2. B.Anambra
3. C.Akwa Ibom
4. D.Rivers
Show answerHide answer
Answer: A Cross Rivers
29.
Long beak with saw-like edges is an adaptation in
1. A.wood pecker
2. B.kingfisher
3. C.pelican
4. D.duck
Show answerHide answer
Answer: D duck
30.
Macronutrients required by plants include
1. A.Boron
2. B.Iron
3. C.Zinc
4. D.Calcium
Show answerHide answer
Answer: C Zinc
31.
One characteristic which differentiates bats from birds is that bats
1. A.possess four chambered heart
2. B.are active at night
3. C.are warm blooded
4. D.possess mammary glands
Show answerHide answer
Answer: D possess mammary glands
32.
One of the characteristics of insect pollinated flowers is
1. A.large anthers
2. B.absence of nectar
3. C.scented flowers
4. D.scentless flowers
Show answerHide answer
Answer: C scented flowers
33.
One of the components of peripheral nervous system is
1. A.cerebellum
2. B.brain
3. C.spinal cord
4. D.sensory neurones
Show answerHide answer
Answer: D sensory neurones
34.
One of the following adapts baobab tree to savanna habitat.
1. A.Presence of deciduous stem
2. B.Presence of tap roots
3. C.Presence of broadleaves
4. D.Presence of thick bark
Show answerHide answer
Answer: D Presence of thick bark
35.
One of the following is a reflex action
1. A.sneezing
2. B.walking
3. C.dancing
4. D.crying
Show answerHide answer
Answer: A sneezing
36.
One of the following is an epidemic diseases in Nigeria
1. A.malaria
2. B.schisotomiasis
3. C.polio myelitis
4. D.cholera
Show answerHide answer
Answer: D cholera
37.
Part of the littoral zone of the marine habitat above the high tide mark, wetted by spray of water from breaking of waves is referred to as the
1. A.splash zone
2. B.benthic zone
3. C.subtidal zone
4. D.intertidal zone
Show answerHide answer
Answer: A splash zone
38.
Population replacement among species of organisms in a given habitat under competition is due to
1. A.survival of the fittest
2. B.climax community
3. C.natural selection
4. D.dominant population
Show answerHide answer
Answer: A survival of the fittest
39.
Proteins are macromolecules made of smaller units called
1. A.glycerol
2. B.carboxylic acid
3. C.fatty acid
4. D.amino acids
Show answerHide answer
Answer: D amino acids
40.
Renal artery branches and divides into a mass of blood capillaries in the Bowman's capsule called
1. A.tubule
2. B.pelvis
3. C.glomerulus
4. D.nephrone
Show answerHide answer
Answer: A tubule
41.
Seaweeds and Barnacles are common flora and fauna found in which of these habitats?
1. A.Terrestrial
2. B.Estuarine
3. C.Fresh water
4. D.Marine
Show answerHide answer
Answer: B Estuarine
42.
The ability of chameleon to change its colour to that of the environment is for
1. A.invitation
2. B.attraction
3. C.defence
4. D.attack
Show answerHide answer
Answer: C defence
43.
The artery that carries blood to the heart is
1. A.coronary
2. B.pulmonary
3. C.renal
4. D.aorta
Show answerHide answer
Answer: D aorta
44.
The biological association between bacteria and protozoa in the rumen of cattle is an example of
1. A.symbiosis
2. B.commensalism
3. C.parasitism
4. D.predation
Show answerHide answer
Answer: C parasitism
45.
The bright colouration of the flower of a flowering plant is an adaptation for
1. A.reproduction
2. B.growth
3. C.excretion
4. D.respiration
Show answerHide answer
Answer: A reproduction
46.
The canine teeth are prominent in which group of animals?
1. A.Carnivores
2. B.Parasites
3. C.Herbivores
4. D.Omnivores
Show answerHide answer
Answer: A Carnivores
47.
The cell component that stores waste products is the
1. A.Golgi apparatus
2. B.cell wall
3. C.vacuoles
4. D.lysosome
Show answerHide answer
Answer: C vacuoles
48.
The constantly dividing cells found at the apex of roots and stem during growth is
1. A.intercalary
2. B.apical
3. C.meristematic
4. D.lateral
Show answerHide answer
Answer: B apical
49.
The correct base pair in DNA molecule is
1. A.cytosine - adenine
2. B.cytosine - thymine
3. C.guanine - adenine
4. D.adenine - thymine
Show answerHide answer
Answer: D adenine - thymine
50.
The cortex of a herbaceous stem is made up of
1. A.sclerenchyma and collenchyma
2. B.collenchyma and xylem
3. C.Sclerenchyma and parenchyma
4. D.parenchyma and collenchyma
Show answerHide answer
Answer: D parenchyma and collenchyma
51.
The date palm is commonly planted in Sahel zone of
1. A.Kastina
2. B.Borno
3. C.Plateau
4. D.Taraba
Show answerHide answer
Answer: B Borno
52.
The digestive enzyme pepsin is active in
1. A.alkaline medium
2. B.alkaline and acidic medium
3. C.acidic medium
4. D.neutral medium
Show answerHide answer
Answer: C acidic medium
53.
The following are factors that affect the population growth of an organism except
1. A.predator
2. B.food shortage
3. C.natality
4. D.disease
Show answerHide answer
Answer: C natality
54.
The function of the organelle labelled II is to
1. A.produce energy for the cell
2. B.transport materials outside the cells
3. C.transport materials within the cell
4. D.coordinate the activities of the cell
Show answerHide answer
Answer: D coordinate the activities of the cell
55.
The genetic make up of an organism is referred to as the
1. A.nucleotide
2. B.karyotype
3. C.phenotype
4. D.genotype
Show answerHide answer
Answer: D genotype
56.
The green-brown colour of grasshopper's body in dry grass field is an adaptation for
1. A.camouflage
2. B.predation
3. C.mating
4. D.mimicry
Show answerHide answer
Answer: A camouflage
57.
The heritable disease caused by distorted shape of the red blood cell, hindering free flow of blood in the vessel is
1. A.haemophilia
2. B.albinism
3. C.colour blindness
4. D.sickle cell anaemia
Show answerHide answer
Answer: D sickle cell anaemia
58.
The innermost layer of mammalian epidermis is
1. A.capillaries layer
2. B.cornified layer
3. C.granular layer
4. D.malphigian layer
Show answerHide answer
Answer: D malphigian layer
59.
The level of organization in onion bulb is
1. A.system
2. B.tissue
3. C.cell
4. D.organ
Show answerHide answer
Answer: D organ
60.
The longest single bone in human is the
1. A.humerus
2. B.scapula
3. C.femur
4. D.sternum
Show answerHide answer
Answer: C femur
61.
The maximum number of organisms that the resources in the habitat can support is referred to as
1. A.maximum population
2. B.working potential
3. C.carrying capacity
4. D.operating capacity
Show answerHide answer
Answer: A maximum population
62.
The most advanced organism in an evolutionary trend among the following is
1. A.planaria
2. B.paramecium
3. C.earthworm
4. D.hydra
Show answerHide answer
Answer: C earthworm
63.
The most advanced spermatophyte that forms the largest group of plant kingdom is the
1. A.fern
2. B.angiosperm
3. C.cones
4. D.gymnosperm
Show answerHide answer
Answer: B angiosperm
64.
The most suitable soil for crops cultivation in Nigeria is
1. A.laterite
2. B.loamy
3. C.sandy
4. D.clayey
Show answerHide answer
Answer: B loamy
65.
The mouth parts of a grasshopper are adapted for
1. A.piercing and sucking
2. B.sucking and chewing
3. C.biting and chewing
4. D.biting and sucking
Show answerHide answer
Answer: C biting and chewing
66.
The organization that provides emergency needs of children globally is
1. A.UNICEF
2. B.NMA
3. C.WHO
4. D.UNIDO
Show answerHide answer
Answer: A UNICEF
67.
The oxygen transported to all parts of the body during blood circulation is used for the
1. A.removal of waste products
2. B.growth and development of cells
3. C.formation of carboxyl haemoglobin
4. D.release of energy from food
Show answerHide answer
Answer: D release of energy from food
68.
The part labelled I is the
1. A.mitochondrion
2. B.cytoplasm
3. C.vacuole
4. D.nucleus
Show answerHide answer
Answer: D nucleus
69.
The part labelled II is the
1. A.cervix
2. B.vagina
3. C.uterus
4. D.ovary
Show answerHide answer
Answer: C uterus
70.
The part of the flower that is brightly coloured and attract pollinating agents such as insects is labelled
1. A.III
2. B.I
3. C.IV
4. D.II
Show answerHide answer
Answer: A III
71.
The presence of tiny, non-functional hind leg bones inside a whale's body suggests that whales
1. A.are not related to land animals
2. B.evolved from ancestors that had legs
3. C.have never had legs in their evolutionary history
4. D.bones serve a major function in swimming
Show answerHide answer
Answer: B evolved from ancestors that had legs
72.
The prevalence of pests and diseases which affect plants and animals in a terrestrial habitat is
1. A.abiotic factor
2. B.edaphic factor
3. C.biotic factor
4. D.climatic factor
Show answerHide answer
Answer: C biotic factor
73.
The process by which plants absorb water from the soil through their roots is
1. A.diffusion
2. B.photosynthesis
3. C.osmosis
4. D.transpiration
Show answerHide answer
Answer: C osmosis
74.
The process that brings about the cooling effect on the body of mammals is
1. A.sweat excretion
2. B.digestion
3. C.urine formation
4. D.respiration
Show answerHide answer
Answer: A sweat excretion
75.
The region of a flower stalk attached to flower parts is
1. A.corolla
2. B.pedicel
3. C.calyx
4. D.receptacle
Show answerHide answer
Answer: D receptacle
76.
The relationship between fungus and alga in lichen is an example of
1. A.parasitism
2. B.mutualism
3. C.commensalism
4. D.predation
Show answerHide answer
Answer: B mutualism
77.
The segregation of genes occurs during
1. A.gamete formation
2. B.mitosis
3. C.fertilization
4. D.transmission of characters
Show answerHide answer
Answer: A gamete formation
78.
The slender and stick-like shapes of the stick insect is a structural adaptation for
1. A.water conservation
2. B.securing mate
3. C.protection and defense
4. D.escaping adaptation
Show answerHide answer
Answer: C protection and defense
79.
The stamen of a flower consists of
1. A.filament and anther
2. B.ovary and stigma
3. C.filament and ovary
4. D.sepals and petals
Show answerHide answer
Answer: A filament and anther
80.
The structure that helps in the formation of cilia and flagella is
1. A.plastid
2. B.centriole
3. C.golgi bodies
4. D.lysosome
Show answerHide answer
Answer: B centriole
81.
The two - hoofed toes of camels allow easy walking on desert because of
1. A.narrow foot surface
2. B.enlarged foot surface
3. C.elongated foot surface
4. D.long foot surface
Show answerHide answer
Answer: B enlarged foot surface
82.
The type of germination in which the cotyledons remain below the soil surface is
1. A.plumule
2. B.micropyle
3. C.hypogeal
4. D.epigeal
Show answerHide answer
Answer: C hypogeal
83.
The type of holozoic nutrition where organisms feed on both plant and animal substances is
1. A.saprophytic
2. B.herbivorous
3. C.omnivorous
4. D.carnivorous
Show answerHide answer
Answer: C omnivorous
84.
The type of teeth used for tearing in man is labelled
1. A.IV
2. B.III
3. C.I
4. D.II
Show answerHide answer
Answer: D II
85.
The variation that can be applied in crime detection is
1. A.tongue rolling
2. B.height
3. C.colour
4. D.fingerprints
Show answerHide answer
Answer: A tongue rolling
86.
The vertebrate bone responsible for the attachment of the abdominal muscles is
1. A.sacral
2. B.thoracic
3. C.lumber
4. D.cervical
Show answerHide answer
Answer: C lumber
87.
The zone in an ecosystem that provides habitat for living organism is referred to as
1. A.atmosphere
2. B.lithosphere
3. C.biosphere
4. D.environment
Show answerHide answer
Answer: C biosphere
88.
Translocation of manufactured food in plants is through the
1. A.pericycle
2. B.phloem cells
3. C.endodermis
4. D.xylem vessels
Show answerHide answer
Answer: B phloem cells
89.
Transparency of water is measured using a
1. A.hygrometer
2. B.barometer
3. C.secchi disc
4. D.anemometer
Show answerHide answer
Answer: C secchi disc
90.
Use the diagram above to answer the question that follows. The structure labelled I is adapted for
1. A.tearing
2. B.sieving
3. C.boring
4. D.sucking
Show answerHide answer
Answer: D sucking
91.
Use the diagram above to answer the questions that follow The endocrine gland that is located in the part labelled I is
1. A.parathyroid
2. B.thyroid
3. C.pituitary
4. D.adrenal
Show answerHide answer
Answer: C pituitary
92.
Use the diagram above to answer the questions that follow The part labelled II is the
1. A.Liver
2. B.Pancreas
3. C.Lung
4. D.Stomach
Show answerHide answer
Answer: A Liver
93.
Use the illustration above to answer the question that follows What is the genotypic ratio of the F \(_2\) generation?
1. A.2 :1 :1
2. B.3 : 1
3. C.1 : 1
4. D.1 : 2: 1
Show answerHide answer
Answer: D 1 : 2: 1
94.
What is the phenotype of the offspring produced in F \(_1\) ?
1. A.Homozygous tall
2. B.Homozygous short
3. C.Heterozygous short
4. D.Heterozygous tall
Show answerHide answer
Answer: D Heterozygous tall
95.
When calyx of a flower is joined together, it is called
1. A.gamosepalous
2. B.polypetalous
3. C.gamopetalous
4. D.polysepalous
Show answerHide answer
Answer: A gamosepalous
96.
When the cotyledons appear above the soil during germination is called
1. A.epicotyl
2. B.epigeal
3. C.hypocotyl
4. D.hypogeal
Show answerHide answer
Answer: B epigeal
97.
Which of the following blood groups will clump when mixed with anti-a antibody serum?
1. A.A and AB
2. B.B only
3. C.B and O
4. D.A only
Show answerHide answer
Answer: A A and AB
98.
Which of the following controls protein and enzyme syntheses in the cytoplasm of the cell?
1. A.DNA
2. B.Nucleus
3. C.Chromosome
4. D.Mitochondria
Show answerHide answer
Answer: B Nucleus
99.
Which of the following differentiates photosynthesis from respiration?
1. A.Food is usually broken down
2. B.Oxygen is usually liberated
3. C.It occurs both during the day and night
4. D.It occurs in both plants and animals
Show answerHide answer
Answer: B Oxygen is usually liberated
100.
Which of the following exists at the organ level of organization?
1. A.Euglena
2. B.Hydra
3. C.Onion bulb
4. D.Paramecium
Show answerHide answer
Answer: C Onion bulb
101.
Which of the following is a behavioural adaptation of animals for avoiding adverse weather conditions?
1. A.Hiding
2. B.Remain motionless
3. C.Hibernation
4. D.swelling up
Show answerHide answer
Answer: C Hibernation
102.
Which of the following is a medium of transportation in animal cells?
1. A.Latex
2. B.Cytoplasm
3. C.Cell sap
4. D.Blood
Show answerHide answer
Answer: D Blood
103.
Which of the following is an advantage of cross fertilization?
1. A.Individuals produced are less adapted to local environment
2. B.It leads to the production of healthier offspring
3. C.It leads to inbreeding depression
4. D.It leads to the production of weak offsprings
Show answerHide answer
Answer: B It leads to the production of healthier offspring
104.
Which of the following is an effect of carbon monoxide on humans?
1. A.Major cause of respiratory tract infections
2. B.Reducing oxygen carrying capacity of blood
3. C.Preventing clotting of blood
4. D.Causing gene mutation
Show answerHide answer
Answer: B Reducing oxygen carrying capacity of blood
105.
Which of the following is an example of vestigial structure?
1. A.Elephant trunk
2. B.Human appendix
3. C.Bird wings
4. D.Fish gills
Show answerHide answer
Answer: B Human appendix
106.
Which of the following is the excretory organ in birds?
1. A.Nephridia
2. B.kidneys
3. C.Malpighians tubules
4. D.Green glands
Show answerHide answer
Answer: B kidneys
107.
Which of the following processes takes place in the carbon cycle?
1. A.Combustion
2. B.Nitrification
3. C.Evaporation
4. D.Transpiration
Show answerHide answer
Answer: A Combustion
108.
Which of the following statements about poliomyelitis is correct?
1. A.It affects both young and old.
2. B.It is a bacterial disease.
3. C.There is no vaccination against the disease.
4. D.It is capable for paralysing the limbs.
Show answerHide answer
Answer: D It is capable for paralysing the limbs.
109.
Which of the following statements is correct about sedimentation of a given soil?
1. A.Decaying organic matter remains afloat.
2. B.Largest and medium size particles settle at the bottom.
3. C.Remains of decaying organic matter settles at the bottom.
4. D.Largest soil particles remain suspended in water.
Show answerHide answer
Answer: C Remains of decaying organic matter settles at the bottom.
110.
Which of these animals create their natural habitats in burrows?
1. A.Bush rat
2. B.Dove
3. C.Chameleon
4. D.Snails
Show answerHide answer
Answer: A Bush rat
111.
Which of these animals uses buccal respiration?
1. A.Toad
2. B.Tilapia
3. C.Birds
4. D.Grasshopper
Show answerHide answer
Answer: A Toad
112.
Which of these insects has a piercing and sucking mouthpart?
1. A.mosquito
2. B.Cockroach
3. C.butterfly
4. D.moth
Show answerHide answer
Answer: A mosquito
113.
Which of these is an estuarine habitat?
1. A.Lagoon
2. B.River
3. C.Lakes
4. D.Ocean
Show answerHide answer
Answer: A Lagoon
114.
Which of these is the correct arrangement of tissues in herbaceous roots from the circumference to the center?
1. A.piliferous layer, cortex, pericycle, vascular tissue and pith
2. B.piliferous layer, cortex ,vascular tissues, pericycle and pith
3. C.piliferous layer, pericycle ,vascular tissues, cortex and pith
4. D.piliferous layer, cortex , vascular tissues, pith and pericycle
Show answerHide answer
Answer: A piliferous layer, cortex, pericycle, vascular tissue and pith
115.
Which of these plants is considered to be common in an estuarine habitat?
1. A.plantain
2. B.Gmelina
3. C.Iroko
4. D.Mangrove
Show answerHide answer
Answer: D Mangrove
116.
Whose theory of evolution supports that characters acquired through use or disuse are transmitted to offspring?
1. A.Darwin
2. B.Mendel
3. C.Morgan
4. D.Larmark
Show answerHide answer
Answer: D Larmark

Printing is turned off here to protect the question bank. Get the SmarTest app to study offline.

More free Biology papers

JAMB Biology 1978–2020 is in the app

The latest five years of each paper are free here. The SmarTest app has every year we hold, a worked explanation for each answer, and timed mock exams. It works offline.

Get the app

Android, Windows, Mac and Linux