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Showing 9551–9600 of 10710 questions
Instruction
JAMB Biology 2002
JAMB (UTME)
Biology
2002
Q9551.The structure labelled I represents the
Aphloem
Bxylem
Ccortex
Dpericycle
Correct Answer: B
The xylem is the water-conducting tissue in the vascular bundle.
JAMB (UTME)
Biology
2002
Q9552.The gland usually found in the position labelled is the
Aadrenal
Bthyroid
Cpancreatic
Dpituitary
Correct Answer: A
The adrenal glands are located on top of the kidneys (position III).
JAMB (UTME)
Biology
2002
Q9553.A hormone secreted at IV serves to
Afacilitate the development of facial hairs
Braise the level of calcium ions in the blood
Clower blood glucose level
Dmake the body react to emergencies
Correct Answer: A
The testes (IV) secrete testosterone, which promotes facial hair development.
JAMB (UTME)
Biology
2002
Q9554.The processes of water loss and intake indicated by the arrows labelled I and II are respectively
Aevaporation and osmosis
Bexhalation and osmosis
Cosmosis and diffusion
Durination and diffusion
Correct Answer: A
Water loss through the skin is evaporation, and water intake through the skin is osmosis.
JAMB (UTME)
Biology
2002
Q9555.To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to
Afeed the animals in the herd with more food
Bcross-breed his animals with a different herd
Cinbreed the animals in his herd
Dprevent diseases in his herd
Correct Answer: C
Inbreeding helps retain desirable traits within a herd.
JAMB (UTME)
Biology
2002
Q9556.In a population of living things, the parameters of size, height, weight and colour are examples of
Adiscontinuous variations
Bphysiological variations
Ccontinuous variations
Dnon-heritable variations
Correct Answer: C
Size, height, weight, and colour show continuous variation.
JAMB (UTME)
Biology
2002
Q9557.If X^N is the dominant allele for normal vision and X^n the recessive allele for colour-blindness, a boy with the genotype YX^n will
Ahave normal vision
Bbe colour-blind
Cbe totally blind
Dbe a carrier of colour-blindness
Correct Answer: B
A boy with X^n Y has no dominant allele, so he will be colour-blind.
JAMB (UTME)
Biology
2002
Q9558.The first four children of a couple were all girls. The probability that the fifth will also be a girl is
A1/5
B1/4
C1/3
D1/2
Correct Answer: D
The probability of having a girl is always 1/2, regardless of previous births.
JAMB (UTME)
Biology
2002
Q9559.Genetic counselling is important when a marriage is planned between a
ARh+ woman and Rh+ man
BRh- woman and Rh+ man
CRh+ woman and Rh- man
DRh- woman and Rh- man
Correct Answer: B
Rh incompatibility occurs when an Rh- woman marries an Rh+ man.
JAMB (UTME)
Biology
2002
Q9560.What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically?
A1/4
B1/2
C3/4
DAll
Correct Answer: A
A cross between two heterozygotes (Aa × Aa) gives 1/4 recessive phenotype.
Instruction
JAMB Biology 2003
JAMB (UTME)
Biology
2003
Q9561.The umbrella-shaped fruiting body of a fully developed mushroom is the
Amycelium
Bbasidium
Cpileus
Dstipe
Correct Answer: C
The pileus is the umbrella-shaped cap of a mushroom.
JAMB (UTME)
Biology
2003
Q9562.The processes of water loss and intake indicated by the arrows labelled I and II are respectively
Aevaporation and osmosis
Bexhalation and osmosis
Cosmosis and diffusion
Durination and diffusion
Correct Answer: A
Water loss through the skin is evaporation, and water intake through the skin is osmosis.
JAMB (UTME)
Biology
2003
Q9563.A noticeable adaptation of the animal to its aquatic habitat is the possession of
Awebbed digits
Bfour limbs
Ca wide mouth
Dlarge eyes
Correct Answer: A
Webbed digits are an adaptation for swimming in aquatic habitats.
JAMB (UTME)
Biology
2003
Q9564.The similarity among organisms belonging to the same group will be least within each
Aorder
Bfamily
Cspecies
Dkingdom
Correct Answer: D
Organisms in the same kingdom have the least similarity (broadest category).
JAMB (UTME)
Biology
2003
Q9565.Hermaphroditic reproduction can be found among the
Aannelids and molluscs
Bpisces and amphibians
Ccoelenterates and platyhelminthes
Darthropods and nematodes
Correct Answer: A
Annelids (earthworms) and molluscs (snails) are hermaphroditic.
JAMB (UTME)
Biology
2003
Q9566.One distinctive feature in the life history of liverworts is that they exhibit
Avegetative reproduction
Balternation of generation
Csexual reproduction
Dasexual reproduction
Correct Answer: B
Liverworts exhibit alternation of generations between gametophyte and sporophyte.
JAMB (UTME)
Biology
2003
Q9567.Food is stored in the structure labelled
AIII
BIV
CI
DII
Correct Answer: A
Food is stored in the cotyledon (III) of the seed.
JAMB (UTME)
Biology
2003
Q9568.The structures that are common to both plant and animal cells are labelled
AII and III
BIII and IV
CIV and I
DI and II
Correct Answer: D
The nucleus (I) and cell membrane (II) are common to both plant and animal cells.
JAMB (UTME)
Biology
2003
Q9569.The cell component that is present in a prokaryotic cell is the
Aribosome
Bmitochondrion
Cchloroplast
Dnuclear envelope
Correct Answer: A
Prokaryotic cells have ribosomes but lack membrane-bound organelles.
JAMB (UTME)
Biology
2003
Q9570.In the egg of a bird, the embryo is located in the
Ayolk
Bembryo disc
Cchalaza
Dalbumen
Correct Answer: B
The embryo develops from the embryo disc (blastoderm) on the yolk.
JAMB (UTME)
Biology
2003
Q9571.An insect whose economic importance is both harmful and beneficial is the
Abutterfly
Bmosquito
Cblackfly
Dtsetse fly
Correct Answer: A
Butterflies are harmful (caterpillars destroy crops) and beneficial (pollinators).
JAMB (UTME)
Biology
2003
Q9572.The experiment is used to demonstrate that
Atranspiration occurs through the leaves
Bplants lose water through guttation
Cleaves are important to photosynthesis
Dwater is necessary for photosynthesis
Correct Answer: A
The experiment demonstrates transpiration through leaves.
JAMB (UTME)
Biology
2003
Q9573.In the experiment, the layer of oil serves to prevent water loss by
AOsmosis
BTranspiration
CEvaporation
DGuttation
Correct Answer: C
The oil layer prevents water loss by evaporation.
JAMB (UTME)
Biology
2003
Q9574.If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the
Aphloem
Bparenchyma
Cxylem
Depidermis
Correct Answer: C
Water travels through the xylem, so the red stain appears there.
JAMB (UTME)
Biology
2003
Q9575.The stunted growth of a leguminous plant suffering from nitrogen deficiency may be corrected by inoculating the soil with
Asaprophytic bacteria
Brhizobium
Cdenitrifying bacteria
Dnitrosomonas
Correct Answer: B
Rhizobium fixes nitrogen in root nodules of legumes.
JAMB (UTME)
Biology
2003
Q9576.Organisms I, II, III and IV have surface/volume ratios of 1:2, 1:3, 1:4 and 1:5 respectively. The organism that is likely to have the most complex transport system is
AIII
BIV
CII
DI
Correct Answer: B
Organism IV has the smallest surface/volume ratio, requiring the most complex transport system.
JAMB (UTME)
Biology
2003
Q9577.The aim of the experiment is to demonstrate
Athe presence of carbon (IV) oxide in exhaled air
Bthat mammalian gaseous exchange takes place in the lungs
Cthe part played by the pleural cavity and diaphragm in respiration
Dthat a large amount of oxygen is absorbed by the lungs
Correct Answer: C
The experiment demonstrates the role of the diaphragm and pleural cavity in respiration.
JAMB (UTME)
Biology
2003
Q9578.In the experimental set-up, the rubber sheet represents the organ called
Adiaphragm
Blungs
Cintercostal
Dpleural cavity
Correct Answer: A
The rubber sheet represents the diaphragm.
JAMB (UTME)
Biology
2003
Q9579.The part of the mammalian digestive system where absorption of nutrients takes place is the
Aduodenum
Bcolon
Cileum
Doesophagus
Correct Answer: C
The ileum is the main site of nutrient absorption.
JAMB (UTME)
Biology
2003
Q9580.The dark reaction of photosynthesis involves the
Arelease of oxygen and the splitting of water
Bphotolysis of water and the production of starch
Creduction of carbon (IV) oxide to organic compounds
Dsplitting of water into hydrogen ions
Correct Answer: C
The dark reaction (Calvin cycle) reduces CO₂ to organic compounds.
JAMB (UTME)
Biology
2003
Q9581.The most important hormone that induces the ripening of fruit is
ACytokinin
BIndole acetic acid
CEthylene
DGibberellin
Correct Answer: C
Ethylene is the hormone responsible for fruit ripening.
JAMB (UTME)
Biology
2003
Q9582.Metabolic production of urea is carried out in the
Aurinary bladder and kidney
Bpancreas
Ckidney and malpighian tubule
Dliver
Correct Answer: D
Urea is produced in the liver during deamination.
JAMB (UTME)
Biology
2003
Q9583.In mammalian males, the excretory and reproductive system share the
Aureter
Btestes
Cvas deferens
Durethra
Correct Answer: D
The urethra is shared by both the excretory and reproductive systems.
JAMB (UTME)
Biology
2003
Q9584.The best method of propagating sugarcane is by
Astem cuttings
Bseed sowing
Clayering
Dgrafting
Correct Answer: A
Sugarcane is propagated by stem cuttings.
JAMB (UTME)
Biology
2003
Q9585.The response of plants to external stimuli in a non-directional manner is known as
Anastic movement
Bphototropism
Ctactic
Dgeotropism
Correct Answer: A
Nastic movements are non-directional responses to stimuli.
JAMB (UTME)
Biology
2003
Q9586.The structure can be found in the
Aperipheral and central nervous systems
Bperipheral nervous system only
Csympathetic and parasympathetic nervous systems
Dcentral nervous system only
Correct Answer: D
The structure (motor neuron cell body) is found in the central nervous system.
JAMB (UTME)
Biology
2003
Q9587.The point marked I is referred to as
Amyelin sheath
Bdendrites
Cnode of Ranvier
Daxon
Correct Answer: C
The node of Ranvier is the gap between myelin sheaths.
JAMB (UTME)
Biology
2003
Q9588.Homologous pairs of chromosomes separate during
Ameiosis
Bcytokinesis
Cmitosis
Dcleavage
Correct Answer: A
Homologous chromosomes separate during meiosis I.
JAMB (UTME)
Biology
2003
Q9589.An example of a caryopsis is
Acoconut
Btomato
Cguava
Dmaize grain
Correct Answer: D
Maize grain is a caryopsis (pericarp fused with seed coat).
JAMB (UTME)
Biology
2003
Q9590.A limiting factor in a plant population near a chemical factory is likely to be
Ahumidity
BpH
Cwind
Dlight
Correct Answer: B
Chemical pollution affects soil pH, which becomes a limiting factor.
JAMB (UTME)
Biology
2003
Q9591.The pioneer organisms in ecological succession are usually the
Alichens
Balgae
Cferns
Dmosses
Correct Answer: A
Lichens are pioneer organisms on bare rock.
JAMB (UTME)
Biology
2003
Q9592.Mycorrhiza is an association between fungi and
Aroots of higher plants
Bfilamentous algae
Cbacteria
Dprotozoans
Correct Answer: A
Mycorrhiza is a symbiotic association between fungi and plant roots.
JAMB (UTME)
Biology
2003
Q9593.A density-dependent factor that regulates the population size of organisms is
Asudden flood
Bdisease
Cfire outbreak
Ddrought
Correct Answer: B
Disease is a density-dependent factor (spreads faster in crowded populations).
JAMB (UTME)
Biology
2003
Q9594.The most effective method of dealing with non-biodegradable pollution is by
Aburying
Bdumping
Cincineration
Drecycling
Correct Answer: D
Recycling is the most effective way to manage non-biodegradable waste.
JAMB (UTME)
Biology
2003
Q9595.Soil fertility can best be conserved and renewed by the activities of
Amicrobes
Bearthworms
Cman
Drodents
Correct Answer: B
Earthworms improve soil fertility by aerating and mixing organic matter.
JAMB (UTME)
Biology
2003
Q9596.The correct sequence of biomes from northern to southern Nigeria is