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10,710 questions available
Showing 9051–9100 of 10710 questions
Instruction
JAMB Biology 1992
JAMB (UTME) Biology 1992
Q9051. Which of the following is true of the children of a haemophilic man who marries a woman that is not haemophilic and does not carry the trait?
A All their sons will be haemophilic
B All their daughters will be haemophilic
C All their daughters will be carriers
D All their sons will be carriers
JAMB (UTME) Biology 1992
Q9052. A child with blood group genotype different from those of both parents and with a mother of genotype OO, can only have a father of genotype
A A
B B
C AB
D OO
JAMB (UTME) Biology 1992
Q9053. If R and r denote the genes for a character, the offspring of the cross between RR and Rr are
A RR, 2Rr, rr
B 2RR, 2rr
C 2RR, 2Rr
D 4Rr
JAMB (UTME) Biology 1992
Q9054. A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had red fur and short ears, then the
A characters are linked
B characters are not linked
C parents are related
D parents are not related
JAMB (UTME) Biology 1992
Q9055. Pawpaw seeds collected from a tree with many desirable agronomic qualities did not give rise to plants of desirable characters as the parent because
A seeds are not reliable for propagating plants
B uncontrolled out-crossing can introduce unwanted variability
C vegetative propagation is the best form of reproduction for all crops
D seeds were not physiologically mature at harvest
JAMB (UTME) Biology 1992
Q9056. Women do not suffer from colour blindness
A because the trait is sex-linked
B only men are colour blind
C the genes are recessive and sex-linked
D the genes occur on both the X and Y chromosomes
JAMB (UTME) Biology 1992
Q9057. The hereditary material of the cells is
A the RNA
B protein
C the DNA
D carbohydrate
JAMB (UTME) Biology 1992
Q9058. An example of plant adaptation to a xerophytic environment is represented by the development of
A fleshy tissues and reduced leaves
B broad canopy and extensive surface root system
C thick barks and broad leaves
D rough leaves and shallow root system
JAMB (UTME) Biology 1992
Q9059. Which of the following factors is LEAST likely to affect the animals living in a fresh water habitat?
A Turbidity
B Temperature
C pH
D Salinity
JAMB (UTME) Biology 1992
Q9060. The theory of natural selection was developed by
A Lamarck and Darwin
B Darwin and Wallace
C Wallace and Mendel
D Mendel and Lamarck
JAMB (UTME) Biology 1992
Q9061. Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because
A the deposits have remains of organisms characteristic of when they were formed
B different strata have remains of organisms of the same kind
C only organisms with strong parts are fossilized
D most animals and plant fossils bear little resemblance to present day living specimens
Instruction
JAMB Biology 1993
JAMB (UTME) Biology 1993
Q9062. On what structures are the units of inheritance situated?
A Golgi bodies
B Ribosomes
C Chromosomes
D Endoplasmic reticulum
JAMB (UTME) Biology 1993
Q9063. Production of naked seeds is a distinctive feature of the group of plants called
A grasses
B conifers
C legumes
D palms
JAMB (UTME) Biology 1993
Q9064. In which of these features do bryophytes differ from pteridophytes?
A Absence of flower
B Alternation of generation
C Dependence on water for reproduction
D Presence of a vascular system
JAMB (UTME) Biology 1993
Q9065. Which of the following organs or cell components are common to both the sporophyte and the gametophyte of a fern?
A Rhizoids
B Roots
C Chloroplasts
D Leaves
JAMB (UTME) Biology 1993
Q9066. In which of the following organisms does a single cell perform all the functions of movement, nutrition, growth, excretion and photosynthesis?
A Paramecium
B Euglena
C Amoeba
D Spirogyra
JAMB (UTME) Biology 1993
Q9067. In which of the following organisms would glycogen be stored?
A Spirogyra
B Chlamydomonas
C Rattus
D Mangifera
JAMB (UTME) Biology 1993
Q9068. The most successful group of animals in terms of diversity of species is
A mollusca
B arthropoda
C mammalia
D platyhelminthes
JAMB (UTME) Biology 1993
Q9069. Flame cells are the
A excretory system of worms
B excretory and respiratory system of flatworms
C excretory system of flatworms
D excretory system of flatworms
JAMB (UTME) Biology 1993
Q9070. The spores of Mucor are dispersed by
A water
B wind
C insects
D explosive mechanism
JAMB (UTME) Biology 1993
Q9071. Which of the following is the correct order of the development stages?
A 1 → 2 → 3 → 4 → 5
B 5 → 1 → 3 → 2 → 4
C 2 → 1 → 3 → 4 → 5
D 5 → 3 → 2 → 1 → 4
JAMB (UTME) Biology 1993
Q9072. Stage 3 breathes
A with the lungs
B with the external gills
C with the internal gills
D through the skin
JAMB (UTME) Biology 1993
Q9073. The butterfly is of great economic importance because
A of its use in scientific studies
B it sucks nectar from flowers
C it adds to the beauty of the environment
D it pollinates flowers of crops and other plants
JAMB (UTME) Biology 1993
Q9074. Manufactured food in plants is transported throughout by the
A xylem
B phloem
C cambium
D cortex
JAMB (UTME) Biology 1993
Q9075. Interveinal chlorosis is normally associated with the deficiency of
A magnesium
B potassium
C iron
D calcium
JAMB (UTME) Biology 1993
Q9076. Osmic acid boiled with a solution of food substance gave a black precipitate. This indicated the presence of
A fats and oils
B proteins
C amino acids
D starch
JAMB (UTME) Biology 1993
Q9077. Which of the labelled parts is the diastema?
A 2
B 3
C 4
D 6
JAMB (UTME) Biology 1993
Q9078. The lower jaw is typical of a
A sheep
B rabbit
C dog
D cat
JAMB (UTME) Biology 1993
Q9079. The end products of the digestion of fats and oils in mammals are
A maltose and fatty acids
B amino acids and glucose
C fatty acids and fructose
D fatty acids and glycerol
JAMB (UTME) Biology 1993
Q9080. Blood is pumped into the right ventricle by the contraction of the auricle wall through
A 1
B 3
C 5
D 6
JAMB (UTME) Biology 1993
Q9081. After circulation in the lungs, the blood returns to the left auricle through
A 1
B 4
C 5
D 6
JAMB (UTME) Biology 1993
Q9082. The main function of blood in mammals is to transport
A excretory materials from tissues
B carbon dioxide from lungs to tissues
C digested food from all the body tissues
D oxygen to the lungs
JAMB (UTME) Biology 1993
Q9083. Members of the phylum Protozoa use the contractile vacuole
A to remove excess food
B for movement
C for digestion
D to remove excess water
JAMB (UTME) Biology 1993
Q9084. The response shown by the tips of the root and shoot of a plant to the stimulus of gravity is
A haptotropism
B phototropism
C hydrotropism
D geotropism
JAMB (UTME) Biology 1993
Q9085. Which of the following is the correct order of the vertebrae along the spinal column?
A Axis-atlas-thoracic-lumbar-cervical-sacral
B Atlas-cervical-axis-thoracic-lumbar-sacral
C Atlas-axis-cervical-thoracic-lumbar-sacral
D Axis-cervical-thoracic-sacral-lumbar
JAMB (UTME) Biology 1993
Q9086. Which of the following is TRUE of the process of conjugation in Paramecium?
A Micronucleus disintegrates
B Each ex-conjugant divides only once
C Macronucleus undergoes division
D Each micronucleus divides twice
JAMB (UTME) Biology 1993
Q9087. The bright colours of the comb and feathers in the peacock are used for
A attracting a mate
B warning predators
C camouflage
D temperature regulation
JAMB (UTME) Biology 1993
Q9088. The main function of the petal of a flower is to
A attract pollination agents
B protect the flower while still in bud
C serve as landing stage for insects
D protect the inner parts from desiccation
JAMB (UTME) Biology 1993
Q9089. In the mammal, the autonomic nervous system consists of
A sympathetic and parasympathetic systems
B brain and spinal nerves
C brain and cranial nerves
D spinal cord and spinal nerves
JAMB (UTME) Biology 1993
Q9090. In H, the cotyledons are carried above the soil because
A the epicotyl grows faster than the hypocotyl
B the hypocotyl grows faster than the epicotyl
C both grow at the same rate
D the epicotyl outgrows the radicle
JAMB (UTME) Biology 1993
Q9091. The function of the structure labelled G is to
A carry out initial photosynthesis for the seedling
B protect the young leaves from mechanical damage
C protect the young leaves from sunlight
D protect the young leaves from insects
JAMB (UTME) Biology 1993
Q9092. When it is cold, the blood vessels of the skin
A dilate to increase the amount of blood flowing to the skin
B constrict to reduce the amount of blood flowing to the skin
C dilate to reduce the amount of blood flowing to the skin
D constrict to increase the amount of blood flowing to the skin
JAMB (UTME) Biology 1993
Q9093. Which path does sound entering the human ear follow?
A Oval window → ossicles → ear drum
B Ear drum → oval window → ossicles
C Ear drum → ossicles → oval window
D Ossicles → ear drum → oval window
JAMB (UTME) Biology 1993
Q9094. What would happen to a man whose pancreas has been surgically removed?
A The level of blood sugar would increase.
B The glycogen content of the liver would increase.
C His blood pressure would decrease.
D His weight would increase appreciably.
JAMB (UTME) Biology 1993
Q9095. Carnivorous plants are usually found in areas
A which are deficient in nitrate
B which are deficient in oxygen
C with low pH
D where insects are abundant
JAMB (UTME) Biology 1993
Q9096. What is the term used to describe the sum total of biotic and abiotic factors in the environment of an organism?
A Habitat
B Biome
C Ecosystem
D Ecological niche
JAMB (UTME) Biology 1993
Q9097. Important abiotic factors which affect all plants and animals in the habitat are
A temperature and turbidity
B rainfall and relative humidity
C salinity and wind direction
D temperature and rainfall
JAMB (UTME) Biology 1993
Q9098. The most important physical factor which affects an organism living in the intertidal zone of the seashore is
A pH
B salinity
C wave action
D temperature
JAMB (UTME) Biology 1993
Q9099. At which trophic level would the highest accumulation of a non-biodegradable substance occur?
A Primary producers
B Tertiary consumers
C Primary consumers
D Secondary consumers
JAMB (UTME) Biology 1993
Q9100. Two organisms of different species, living in close association but not dependent on each other are referred to as
A parasites
B commensals
C symbionts
D autotrophs