Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
The anatomical evidence usually used in support of the evolutionary relationship among whales, human, birds, and dogs is the possession of
Athick skin
Bpentadactyl limb
Ctail
Depidermal structure
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Question 34
jamb1994
A phenomenon by which an animal goes into a state of dormancy during the dry season is called
Ahibernation
Baestivation
Cincubation
Ddeactivation
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Question 35
jamb1994
Red coloration on the head of a male lizard helps it to
Amark is territory
Bcamouflage in the enviroment
Csecure its mate
Ddefend itself
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Question 36
jamb1994
Breathing root is an adaptation for survival in the
Amangrove swamp
Bdesert
Carboreal habitat
Dsavanna
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Question 37
jamb1994
A man who has the trait for colour blindness marries a normal woman. What percentage of their children would be sufferers, carriers and normal respectively
A25%, 25% and 50%
B25%, 50% and 25%
C50%, 25% and 25%
D25%, 37.5% and 37%
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Question 38
jamb1994
The sex-linked defect in which very slight cut produces severe bleeding is known as
Aanaesmia
Banorexia
Chaemophilia
Dhaemolysis
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Question 39
jamb1994
If a woman's genotype is Tt Qq Rr, what would be the gene content of her eggs?
ATQr, tqr
BTQR, tqr
CTqR, tQr
DtQr, TQR
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Question 40
jamb1994
In the gene locus for eye colour in humans, the allele for brown eye is dominant over the allele for blue eyes. If a homozygous brown-eyed girl has a brother with blue eyes, what are the likely phenotypes of there parents'eye colour (Eye colour is not a sex linked trait)
ABoth parents have blue eyes
BTheir father has blue eyes and their mother has brown eyes
Cboth parents have brown eyes
DTheir mother has the blue eyes and their father has the brown eyes
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Question 41
jamb1994
People wit sickle-cell anaemia have haemoglobin
AS and are homozygous recessive
BA and are heterozygous recessive
CS and are heterozygous recessive
DA and are homozygous recessive
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Question 42
jamb1994
The difference and similarities among living things account for
Adiversity
Bstability
Ccompetition
Devolution
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Question 43
jamb1994
People who suck petrol with their mouths run the risk of increasing in their blood the concentration of
Airon
Blead
Ccalcium
Dmagnesium
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Question 44
jamb1994
The water-retention capacity of a soil indicates its
Afertility
Bcapilarity
Caeration level
DpH level
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Question 45
jamb1994
In a drought situation, plants suffer from water stress which could result in
Areduced biochemical activities
Benhanced chemical activities
Cenhanced microbial activities
Dreduced phototropic activities
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Question 46
jamb1994
Ecological succession ends with the formation of a stable
Aniche
Bpopulation
Cpioneer community
Dclimax community
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Question 47
jamb1994
Use the list of biomes below to answer the question below
1. Desert 2. Rain forest 3. Southern Guinea savannah 4. Northern Guinea savannah
A biome where there are many cacti and the small mammals undergo aestivation for long periods is
A1
B2
C3
D4
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Question 48
jamb1994
Use the list of biomes below to answer the question below
1. Desert 2. Rain forest 3. Southern Guinea savannah 4. Northern Guinea savannah
A biome with a low annual rainfall, few scattered trees within dense layer of grasses and found in Kano and Katsina States
A1
B2
C3
D4
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Question 49
jamb1994
The organisms with the least number of individuals in a pyramid of numbers are the
Asecondary consumers
Btertiary consumers
Cprimary producers
Dprimary consumers
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Question 50
jamb1994
The correct order in a food chain involving the organisms (1)Grasses, (2)Hawks, (3)Snakes, (4)Grasshopper, (5)Lizards is
