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Biology
UTME / JAMB 2011
Growth, Micro-organisms & Public Health
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
A
liver of humans
B
reticuloendothelial cells of humans
C
Malphigian tubules of mosquito
D
brain of humans
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #29676)
Biology
UTME / JAMB 2011
Basic Ecological Concepts, Ecosystems & Biomes
Habitats are generally classified into
A
biotic and abiotic
B
aquatic and terrestrial
C
aboreal and marine biomes
D
microhabitats and macrohabitats
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #29677)
Biology
UTME / JAMB 2011
Growth, Micro-organisms & Public Health
Drancunculiasis can be contacted through
A
eating contaminated food
B
drinking contaminated water
C
bathing in contaminated water
D
bites of blackfly
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #29679)
Biology
UTME / JAMB 2011
Population Ecology, Habitats & Conservation
Which of the following groups of environmental factors are density-dependent?
A
Food, salinity, accumulation of matabolites and light
B
Temperature, salinity predation and disease
C
Food predation, disease and accumulation of metabolites
D
Temperature food disease and light
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #29681)
Biology
UTME / JAMB 2011
Basic Ecological Concepts, Ecosystems & Biomes
Solution
Millet , sorghum, maize and onions are common crops growth in Nigeria in the
A
tropical rainforests
B
sudan savanna
C
montane forests
D
sahel savanna
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
the sudan savanna climate supports the growth of these crops.
Source: Myschool Past Questions Archive (Record #29684)
Biology
UTME / JAMB 2011
Basic Ecological Concepts, Ecosystems & Biomes
In which of the following biomes is the south western part of Nigeria located?
A
Temperate forest
B
Tropical rainforest
C
Tropical woodland
D
Desert
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #29685)
Biology
UTME / JAMB 2011
Variation & Genetics (Heredity)
The inheritable characters that are determined by a gene located on the X-chromosome is
A
recessive
B
sex-linked
C
homozygous
D
dominant
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #29687)
Biology
UTME / JAMB 2011
Variety of Organisms & Classification of Living Things
Lack of space in a population could lead to an increase in
A
water scarcity
B
birth rate
C
disease rate
D
dought
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #29688)
Biology
UTME / JAMB 2011
Variation & Genetics (Heredity)
Solution
If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of
A
codominance
B
incomplete dominance
C
mutation
D
linkage
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
In incomplete dominance, neither allele for a trait is completely dominant, resulting in a heterozygous offspring that displays a blended phenotype between the two parent traits. For example, crossing a red flower plant with a white flower plant will produce pink flower plants. This differs from complete dominance where the dominant allele masks the recessive one, and from codominance where both alleles are expressed.
(see diagram above)
Source: Myschool Past Questions Archive (Record #29689)
Biology
UTME / JAMB 2011
Adaptation & Evolution
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
A
Variation
B
Survival of the fittest
C
Use and disuse
D
Competition
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #29690)
Biology
UTME / JAMB 2011
Variation & Genetics (Heredity)
The crossing of individuals of the same species with different genetic characters is
A
cross breeding
B
polygenic inheritance
C
non-disjunction
D
inbreeding
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #29691)
Biology
UTME / JAMB 2011
Variation & Genetics (Heredity)
The number of alleles controlling blood groups in humans
A
3
B
4
C
5
D
2
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #29693)
Biology
UTME / JAMB 2011
Growth, Micro-organisms & Public Health
Solution
During blood transfusion, agglutination may occur as a result of the reaction between
A
contrasting antigens and antibodies
B
two different antigens
C
two different antibodies
D
similar antigens and antibodies
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Agglutination during blood transfusion occurs when:
- Red blood cells from the donor have antigens on their surface that are different from the recipient's antigens.
- The recipient's immune system recognizes these foreign antigens and produces antibodies against them.
- The antibodies bind to the antigens on the donor's red blood cells, causing them to clump together (agglutinate).
This reaction can lead to serious complications, including hemolysis (red blood cell destruction) and even death. To prevent this, blood types are carefully matched before transfusion.
The correct answer is option A. contrasting antigens and antibodies.
Source: Myschool Past Questions Archive (Record #29694)
Biology
UTME / JAMB 2011
Adaptation & Evolution
The fallacy in Lamarck's evolutionary theory was the assumption that
A
traits are acquired through disuse of body parts
B
acquried traits are heritable
C
acquired traits are seldom formed
D
traits are acquired through the use of body parts
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #29699)
Biology
UTME / JAMB 2011
Adaptation & Evolution
The bright coloured eye spots on the wings of moth are an example of
A
warning colouration
B
disruptive colouration
C
crypsis
D
mimicry
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #29700)