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Biology
UTME / JAMB 2012
Excretion & Homeostasis
In the kidney of mammals, the site of ultrafiltration is the
A
uriniferous tubule
B
Bowman's capsule
C
loop of Henle
D
renal tubule
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 #29729)
Biology
UTME / JAMB 2012
Supporting Tissues & Skeletal System
Which of the following is involved in secondary thickening in plants?
A
Collenchyma and xylem cells
B
Vascular cambium
C
Cork cambium and sclerenchyma
D
Vascular cambium and cork cambium
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 #29731)
Biology
UTME / JAMB 2012
Reproduction in Plants & Animals
An example of a fruit that develops from a single carpel is
A
okro
B
tomato
C
bean
D
orange
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 #29732)
Biology
UTME / JAMB 2012
Nervous, Hormonal Coordination & Sense Organs
Solution
Plant growth can be artificially stimulated by the addition of
A
gibberellin
B
kinin
C
abscisic acid
D
ethylene
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Auxin, cytokinin, and gibberellin are plant hormones that promote plant growth. Ethylene and abscisic acid (ABA) are plant hormones that inhibit plant growth.
Auxin: Promotes cell elongation, organ formation, and differentiation. Auxin is responsible for the overall growth of plants, including stem elongation and root growth.
Cytokinin: Responsible for cell division in meristematic tissues. Cytokinins are located in the root and shoot tips of plants.
Gibberellin: Responsible for stem, root, and seed growth. Dwarf plants can be treated with gibberellins to promote stem growth.
Ethylene: Responsible for the aging of plants. Ethylene is a gas that is released from ripening fruit.
Abscisic acid (ABA): Responsible for the dormancy of different organs such as the lateral buds and seeds of plants.
Source: Myschool Past Questions Archive (Record #29734)
Biology
UTME / JAMB 2012
Nervous, Hormonal Coordination & Sense Organs
The autonomic nervous system consists of neurons that control the
A
voluntary muscles
B
heart beat
C
tongue
D
hands
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 #29735)
Biology
UTME / JAMB 2012
Basic Ecological Concepts, Ecosystems & Biomes
The water cycle is maintained mainly by
A
evaporation of water in the environment
B
evaporation and condensation of water in the environment
C
condensation of water in the environment
D
transpiration and respiration in plants
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 #29737)
Biology
UTME / JAMB 2012
Basic Ecological Concepts, Ecosystems & Biomes
Plants of temperate origin can be grown in tropical areas in the vegetation zones of the
A
rain forest
B
guinea savanna
C
sudan savanna
D
montane forest
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 #29738)
Biology
UTME / JAMB 2012
Basic Ecological Concepts, Ecosystems & Biomes
Solution
The abiotic factors that control human population include
A
disease and famine
B
space and rainfall
C
flooding and earthquake
D
temperature and disease
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Flooding and earthquakes are examples of abiotic factors that control the human population.
Source: Myschool Past Questions Archive (Record #29745)
Biology
UTME / JAMB 2012
Digestive System & Feeding Mechanisms
An indigenous method of renewing and maintaining soil fertility is by
A
clearing farms by burning
B
planting one crop type
C
adding inorganic fertilizers yearly
D
crop rotation and shifting cultivation
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 #29746)
Biology
UTME / JAMB 2012
Growth, Micro-organisms & Public Health
The diseases caused by water-borne pathogens include
A
gonorrhoea and poliomyelitis
B
typhoid and syphilis
C
tuberculosis and cholera
D
typhoid and cholera
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 #29747)
Biology
UTME / JAMB 2012
Variation & Genetics (Heredity)
Which of the following is true in blood transfusion?
A
person of blood group AB can donate blood only to another person of blood group AB
B
persons of blood groups A and B can donate or receive blood from each other
C
A person of blood group AB acn receive blood only from persons of blood group A or B
D
A person of blood group O can donate only to a person of blood group O
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 #29748)
Biology
UTME / JAMB 2012
Variation & Genetics (Heredity)
A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are croos-bred, yellow seeds and white seeds are obtained in a ratio 3:1 . The yellow seed is said to be
A
non-heritable
B
sex-linked
C
a recessive trait
D
a dominant trait
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 #29750)
Biology
UTME / JAMB 2012
Basic Ecological Concepts, Ecosystems & Biomes
Organisms living in an estuarine habitat are adapted to
A
withstand wide fluctuations in temperature
B
survive only in water with low salinity
C
withstand wide fluctuations in salinity
D
feed only on phytoplankton and dead organic matter
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 #29740)
Biology
UTME / JAMB 2012
Basic Ecological Concepts, Ecosystems & Biomes
The presence of stilt roots, pneumatophores, sunken stomata and salt glands are adaptive features of plants found in the
A
tropical rainforest
B
mangrove swamps
C
gressland
D
montane forest
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 #29741)
Biology
UTME / JAMB 2012
Population Ecology, Habitats & Conservation
Which of the following animals can exist solely on the water they get from food and metabolic reactions?
A
forest arboreal dweller
B
Desert dwellers
C
forest-ground dweller
D
rainforest dwellers
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 #29742)