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Biology
UTME / JAMB 1987
Nervous, Hormonal Coordination & Sense Organs
Unlike auxins, gibberellins
A
induces the formation of adventitious roots
B
do not affect leaf and fruit abscission
C
cannot stimulate stem elongation
D
are quite effective as herbicides
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 #3721)
Biology
UTME / JAMB 1987
Variation & Genetics (Heredity)
A gene which expresses itself only in the homozygous condition is
A
a mutant
B
dominant
C
recessive
D
lethal
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 #3722)
Biology
UTME / JAMB 1987
Nervous, Hormonal Coordination & Sense Organs
An example of monohybride inheritance in man is
A
astigmatism
B
cretinism
C
hyperthyroidism
D
albinism
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 #3723)
Biology
UTME / JAMB 1987
Variation & Genetics (Heredity)
If a plant homozygous for round and yellow (RR : YY), is crossed with a wrinkle green type (rr : yy) all of the resulting seeds will be
A
blue and wrinkled
B
round and yellow
C
wrinkled and yellow
D
round and greenish yellow
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 #3724)
Biology
UTME / JAMB 1987
Variation & Genetics (Heredity)
The ratio of carriers to sicklers in the F1 generation derived from a parental cross of two carriers of haemoglobin S gene is
A
3 : 1
B
1 : 3
C
2 : 1
D
1 : 2
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 #3725)
Biology
UTME / JAMB 1987
Variety of Organisms & Classification of Living Things
In which of the following crosses will all the female offspring be colour blind?
A
colour blind mother x colour blind father
B
colour blind mother x normal father
C
carrier mother x colour blind father
D
carrier mother x normal father
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 #3726)
Biology
UTME / JAMB 1987
Basic Ecological Concepts, Ecosystems & Biomes
Solution
Which of the following relates to edaphic factors?
A
The structure of the earth's surface
B
The influence of living organisms on each other
C
Temperature, rainfall and humidity
D
The influence of soils on plant and animals
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Edaphic factors are soil-related abiotic (non-living) elements that influence the distribution and abundance of organisms, including soil texture, pH, water content, and nutrient availability.
Source: Myschool Past Questions Archive (Record #3727)
Biology
UTME / JAMB 1987
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Epiphytes growing on the branches of trees provide an example of the relationship known as
A
parasitism
B
commensalism
C
saprophytism
D
holophytism
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 #3929)
Biology
UTME / JAMB 1987
Growth, Micro-organisms & Public Health
Poliomyelitis is an infectious diseases caused by
A
virus
B
protozoan
C
bacterium
D
fungus
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 #3930)
Biology
UTME / JAMB 1987
Growth, Micro-organisms & Public Health
One of the functions of UNICEF is to
A
prevent and control major disease
B
prevent diseases outbreak by administering vaccines
C
improve the health and nutrition of children and nursing mothers
D
monitir enviromental pollution
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 #3931)
Biology
UTME / JAMB 1987
Basic Ecological Concepts, Ecosystems & Biomes
Nitrifying bacteria are important because they
A
release nitrogen to the atmosphere
B
convert atmospheric nitrogen to ammonia
C
combine ammonia with nitrgen
D
oxidize ammmonium salt to nitrates
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 #3932)
Biology
UTME / JAMB 1987
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The process by which lime is added to clay soil is known as
A
sedimentation
B
flocculation
C
leaching
D
manuring
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 #3933)
Biology
UTME / JAMB 1987
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
Diagram
Solution
Which of the plants is likely to have broad leaves and thin cuticle?
Attached Figure / Diagram
A
R
B
S
C
T
D
U
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The rate of nutrient concentration in plants, when plotted against time of day, typically follows a curve with a peak during the day, as photosynthesis and nutrient uptake are highest during daylight hours, and then declines at night.
During the day, plants use sunlight to produce sugars through photosynthesis, which are then used as energy and building blocks for growth. The energy produced during photosynthesis fuels the uptake of nutrients from the soil. As a result of these processes, nutrient concentrations in plant tissues tend to be higher during the day when photosynthesis and nutrient uptake are most active.
Plant R has the highest peak during the day showing that the nutrient concentration in plant tissues are higher thereby, making the leaves broader and the cuticle thinner.
Source: Myschool Past Questions Archive (Record #15547)
Biology
UTME / JAMB 1987
Variety of Organisms & Classification of Living Things
Diagram
Solution
Which of the plants is likely to be desert species?
Attached Figure / Diagram
A
U
B
T
C
S
D
R
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Notice the rate of concentration for Plant U was steadily increased with increasing sunlight, and started dropping once the sun started going down. Hence, it would be easier for U to survive easily in the desert.
Source: Myschool Past Questions Archive (Record #15548)
Biology
UTME / JAMB 1987
Reproduction in Plants & Animals
Diagram
The flower shown above is
Attached Figure / Diagram
A
complete, regular, hermaphroditic with superior ovary
B
incomplete, regular, staminate with inferior ovary
C
complete, regular, hermaphroditic with inferior ovary
D
incomplete, irregular, pistillate with superior ovary
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 #15549)