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Biology
UTME / JAMB 2018
Excretion & Homeostasis
Solution
Which of the following groups of organisms has kidney as the excretory organ?
A
Fishes, amphibians, birds, man
B
Fishes, amphibians, annelids, insects
C
Fishes, reptiles, birds, tapeworm
D
Fishes, protozoans, amphibians, man
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
All of the organisms listed in option A use kidneys as their excretory organ.
Source: Myschool Past Questions Archive (Record #47175)
Biology
UTME / JAMB 2018
Transport System in Plants & Animals
Solution
Which of the following features is not a characteristic of arteries? Arteries
A
possess valves at internals throughout their length
B
have thick muscular and elastic walls
C
carry blood away from the heart
D
transport oxygenated blood with the exception of the pulmonary artery
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
*Caries blood away from heart
*Thick, muscular, elastic wall
*Blood is at high pressure and flows fast in spurts(pulse waves)
*Valves absent (except for semi-lunar valves near the heart)
*Blood is oxygenated (except that is pulmonary arteries)
Source: Myschool Past Questions Archive (Record #47176)
Biology
UTME / JAMB 2018
Variety of Organisms & Classification of Living Things
Diagram
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?
Attached Figure / Diagram
A
The bird's blood was always warmer than that of the lizard
B
The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
C
The body temperature of the bird remained constant despite changes in environmental temperature
D
The body temperature of the lizard was always close to that of the environmental temperature
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 #47177)
Biology
UTME / JAMB 2018
Excretion & Homeostasis
Diagram
Solution
The graph above shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
What physiological term can be used to describe the regulation of the body temperature of the of the Lizard?
Attached Figure / Diagram
A
Homeostasis
B
Homoithermy
C
Poikilothermy
D
Osmoregulation
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Poikilotherm: An animal that varies its internal body temperature within a wide range of temperatures, usually as a result of variation in the environmental temperature.
Homeotherm: An animal that maintains a constant internal body temperature, usually within a narrow range of temperatures.
Homeostasis is the body's ability to maintain a stable internal environment despite external changes, encompassing processes like temperature regulation, blood sugar control, and fluid balance.
Osmoregulation is the active regulation of an organism's body fluids to maintain the homeostasis of its water content and salt balance, essential for metabolic activities and survival.
The body temperature regulation of a lizard is best described as poikilothermy (or ectothermy), as their body temperature fluctuates with the environment, unlike the homeothermic regulation seen in mammals and birds.
Source: Myschool Past Questions Archive (Record #47178)
Biology
UTME / JAMB 2018
Variety of Organisms & Classification of Living Things
The reason why hospitals use saline solutions as drip Instead of water is
A
because salt is a preservative
B
to prevent contamination of the body
C
to maintain the composition of body fluids
D
to increase the number of blood cells
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 #47179)
Biology
UTME / JAMB 2018
Nervous, Hormonal Coordination & Sense Organs
Solution
The part of the ear which contains nerve cells sensitive to sound vibrations is the
A
cochlea
B
ampulla
C
tympanum
D
malleus
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The cochlea (auditory inner ear) transforms the sound in neural message. The function of the cochlea is to transform the vibrations of the cochlear liquids and associated structures into a neural signal.
Source: Myschool Past Questions Archive (Record #47180)
Biology
UTME / JAMB 2018
Variety of Organisms & Classification of Living Things
Spectacles with convex lenses correct long-sightedness by
A
converging the light rays before they enter the eye
B
diverging the light rays before they enter the eye
C
reducing the light intensity before it enters the eye
D
increasing the light intensity before it enters the eye
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 #47181)
Biology
UTME / JAMB 2018
Reproduction in Plants & Animals
A seed of a flowering plant can best be described as
A
radicle and plumule
B
the developed ovule
C
the embryo and endosperm
D
developed ovary
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 #47182)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following processes removes carbon from the atmosphere?
A
putrefaction
B
photosynthesis
C
volcanic eruption
D
burning of fuels
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 #47183)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following cycles involves the process of precipitation and transpiration?
A
water cycles
B
carbon cycle
C
nitrogen cycle
D
oxygen cycle
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 #47184)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?
A
availability of nutrients
B
availability of water
C
intensity of light
D
carbon dioxide concentration
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 #47185)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following instruments is used to estimate the number of plants in a habitat?
A
pooter
B
pitfall trap
C
quadrant
D
sweep net
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 #47186)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following statements is true about sandy soil?
A
has limited air space
B
is light and easy to dig
C
drains slowly
D
is heavy and poorly aerated
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 #47187)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Which of the following organisms is a primary consumer?
A
dog
B
sheep
C
grass
D
fungus
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 #47188)
Biology
UTME / JAMB 2018
Basic Ecological Concepts, Ecosystems & Biomes
Study the diagram of a food chain shown and use; it to answer the question.
P ---> Q ---> R ---> S ---> T
The organism designated P in the food chain above is normally sustained by energy from
A
sunlight
B
carbohydrates
C
green plants
D
mineral salts
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 #47189)