2018 - JAMB Biology Past Questions and Answers - page 3
21
Which of the following processes removes carbon from the atmosphere?
A
putrefaction
B
photosynthesis
C
volcanic eruption
D
burning of fuels
22
Which of the following cycles involves the process of precipitation and transpiration?
A
water cycles
B
carbon cycle
C
nitrogen cycle
D
oxygen cycle
23
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
24
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
25
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
26
Which of the following organisms is a primary consumer?
A
dog
B
sheep
C
grass
D
fungus
27
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
28
Study the diagram of a food chain shown and use; it to answer the question.
P ---> Q ---> R ---> S ---> T
Which of the following statements best describes the organism designated R? It
A
feeds on S
B
is a primary consumer
C
is a producer as well as a consumer
D
is a secondary consumer
29
Which of the following diseases is not hereditary?
A
Albinism
B
Scabies
C
Haemophilla
D
Colour blindness
30
The immediate product of meiosis in flowering plants is the
A
sporophyte
B
gametophyte
C
zygote
D
pollen grains
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