2002 - JAMB Biology Past Questions and Answers - page 2
11
A step in the movement of energy through an ecosystem is a description that best fits the term
A
food chain
B
trophic level
C
pyramid of numbers
D
food web
correct option: b
Users' Answers & Comments12
In a field experiment, the frequency of water leaf was observed to be 48 after 20 tosses of a 2m2 quadrat. What is the density of the plants in the field?
A
1.2 per m2
B
2.4 per m2
C
4.8 per m2
D
9.6 per m2
correct option: a
Users' Answers & Comments13
The supporting tissue in xylem is most poorly developed in
A
mangrove swamp plants
B
grassland plants
C
submerged water plants
D
desert plants
correct option: c
Users' Answers & Comments14
The addition of lime to clayed soil serves to
A
aid water retention
B
close up the texture
C
prevent water logging
D
improve capillary action
correct option: d
Users' Answers & Comments15
The excessive use of agro-chemicals could lead to the pollution of
A
the lithosphere
B
the atmosphere
C
fresh water
D
space
correct option: c
Users' Answers & Comments16
In a population study using the transect method, a student is likely to record the highest number of species in
A
a tropical rain forest
B
a guinea savanna
C
a sahel savanna
D
an estuarine swamp
correct option: a
Users' Answers & Comments17
In his theory of evolution, Darwin implied that
A
the struggle for existence among living organisms is sporadic
B
the most successful organisms are those that best adapt to their environment
C
organs of the body which are not regularly used by an organism will disappear
D
any traits acquired by an organism during its lifetime can be passed on its offspring
correct option: b
Users' Answers & Comments18
The carnassial teeth of a carnivorous animal consist of the
A
last upper premolar and the first lower molar
B
last upper molar and the last lower molar
C
first upper premolar and the lower molar
D
first upper molar and the first lower molar
correct option: a
Users' Answers & Comments19
Birds which are large with long straight pointed beaks, long necks and long legs are likely to be
A
insect eaters
B
fish catchers
C
nectar feeders
D
fruit eaters
correct option: c
Users' Answers & Comments20
A feature of the caste system of bees and termites ia that
A
the workers are sterile
B
the kings are bigger than the queens
C
only the worker perform duties
D
nuptial flight is performed by all members
correct option: a
Users' Answers & Comments