1998 - JAMB Biology Past Questions & Answers - page 1

1
The nucleus is considered the central organelle of a cell because it
A
contains the genetic material
B
contains the nuclear sap
C
is bounded by the nuclear membrane
D
is located at the center of the cell
CORRECT OPTION: a
2
The procaryotic cell type is characterized by a
A
complex cytoplasm in which different regions are poorly defined
B
localization of different regions of the cell into tissues
C
collection of organelles and macromolecular complexes
D
simple cytoplasm with well defined regions
CORRECT OPTION: a
3
The natural tendency of organisms as they evolve is to
A
decrease in size
B
increase in number
C
develop specialize structure
D
feed indiscriminately
CORRECT OPTION: c
4
In snails, the hard calcareous shells are secreted by the
A
radula
B
ctenidium
C
pneumostome
D
mantle
CORRECT OPTION: d
5
The structure labelled I is formed as a result of the fusion of
A
two pairs of nuclei
B
several pairs of nuclei
C
a pair of nuclei
D
two pairs of nucleoli
CORRECT OPTION: b
6
The special name of the part labelled II is
A
gametangium
B
hypha
C
suspensor
D
zygospore
CORRECT OPTION: b
7
The ability of the cockroach to live in cracks and crevices is enhanced by the possession of
A
wings and segmented body
B
compound eyes
C
claws on the leg
D
dorso-ventrally flattened body
CORRECT OPTION: d
8
The caste of termites that lacks pigmentation is the
A
King
B
worker
C
soldier
D
queen
CORRECT OPTION: b
9
The structure that prevents food particle from escaping through the fish gills are called gill
A
arches
B
filaments
C
rakers
D
lamellae
CORRECT OPTION: c
10
A distinguished feature of mammals is the possession of
A
skin
B
scale
C
nail
D
hair
CORRECT OPTION: d
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