1998 - JAMB Biology Past Questions and Answers - page 5
41
The correct increasing order of size for the cell components responsible for heredity is
A
chromosome → DNA → nucleus → gene
B
DNA → gene → chromosome → nucleus
C
chromosome → nucleus → DNA → gene
D
DNA → gene → nucleus → chromosome
42
A sex-linked character cannot be passed on directly from
A
father to son
B
mother to daughter
C
mother to son
D
father to daughter
43
The biological association that contributes directly to succession in a community is
A
competition
B
predation
C
parasitism
D
commensalism
44
The group of insects that have mouth parts adapted for both piercing and sucking is
A
cockroach, aphids and mosquitoes
B
aphids, houseflies and moths
C
mosquitoes, tse-tse flies and aphids
D
aphids, beetles and grasshoppers
45
A
I
B
II
C
III
D
IV
46
A
I
B
II
C
III
D
IV
47
In the honey bee colony, the drones are
A
sterile males with reduced mouth parts
B
sterile males with well-developed mouth parts
C
fertile males with reduced mouth parts
D
fertile males with well-developed mouth parts
48
In the whistling pine, leaves are reduced to brown scales and young stems are green. This is an adaptation for
A
obtaining food
B
conserving nutrients
C
storing water
D
reducing transpiration
49
The best explanation for the theories of natural selection is that
A
all organisms have equal capacity for survival in their habitats
B
organisms have varying capacities for survival in their habitats
C
organisms compete for resource and better competitors survive and thrive
D
habitats allow only organisms that will not have to compete for survival
50
The basic point of impact by changes which produce mutation is the
A
gametes
B
chromosomes
C
phenotype
D
zygote
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