2003 - JAMB Biology Past Questions and Answers - page 4
31
The most effective method of dealing with non-biodegradable pollutant is by
A
Dumping
B
Recycling
C
Incineration
D
Burying
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32
The correct sequence of biomes from northern to southern Nigeria is
A
Guinea savanna → sudan savanna → tropical rain forest → sahel savanna → estuarine
B
Estuarine → tropical rain forest → guinea savanna → sahel savanna
C
Sahel savanna → tropical rain forest → estuarine → guinea savanna
D
Sahel savanna → sudan savanna → guinea savanna → tropical rain forest → estuarine
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33
Mycorriza is an associationn between fungi and
A
protozoans
B
Roots of higher plants
C
Bacteria
D
Filamentous algae
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34
A limited factor in a plant population near a chemical factory is likely to be
A
Light
B
Humidity
C
wind
D
pH
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35
Soil fertility can best be conserved by the activities of
A
Earthworm
B
Man
C
Rodent
D
Microbes
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36
The pioneer organisms in ecological succession are usually the
A
mosses
B
ilohens
C
ferns
D
algae
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37
If a DNA strand has a base sequence TCA, its complementary strand must be
A
ATG
B
TAG
C
GAT
D
AGT
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38
A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is
A
75%
B
50%
C
25%
D
100%
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39
If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by
A
XbYB
B
XBXB
C
XBY
D
XBbXb
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40
An organism that has been extensively used to test the chromosomes theory of heredity is
A
Drosophila melanogaster
B
Muscar domestica
C
Zea mays
D
Homo sapiens
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