2005 - JAMB Biology Past Questions and Answers - page 5

41
The importance of practising crop rotation in agriculture is to
A
maintain soil fertility
B
improve the nutritional value of crops
C
control soil erosion
D
ensure the growth of crops
correct option: a
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42
The recycling method of solid waste disposal is unsuitable for
A
organic matter
B
glass
C
plastic
D
metal scraps
correct option: a
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43
A non - renewable alternative source of energy is
A
wind generator
B
solar panels
C
nuclear energy
D
hydroelectric power
correct option: c
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44
Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents
A
The father possesses a gene for shortness
B
The mother posesses a gene for shortness
C
Nature makes the child short
D
Both parents possess gene for shortness
correct option: d
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45
A yellow maize is crossed with a white maize and the first filial generation produce yellow maize only. The white trait is said to exhibit
A
dominance
B
recessiveness
C
codominance
D
incomplete dominance
correct option: b
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46
The association in which one member benefits and the other is relatively unaffected by the interaction is termed
A
symbiosis
B
parasitism
C
commensalism
D
mutualism
correct option: c
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47
When a peacock displays its colourful feathers, it is
A
ready for a fight
B
protecting itself from predators
C
protecting its mate from predators
D
courting a female
correct option: d
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48
When an animal has a dark-coloured dorsal surface and a light-colouration ventral surface, this is an adaptation called
A
concealment colouration
B
countershading
C
colour blending
D
disruptive colouration
correct option: b
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49
The only caste in the termite colony are the members can feed themselves are the
A
reproductives
B
workers
C
nymphs
D
soldiers
correct option: b
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50
An evidence of a common ancestral for fishes, amphibians, reptiles, birds and mammals is the
A
possession of wings by birds and bats
B
cold-bloodedness of fishes, amphibians and reptile
C
presence of gilll clefts in vertebrate embryos
D
possession of scale by fish and reptiles
correct option: c
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