Study and practice Agricultural Science past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Which of the following factors does not affect the distribution of pasture grasses?
Atype of species
Btemperature
Csoil
Dpests and diseases
Erainfall
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Question 22
waec1991
If the ginning percentage of the samaru variety of cotton is 35, what will be the amount of raw cotton obtained from a 6 hectare farm with a yield of 330 kg seed cotton per hectare?
A46 kg
B96.3 kg
C114 kg
D693 kg
E6930 kg
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Question 23
waec1991
Most crop plants do not survive in water-logged soils because
Athe dissolved nutrients are too diluted for crop plants
Bthe plants will not photosynthesize
Ctheir leaves are turgid for respiration
Dtheir physiological processes will be increased
Eoxygen has been displaced to its deficiency for crops
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Question 24
waec1991
Plant micro-nutrients include the following except
Asulphur
Bcopper
Ciron
Dzinc
Echlorine
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Question 25
waec1991
Which of the following factors does not bring about soil formation?
Aclimate
Btime
Cparent material
Dsunshine
Etopography
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Question 26
waec1991
A soil with particles of less than 0.002mm in diameter is referred to as
Aclay
Bsilt
Csand
Dgravel
Ehumus
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Question 27
waec1991
Fertilizers that usually contain one nutrient which can be used directly by plants are commonly called
Aorganic fertilizers
Bmixed fertilizers
Cinorganic fertilizers
Dcompound fertilizers
Estraight fertilizers
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Question 28
waec1991
The different types of soil are determined by the relative amounts of each of the following components except
Arocks
Bair
Cwater
Dminerals
Eorganic matter
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Question 29
waec1991
Which of the following does not occur as a result of poor drained soil?
Amottling near the top
Bdecrease in rooting depth
Cchange in colour of the subsoil
Ddecrease in organic matter content
Eincrease in oxygen level of the soil
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Question 30
waec1991
What happens to the nitrogen and sulphur contents of vegetation when burning is used as a means of lans clearing? They
Aare released by burning and lost as gases
Bremain in ash as nitrates and sulphates
Craise the PH of an acid soil
Dare released into the soil thus increasing the nutrients of the soil
Eactivate the soil microbes afetr burning
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Question 31
waec1991
the nutrient content of soil may be influenced by the following except
Aharrowing
Btopography
Ccropping
Dfallowing
Egrazing
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Question 32
waec1991
The most important soil micro-organisms concerned with decay and nutrients-recycling are
