Question 1 of 20 2,054 total questions
In the nitrogen cycle, nitrite is oxidized to nitrate by
A nitrobacter
B nitrosomonas
C azotobacter
D rhizobium
Leguminous cover crops do not
A bind the soil particles together through their roots
B increaes the nitrogen content of soils
C aid in improving the soil organic matter content
D reduce the soil microbial population
A disadvantage of using organic manure on the soil is that
A it decreases the potassuim content of the soil
B diseases spread fast
C it increases the humus content of the soil
D it reduces the rate of soil water evaporation
Which of the following processes will not lead to the loss of nutrients from the soil?
A erosion
B mulching
C harvesting
D leaching
Which of the following soil water is tightly held to the surface of soil particles?
A hygroscopic water
B gravitational water
C capillary water
D superfluous water
The most important soil micro-organism causing decay and nutrient recycling are
A bacteria and fungi
B fungi and algae
C algae and actinomycetes
D bacteria and algae
What is the percentage porosity of a soil sample whose volume is 250cm when the volume of air is 200cm?
Clay particles are able to attract cations in the soil because they
A are positively charged
B have excess negative charges
C are sticky
D can be moulded
Igneous rocks formed within the crust are called
A guartzite
B volcanic
C plutonic
D stratified
The use of land for agriculture is not influenced by
A labour
B climate
C topography
D population
The land tenure system that results in fragmentation of land is
A freehold
B government tenancy
C inheritance
D leasehold
Which of the following land tenure systems encourages the establishment of permanent crops?
A freehold system
B tenancy
C leasedhold system
D pledging
One factor which differentiates a subsistence from a commercial farmer is that the former produces
A for the benefit of his community
B only one type of crop
C for the benefit of his family
D raw materials for agro-based industries
The best method of introducing a new pesticide to rural farmers is through
A farmers co-operatives
B circular letters
C demonstration
D field trips
The activities of middlemen may cause the following problems except
A reducing the profit margin of farmers
B artificial scarcity of produce
C inflation of prices
D inadequate storage facilities
Farm records are important for the following reasons except
A supplying information for future planning
B determining profit and loss made on the farm
C assessing the quality of farm produce
D determining the credit worthiness of farmers
The major advantage of inbreeding in animals is that it
A increases hybrid vigour
B increases multiple births
C eliminates undesirable traits
D reduces the number of meals needed in a herd
The resulting calf from crossing white fulani with a muturu cow is a
A kuri
B keteku
C ndama
D bororo
Fish products include the following except
A fish meal
B fish silage
C oil
D leather
Coccidiosis can be treated with
A sulphamethazine
B iodised salt
C piperazine citrate
D ferrous oxide
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