In which of the soil layer does most biological activity occur?
B - horizon
C - horizon
D - horizon
A - horizon
Correct answer is D
A - horizon is the top layer of the soil horizon, it contains decomposed organic matter which is necessary for plant growth and also microorganisms.
Legumes are different from grasses, because;
They have lesser protein content than grasses
They form symbiotic relationship with bacteria, rhizobian, in the nodules of their roofs
They are monocot plants
They do not bear seeds
Correct answer is B
Legumes form symbiotic relationship with bacteria, rhizobium in the nodules of their roots to manufacture nitrogen compounds, which in turn serve as protein in the legumes, and seed being part of their storage form.
Mechanical power is not usually required in?
Soil tillage
Fertilizer application
Staking of yams
Planting of seeds
Correct answer is C
No explanation has been provided for this answer.
All are factors to consider when planning a farmstead except?
Accessibility
Topography
Soil type
Irrigation
Correct answer is D
Farm stead is the house belonging to a farm and the buildings around it, since it is not used for planting or cultivation, irrigation is not a factor to consider.
Newcastle disease is viral diseases that affect which animals?
Poultry birds
Cattle
Goat
Fish
Correct answer is A
Newcastle disease is an infection of domestic poultry and other bird species with virulent Newcastle disease virus (NDV).