WAEC GCE Agricultural
Science Practical Questions
1ai)
To determine the presence of microorganisms
in a soil sample
1aii)
Conical flask I : At the end of the Experiment ,
the lime water in Conical flask I will turn milky
Conical flask II : At the end of the experiment,
the lime water in Conical flask II will remain
clear
1aiii)
Fresh soil contains living organisms
1aiv)
-They improve soil structure
-They improve soil aeration
1b)This Experiment is Artificial Propagation by
Growth
1biii.
– pollination agent which can be fail to
perform successfully are not required
– the hazards of fertilizatiom are avoided
– the new plants mature fast because the
offspring tend to acquires the age of the
parent
– the offspring are true to types because there
is no mixture of hereditary characters.
1c)There is increase in photosynthesis
activities
DISADVANTAGES
-Leads to high evaporation content in plant.
2a-Solar Power(Sun)
2b
I)it is used in drying process
Ii)it can produce electricity
Iii)it is used in heating farm steads
2c
Advantages:
I)It is easily available
ii)It is a very neat source of power
iii)it is very useful in farm photosynthesis
Disadvantages
I)it is expensive to store and harness
ii)The energy from the sun can be erratic.its
not possible to control
it
iii)only available during the day
2d
I)Electrical power
II)Solar power
III)Mechanical power
Iv)Human power
V)Water power
3a)
I-comb
II-wattle
