NABTEB GCE 2019 Agricultural Practical Answer Now Available

*2019 NABTEB GCE O’LEVEL*

*AGRICULTURAL SCIENCE{ALTERNATIVE TO PRACTICAL SOLUTION}*

*INSTRUCTION: YOU ARE TOLD TO ATTEND ALL QUESTIONS*

*QUESTION 1✅*
*QUESTION 2✅*
*QUESTION 3✅*
*QUESTION 4✅*

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Yes
*{NUMBER 1}*

(1a)
Tractor

(1b)
*[Choose Any Five]*
(i)Tractor can carry many farm implement or it can be used in operating other farm implement.
(ii)Tractor is faster than man labour when used in land preparation and weeding.
(iii)Use of tractor enables farmers to increase their scale of production.
(iv)Tractor can be operated at all times and in all weather conditions.
(v)Use of tractor reduce fatigue or druggery in agriculture.
(vi)Use of tractor encourage establishment of commercial agriculture by farmers.
(vii)Tractor Can work for a long time without becoming worn out or tired unlike man and work animal.

(1c)
*[Choose Any Four]*
(i)check radiator water level daily and top it when necessary to the appropriate level
(ii)check oil level in the engine with the dip stick daily and top it when necessary to the required level
(iii)keep the tractor clean by removing all trashes or mud from it at the start or at the end of operation
(iv)check electrolyte of battery every day and top when necessary
(v)check tyre pressures daily before operation
(vii)inspect the tractor daily and tight loose bolts and nut before starting

(1di)
The type of fuel needed to operate the tractor is diesel fuel or petrol.

(1dii)
Tractor with diesel engines do not use or require spark plugs but injectors while petrol tractors require the use of spark plugs.

(1diii)
*[Choose Any Three]*
(i)The tractor should be serviced at regular interval.
(ii)Ensure that nuts,screws or shield are checked and tightened at regular interval.
(iii)Replace worn-out or weld broken parts of the tractor.
(iv)Worn-out tyres should be replaced and tyre pressure guaged regularly.
(v)Fuel injectors should be serviced or changed when necessary.
(vi)parts like the linkages, steering and other movable parts should be greased occasionally.
(vii)Air filter should be cleared when necessary.
(Viii)Employ a compotent and experienced tractor operator.

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*(NUMBER 2)*

(2a)
The aim of the experiment is to compare the porosity of the soils and water retention or water holding capacity of different soil types.

(2b)
A-Funnel
B-water
C-cotton wool
D-measuring cylinder
E-Drained water

(2c)
(i)The water in I is highest, followed by II and lastly by III.
(ii)it shows that diagram I contains the sample that has the highest porosity followed by II and finally by III.
(iii)It shows that I has the lowest water holding capacity, followed by II and III.

(2d)
Amount of water poured into funnels =80ml
Soil sample =(80 – 44) ml=36ml
Percentage of dry sample =
36/80 × 100/1
=45%

(2e)
Loamy soil
*[Choose Any Two]*
(i)it is well aerated and it can hold water
(ii)it is very rich in plant nutrients
(iii)it can easily be worked on or cultivated
(iv) it does not support erosion,waterlogging and it contain lots of organic matter(humus)

_____________________________________

*(NUMBER 3)*

(3a)
I-Male(inflorescence)
II-style
III-cob
IV-Leaf with parallel vein
V-stem

(3b)
maize is propagated by seeds. The maize seeds can be planted manually by stick or cutlass or mechanical by planter

(3c)
(i)Reaping
(ii)Drying
(iii)Grinding
(iv)cooking

(3d)
Sickle or Corn picker by combined harvester

(3e)
(i)Corn smut disease
(ii)leaf Spot disease

(3e)
(1)Corn smut disease:
*(Choose Any One)*
(i)Destroy diseased pants
(iii) Treat seeds before planting

(2)Leafspot disease:
*(Choose Any One)*
(i)Use resistant varieties
(ii)Apply the appropriate fungicide.
_____________________________________

*( NUMBER 4)*

(4a)
Cow head

(4b)
A-horn
B-ear
C-eye
D-Nostril

(4ci)
(i)Rabbit
(ii)pig
(iii)Fowl

(4cii)
(i)sheep
(ii)Gazelle

(4ciii)
(i)Bull
(ii)Goat

(4d)
*(Choose Any Three)*
(i)Problems of space when transporting the animals.
(ii)Animals may injure one another with the horns
(iv)Animals may use horns to destroy buildings and other farm structures.
(v)Animals with horns bully their young ones and those without horns.
(vi)Requires larger housing space and more pens spaces.

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