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NABTEB GCE Agricultural Science Practical Expo Answer – Nov/Dec 2017

 

Verified NABTEB GCE Agric Practical Expo
NABTEB GCE 2017 Nov/Dec Agricultural Science Practical Answer and Solution to the questions.

2017 NABTEB AGRIC SCIENCE PRACTICAL SOLUTION

1a)
determination of the rate capillarity of different soil samples capillary

OR

Experiment to compare capillary action of soil types
========================

1b)
A= test tube
B=cotton wool
C=Water
D= Beaker

(1c)

i)Get the three different soil samples ie clay,loamy and Sandy soil

ii)get three set of capillary tubes

iii)plug cotton wool at the each end of the tubes

iv)fill 3 beaker with water and insert the capillary tubes which are already filled with soil sample with the plugged end at the base

v)make note of the levels of the water as it rises in the tubes.

ix)The clay soil has the highest capillarity with Sandy soil with the lowest capillarity
==========================
*(1d)*
i)the soil labelled III has the highest humus content
ii)it is very dark in color
iii)it has the highest level of fertility

(1e)
– Test tube III

______________________________

2a)
A= ranging rod
B= marking pin

2b)
i)red
ii)white

2c)
The equipment are used for surveying purposes

2d)
It can be used for marking or indicating a particular point on a Land

2e)
i)theodolite
ii)measuring tape
iii)Plane table
iv)surveyor’s chains
iv)graphometer

2f)
i)By cleaning after use
ii)By keeping it in a cool dry place.

______________________________
3a)
i)cassava tubers peeled, washed and grated or crushed into a mash
ii)the mash is being place in a porous bag and compressed for 1-3 hours to remove excess starchy water.
iii)the dried mash is then sieved
iv)the seived mash is then fried
v)the fried mash is allowed to be aired
ix)it results into garri

3b)

i)whitefly
ii)mealybugs

3c)

i)bacterial blight
ii)cassava mosaic

3d)

i)staking avoids rotting of leaves
ii)it give room for plants to grow upwards rather than creeping which enhances Photosynthesis
iii)it avoid overcrowding among crops

3e)
i)tuber cutting ie use of yam setts
ii)stem cutting

______________________________
4a)
i)Egg Candler
ii)water trough
iii)feeding trough

4b
-i) To test the hatchability of eggs
-ii)To provide livestock with water
-iii)To provide feed to livestock

4c)
Choose Two

i)Eggs are liable to break easily
ii)Candling between the age of 11 and 14 days of incubation
iii)Interrups the movement of Embryo to the length axis of the egg

4d)
i)Switch on the equipment to produced rays of light
ii)Place the egg on top of the case so that rays of lights pass through the egg
iii)Separate healthy egg from unhealthy ones

4e)
i)it is not easy to maintain
ii) it increases cost of production
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THIS POST:By: in NABTEB GCE9:49 pm
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