Neco Gce 2016 Agric Science Practical Answers – Nov/Dec Expo

(1a)
A- THEODOLITE
B- CROSS STAFF
C- GUNTERS CHAIN
D- RANGING POLE

(1b)
A- USED FOR MEASURING HORIZONTAL OR VERTICAL ANGLE OR PLANE
B- UNKNOWN
C- USED FOR TAKING SHORT OR DETAIL MEASUREMENT OF LENGTH
D- IT IS USED FOR PROPER VISIBILITY FROM FAR DISTANCE

(1e)
(i) ALL INSTRUMENT SHOULD BE CLEAN AFTER USE
(ii) THEY SHLD BE KEPT IN A COOL DRY PLACE
(iii) KEEP AWAY FROM SUN AND RAIN
(iv) REPLACE WORN OUT PART WHEN THEY NEEDED (v) MATERIAL SHOULD BE HANDLE BY SURVEYOR ENGINEER IN THE RIGHTFUL WAY
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(2a)
i – silica dish
ii – humus
iii –
iv – trixd stand
v – Bunsen burner

(2b)
To fine the water content of the soil

(2c)
(i)weight the silica dish empty
(ii)put a small quantity of soil in the dish
(iii)place the dish on the oven
(iv)cool the dish and weight

(2d)
(i) 150 – 120 = 30g
(ii) 30/150 *100 = 20%
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3a)
F- aphid
G- beetle

3b)
F- piercing and sucking
G- Boring ( biting and chewing)

3c)
F feed on cell sap of plant while G feeds and destroy crops produce ( e.g yam)

3d)
F- use of insecticide
G- adequate and proper storage

3e)
i)egg
ii)larva
iii)pupa
iv)adult

3f)
i) it destroy crop seedlings
ii)it constitute nuisance in farm land
iii)it reduce crop yield
iv) it reduce crop quality yield
v) it reduce crop quality
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4a)
H-Horn
I-Femur
J-Tail

4b)
H
-it is used for making dishes
-it is used as food activities
I
-it is used for making bone meal
-it can be used for making gelating
J
-it is a source of food
-it is used for decoration

4c)
i)cow
ii)goat
iii)ram

4d)
dehorning

4e)
i)drying
ii)burning
iii)grinding
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