Waec 2019 Agriculture Science 3(practical 1st set) Answers

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AGRIC. SCIENCE PRACTICAL SPECIMEN:

Specimen A – Rake
Specimen B – Shears
Specimen C – Shovel
Specimen D – Cutlass
Specimen E – Whelbarrow
Specimen F – Clay soil
Specimen G – Loamy soil
Specimen H – Sandy soil
Specimen I – Earthworm
Specimen J – Onion
Specimen K – Tomato
Specimen L – Carrot
Specimen M – Amaranthus
Specimen N – Okro
Specimen O – Spinach
Specimen P – Dried animal blood(labelled)
Specimen Q – Bone meal(labelled)
Specimen R – Rice bran
Specimen S – Catfish

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(1a)
Specimen A - RAKES
(i) It is use for clearing and gardening tasks.
(ii) It is for agriculture and landscaping
(iii) It is use to collect leaves, hay, grass, in fram land

SPECIMENS C - SHOVEL
(i) It is use to transfer soil from one place to another.
(ii) It is use to garden parts and also to remove stone and rubbish.
(iii) It is use for digging, lifting, and moving bulk materials, such as soil, coal, etc.

SPECIMEN D - CUTLASS
(i) It is use for pre-planting activities such as the cutting down and clearing of grasses, bushes and trees. 
(ii) It is used for planting seeds of some crops.
(iii) It is use for harvesting some crops.

(1b)
SPECIMEN E 
Wheelbarrow is a small hand-propelled vehicle, usually with just one wheel, designed to be pushed and guided by a single person using two handles at the rear, or by a sail to push the ancient wheelbarrow by wind.

(1c)
(i) Wash after use
(ii) Grease the wheel join 
(iii) Tighten bolts and nut on the wheel properly


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(2a)
Under F:
(i) It is fine grained
(ii) F is clay
(iii) Holds water very well
(iv) Forms roll and ring convieniently

Under G:
(i) It is moderately grained
(ii) F is Loamy
(iii) Moderate water retention
(iv) Weakly forms a roll

Under H:
(i) It is coarse grained
(ii) F is Sandy
(iii) Low water retention
(iv) Cannot form a roll and ring convieniently

(2b)
(i) potatoes
(ii) carrots

(2ci)
SPECIMEN G 

(2cii)
(i)contained decayed matter
(ii)the lumps are finable 
(iii)it well aerated 

(2d)
(i)it helps in moung the soil
(ii)it add humus to the soil
(iii)help the soil to be well aerated due to growing.


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3)




(3a) 
J = Leaf vegetable and bulb. 
K = Fruit and leaf vegetable. 
L = fruit and root.
M = Leaf vegetable.
N = Fruit and Leaf vegetable. 
O = Leaf vegetable.

(3b) 
(i) Crop rotation.
(ii) Tillage. 
(iii) Pest management. 
(iv) Irrigation. 
(v) Soil fertilization. 

(3c) 
(i) They are source of income. 
(ii) To make food available for the family. 
(iii) To improve the environmental health. 
(iv) For research purposes.


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(4a)
Specicmen Q: 
(i) Calcium

Specimen S: 
(i) Carbohydrates
(ii) Lipids (fats and oil)

(4b) 
CARBOHYDRATES:
(i) Providing energy.
(ii) Breakdown of fatty acids and preventing ketosis.
(iii) regulation of blood glucose

LIPIDS:
(i) For storing energy
(ii) For signaling
(iii) It act as structural components of cell membranes

(4c)
(i)cow
(ii)pork
(iii)sheep 
(4d)

(4d)
(i) It may lead to transmission of diseases
(ii) It can leads to animal mortalility if misused
(iii) It decreases productivity rate

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