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WAEC AGRICULTURAL SCIENCE PRACTICAL ANSWERS
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(1a)
(Pick any two)
(i) temperature
(ii) moisture
(iii) texture
(iv) pH
(1b)
(i) Helps to improve soil structure and granulation.
(ii) They help to also improve the aeration of the soil.
(iii) They help to decompose organic materials in the soil to form humus.
(iv) They improve soil water percolation or drainage.
(v) They also increase the collocidal properties of the soil
(1c)
(i) it attack crops
(ii) it affect the quality of crops
(iii) it reduce the market value of crops
(iv) it Discourage farmers from cultivation
(1d)
(i) it is high in soil nutrients
(ii) it is rich in humus
(iii) it makes crop to germinate properly
(iv) it is rich in soil organism
OR
(1a)
(PICK ANY TWO)
(i) Soil moisture
(ii) Temperature
(iii) Organic matter
(iv) Soil pH
(v) Soil Texture
(vii) Oxygen levels
(1b)
(PICK ANY FIVE)
(i) Specimen A creates burrows as it moves through the soil, which enhances soil aeration
(ii) It consumes decaying plant material and aids in the soil decomposition process.
(iii) It burrows through the soil, creating channels that improve soil structure.
(iv) Its burrows act as pathways for water movement through the soil.
(v) It consumes organic matter in the soil, breaking it down into smaller particles.
(vi) It produces a sticky substance called mucilage, which helps bind soil particles together, forming aggregates or clumps.
(vii) Its activity can influence soil pH.
(viii) It promotes the growth and activity of beneficial soil microorganisms.
(ix) The presence of specimen A in the soil, contribute to higher plant productivity.
(1c)
(PICK ANY FOUR)
(i) Its activity resuts to crop damage
(ii) Its extensive tunneling systems underground, which can destabilize the soil structure leads to soil erosion
(iii) It can disrupt nutrient cycling in the soil.
(iv) They can target young seedlings causing damage to the seedling
(iv) The infestation of specimen B can weaken the overall health and vitality of plants.
(v) They increased soil vulnerability to drought.
(vi) Their activity can lead to economic loss.
(vii) It can cause decrease in plant productivity.
(1d)
(PICK ANY FOUR)
(i) Specimen C has good drainage
(ii)) It has the ability to retain and release nutrients effectively.
(iii) It has good water retention capacity
(iv) It provides adequate aeration
(v) The balanced texture of specimen C provides an ideal environment for root development and penetration
(vi) Specimen C is known for its workability and ease of cultivation
(vii) It can maintain its fertility and productivity over the long term
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2a)
E – Keep livestock or animal water clean and within reach.
F – Used for feeding farm animals with grains & Silage.
G – Used mostly during or before incubation to determine fertility of eggs
H – for fish Sampling / Sorting /grading in farm.
(2b)
Specimen E:
(a) Made up of plastic/concrete clay or galvanised metal
(b) Smooth Surface for easy cleaning
Specimen F:
(a) usually wooden, metal or some times plastic
(b) Rust and Corrosion resistant
Specimen G:
(a) Strong electric bulb Covered by a plastic
(b) Solid usually Cylindrical mass of tallow
Specimen H:
(a) Long handle
(b) Consist of a bag of mesh material attached to a frame to hold the bag open.
(2c)
(i) Fishing basket
(ii) Gill net
(iii) Siene net
(iv) Fishing Spear / Harpoon
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(За)
I: Saccharum officinarum
J: Ananas comosus
K: Zingiber Officinale
(3b)
I: Cutting of its stalk.
J: Suckers
K: rootstalk.
(3c)
I
(i) It is used industrially in making rum
(ii) It can be used in making Charcoal
J:
(i) It is used in making fruit juice
(ii) It Create employment opportunity through selling
(3di)
(i) The apis bee
(3dii)
(i) Nectar
(ii) Bee bread
(iii) Bee venom
(iv) propolis
(v) pollen
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(4a)
N – it is used as bedding materials
Q – it is used to provide required heat in the poultry house
(4b)
(i) Sawdust
(ii) Chopped straw
(iii) Processed paper
(4c)
(i) it does not harm livestock
(ii) it can be easily evacuated
(4d)
(i) it causes heat stress and as a result chicks will move away
(ii) it affects their incubation and as a result, they move closer to it
(4e)
(i) it supplied the requirement
(ii) it aids brooding
(iii) it is used for cooking
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