WAEC 2024 Agricultural Science Practical Questions And Answers
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WAEC 2024 Agricultural Science Practical Answers
WAEC AGRIC PRACTICAL
NUMBER ONE
(1a)
Specimen A is a long and slender instrument made of metal or wood, used in surveying and mapping tasks. It features clear markings or divisions along its length to aid in measuring distances or marking specific points on the ground. They are lightweight and portable, making them convenient for use in outdoor settings where precise measurements are required.
(1b)
SPECIMEN A:
(PICK ONLY ONLY)
(i) It is used to measure distances in the field accurately.
(ii) It helps in marking specific points for mapping purposes.
(iii) Acts as a visual indicator for surveying land.
(iv) Provides a reference point for taking measurements.
(v) Supports leveling instruments during land surveying.
(vi) Can be used in conjunction with a theodolite for angular measurements.
SPECIMEN B:
(PICK ONLY ONLY)
(i) Used for hunting animals for food.
(ii) Employed in archery for sports and competitions.
(iii) Historical significance in warfare and battles.
(iv) Symbolic representation in various cultures.
(v) Used in surveying to mark points in the field.
(vi) As a tool for signaling and communication over distances.
SPECIMEN C:
(PICK ONLY ONLY)
(i) Measures lengths accurately in agriculture and construction.
(ii) Helps in determining crop row spacing.
(iii) Facilitates precise measurement of field dimensions.
(iv) Assists in estimating crop yield per area.
(v) Essential for calculating application rates of fertilizers.
(vi) Used to measure heights of crops for growth monitoring.
SPECIMEN D:
(PICK ONLY ONLY)
(i) Marks boundaries for agricultural plots.
(ii) Secures anti-bird nets around crops.
(iii) Supports climbing plants for better growth.
(iv) Used for stretching string lines in field layout.
(v) Acts as a temporary fixture for holding irrigation pipes.
(vi) Helps in anchoring landscape fabric for weed suppression.
(1c)
Draw the diagram below
(1d)
A – Store in a dry place and clean after each use.
B – Store in a protective case when not in use to prevent damage.
C – Keep clean and avoid exposing to moisture to prevent rust.
D – Store in a cool and dry place to prevent warping or splitting.
NUMBER TWO
(2a)
The aim of the experiment is to determine the capillary rise of water in dry sand, dry clay, and dry loam.
(2b)
E: Least rise
F: Moderate rise
G: Highest rise
(2c)
(PICK TWO ONLY)
(i) The rise is influenced by soil type.
(ii) Loam has the highest capillary rise due to its texture.
(iii) Clay exhibits moderate capillary action.
(iv) Sand shows the least capillary rise.
(v) Soil particle size affects capillary action.
(vi) Water retention varies with soil composition.
(2d)
(PICK ONE ONLY)
(i) Prevents soil particles from escaping.
(ii) Acts as a barrier to maintain separation.
(iii) Facilitates water absorption evenly.
(iv) Maintains consistency in the experiment setup.
(v) Absorbs excess water to avoid spillage.
(2ei)
The soil in the capillary tube labelled E is best for agriculture.
(2eii)
(PICK TWO ONLY)
(i) Good drainage properties that prevent waterlogging and allow for proper aeration of plant roots.
(ii) High permeability that allows roots to easily penetrate the soil for nutrient uptake.
(iii) Low water retention which helps prevent root rot in plants.
(iv) Easy cultivation and good soil structure for root growth.
(v) Suitable for crops that require well-drained soil conditions.
(vi) Less prone to compaction, promoting healthy root development.
(2f)
Draw the diagram
(3a)
H: Chewing mouthparts.
J : Chewing mouthparts.
K: Piercing and sucking mouthparts.
(3b)
Effects of Specimen H on crop production:
(PICK ANY THREE)
(i) Damage to stored maize grains.
(ii) Reduction in grain quality and quantity.
(iii) Economic losses to farmers and storage facilities.
(iv) Risk of mycotoxin contamination due to fungal growth facilitated by weevil infestation.
(v) Decreased market value of infested maize.
Effects of Specimen J on crop production:
(PICK ANY THREE)
(i) Defoliation of plants
(ii) Reduction in crop yield
(iii) Damage to young seedlings
(iv) Increased plant susceptibility to diseases
(v) Decreased quality of harvested produce
(3c)
(PICK ANY THREE)
(i) Proper sanitation by keeping the store clean and free from spilled grains.
(ii) Regular inspection of stored maize for signs of infestation.
(iii) Use of hermetic storage methods such as airtight containers or bags to suffocate the weevils.
(iv) Application of chemical insecticides approved for grain storage, following recommended dosage and safety precautions.
(v) Employing physical control measures such as freezing or heating the infested maize to kill the weevils and their eggs.
(3d)
(PICK ANY THREE)
(i) Okra
(ii) Hibiscus
(iii) Eggplant
(iv) Bell peppers
(iv) Tomatoes
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