WAEC GCE 2024 Agricultural Science Practical Question And Answer Now Available

WAEC AGRIC PRACTICAL

NUMBER ONE

(1ai)
A – Platy
B – Blocky
C – Granular
D – Prismatic

(1aii)
(PICK ANY TWO)
(i) Add organic matter (eg, compost or manure) to enhance soil aggregation and fertility.
(ii) Practice conservation tillage to avoid soil compaction and maintain structure.
(iii) Introduce cover crops to reduce erosion and improve soil health.
(iv) Apply gypsum to improve the structure of clay soils by breaking down compacted layers.

(1aiii)
(PICK ANY TWO)
(i) Enhances water infiltration and retention, ensuring sufficient water for plant roots.
(ii) Improves aeration, enabling root respiration and nutrient uptake.
(iii) Reduces soil erosion by holding soil particles together.
(iv) Facilitates root penetration, allowing plants to access deeper nutrients and water.

(1b)
Earthworm

(1bi)
(PICK ANY THREE)
(i) Soil pH (earthworms thrive in neutral to slightly alkaline soils).
(ii) Moisture levels (they require moist soil for survival).
(iii) Organic matter availability (as food source).
(iv) Soil temperature (extreme heat or cold can reduce their population).
(v) Use of chemical fertilizers or pesticides (can harm or kill earthworms).

(1biii)
(PICK ANY THREE)
(i) Enhances soil aeration through burrowing.
(ii) Increases soil fertility by breaking down organic matter into humus.
(iii) Improves water infiltration by creating tunnels in the soil.
(iv) Promotes nutrient cycling by digesting and excreting organic materials.
(v) Reduces soil compaction, creating better conditions for root growth.

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