The WAEC Biology Practical (Paper 3) is worth 80 marks. Preparing for the practical exam requires you to be familiar with the types of specimens WAEC commonly uses. While the exact specimens vary each year, WAEC draws from a consistent pool. Categories of Specimens Category 1: Animal Specimens SpecimenKey Features to KnowCommon QuestionsCockroachThree body regions, three pairs of legs, two pairs of wings, antennae, compound eyesExternal features, classification (Insecta), economic importance (pest)Tilapia fishScales, fins (dorsal, caudal, pectoral, pelvic, anal), operculum, lateral line, streamlined bodyAdaptations to aquatic life, function of finsToad/FrogMoist skin, hind limbs longer than forelimbs, no tail, webbed feetAdaptations, metamorphosis, differences between toad and frogEarthwormSegmented body, clitellum, setae, no legsHabitat, economic importance (soil aeration), classificationSnailShell, muscular foot, tentacles (2 pairs), mantleClassification (Gastropoda), habitat, locomotionCatfishBarbels, no scales, flattened head, smooth skinComparison with tilapia, adaptationsDomestic fowl eggShell, shell membrane, albumen, yolk, chalaza, air space, germinal discFunctions of each part, comparison of raw vs boiledBean weevilSmall, dark brown, hard exoskeleton, bore holes in seedsParasitism with bean seed, economic importance (post-harvest pest)LizardDry scaly skin, clawed digits, long tailAdaptations to terrestrial life, comparison with toad Category 2: Plant Specimens SpecimenKey Features to KnowCommon QuestionsBean seedTwo cotyledons, testa, hilum, micropyle, plumule, radicleGermination, classification (Dicot), comparison with maizeMaize grainOne cotyledon (scutellum), endosperm, pericarp fused with testaClassification (Monocot), comparison with beanHibiscus flowerSepals, petals, stamens (many), pistil (stigma, style, ovary)Pollination type, agents, flower parts and functionsCassava tuberSwollen root, starchy, brown outer skinStorage organ, economic importance, vegetative propagationMango leafSimple, broad, net venation, entire marginClassification (Dicot), function of leafMaize leaf/Guinea grassLong, narrow, parallel venationClassification (Monocot), comparison with dicot leafOrange fruitThick rind, segments, juicy pulp, seedsFruit type (hesperidium), dispersal (animals)GroundnutPod, seeds insideFruit type (legume), classification, nitrogen fixationCoconutHard shell, fibrous husk, liquid endospermDispersal by water, structure Category 3: Other Specimens SpecimenPurposeSoil samples (sandy, loamy, clay)Water retention experiment, drainage comparisonHumus (dry and moist)Organic matter content, importance for soil fertilityMicroscopeParts identification, magnification calculationFood samples (yam, egg, groundnut)Food tests for starch, protein, fat How to Prepare for Each Specimen For EVERY specimen, make sure you can: Identify it by its common name and scientific classification Draw and label its external features (following diagram rules) State its habitat and feeding habit (for animals) Describe its economic importance to humans Compare it with a related specimen (e.g., bean vs maize, tilapia vs catfish) Classify it to at least the class or phylum level WAEC Biology Practical Question Format WAEC typically presents 3–4 practical questions, each with sub-parts. The format usually includes: Question 1: Identify two related specimens, compare their features, and classify them. Question 2: Draw and label a specimen. State its habitat, feeding method, and economic importance. Question 3: Perform or interpret food tests. Record results in a table. Question 4: Describe an ecological relationship between two specimens. Practice Activity Choose any 5 specimens from the lists above. For each one: Draw and label it (following the 8 rules) Write 3 observable features State its classification State its economic importance If you can do this for all specimens on the list, you are fully prepared for Paper 3. Video Specimen Guides Watch detailed specimen identification and drawing guides at NaijaBiologyTips. 👉 Access practical preparation at NaijaBiologyTips.site
