This page contains the WAEC 2026 Biology 3 Practical questions and answers. Scroll down for the official question paper images and full answers.

WAEC 2026 Biology 3 Practical Question Paper

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WAEC 2026 Biology 3 Practical — Answers ✅

NUMBER ONE

1(a) Food Test Table

TEST	OBSERVATION	INFERENCE
(i) Filter paper / light test	No blue-black coloration; remains brown/yellow	Starch is absent
(ii) Biuret test (NaOH + CuSO₄)	Purple/violet coloration appears	Protein is present
(iii) Filter paper / light test	Translucent/greasy spot visible on filter paper	Fat/oil is present

1(b) Nutritional Importance of Specimen A to a Growing Child

1. It is rich in protein needed for growth and tissue repair
2. It contains fats/oils which provide energy for metabolic activities
3. It is a good source of minerals (e.g. calcium, phosphorus) for bone development
4. It contains vitamins essential for healthy development
5. It provides energy needed for the child’s physical activities

1(c)(i) Type of Fruit

Legume/Pod (a dry dehiscent fruit)

1(c)(ii) How the Fruit Develops

It develops from a single carpel and splits along two sides (sutures) when ripe to release seeds.

1(d) Diagram — Coming Soon

Diagram will be updated shortly.

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NUMBER TWO

2(a)(i) Processes Illustrated

1. Digestion
2. Peristalsis

2(a)(ii) Parts of the Alimentary Canal Where Each Process Occurs

1. Digestion — Stomach
2. Peristalsis — Oesophagus

2(b) Structural Adaptations of Specimen F (Stomach)

1. Thick muscular walls for churning food
2. Presence of gastric glands for secretion of digestive juices

2(c) Enzymes Secreted by Specimen F (Stomach)

1. Pepsin
2. Rennin (or Gastric lipase)

2(e)(i) Type of Relationship

Parasitism

2(e)(ii) How the Relationship is Exhibited

The mistletoe obtains water and nutrients from the host plant while the host is harmed.

2(e)(iii) Structural Adaptation of Specimen G (Mistletoe)

Possession of haustoria (sucking roots) that penetrate the host tissues and absorb nutrients.

2(e)(iv) Effects on the Host Plant

1. Reduces growth and vigour of the host twig/branch
2. May cause drying, weakening or death of the infected branch

2(e)(v) Another Example of this Type of Relationship

Dodder (Cuscuta) growing on another plant.

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