WAEC Likely 2027 — Biology questions

50 likely Biology questions for the 2027 WAEC examination, written from the official syllabus and recurring past-question patterns, each with the correct answer and a short explanation. The first 6 are free to read — full access (₦2,990 once) unlocks all 50.

Unlock all 50 for ₦2,990 Practise Biology in CBT mode Biology syllabus

1. During the fermentation of palm sap by yeast, sugar is converted mainly into

Respiration

2. A peeled yam strip placed in distilled water becomes firm because

Movement of Substances Across Cell Membranes

3. Which sequence shows increasing complexity of organization in a multicellular organism?

Levels of Biological Organization

4. Which feature distinguishes insects from arachnids?

Classification of Living Organisms

5. A destarched potted plant has part of a leaf covered on both surfaces with opaque black paper before exposure to sunlight. After testing the leaf with iodine solution, only the uncovered part turns blue-black. What does this demonstrate?

Photosynthesis

6. A maize plant grown in a nutrient solution lacking magnesium is likely to develop yellow leaves because magnesium is required for

Mineral Nutrition in Plants

These are AI predictions for revision, not leaked or official exam questions.