| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Biology |
| Lesson Topic: State the role of phloem in transporting sucrose and amino acids between the leaves and other parts of the plant. |
Learning Objective/s:
- Describe the composition and function of phloem as a living transport tissue.
- Explain the pressure‑flow hypothesis that drives sucrose and amino‑acid movement.
- Identify source and sink organs in a plant and the direction of nutrient flow.
- Analyse how phloem transport supports growth, storage and seasonal redistribution.
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Materials Needed:
- Projector or interactive whiteboard
- PowerPoint slides with phloem diagram
- Handout summarising source‑sink table
- Model of a plant stem (or printable diagram)
- Sticky notes for quick formative check
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Introduction:
Begin with a quick question: “Where does the sugar produced in leaves go?” Connect to prior learning on photosynthesis and xylem. Explain that today’s success criteria are to describe phloem structure, outline the pressure‑flow mechanism, and identify source‑sink relationships.
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Lesson Structure:
- Do‑now (5’): Students label a blank source‑sink table on the handout.
- Mini‑lecture (10’): Present phloem anatomy and the pressure‑flow hypothesis using slides.
- Interactive diagram activity (10’): Groups place arrows on a stem diagram to show direction of flow.
- Concept check (5’): Quick quiz using sticky notes – students write one function of phloem.
- Application (10’): Case study – how phloem supplies a developing fruit; students discuss in pairs.
- Summary & exit ticket (5’): Students write a one‑sentence answer to the exam‑style prompt.
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Conclusion:
Recap the key steps of the pressure‑flow mechanism and the importance of source‑sink dynamics. Collect exit tickets to gauge understanding, and assign a short homework: complete a worksheet comparing phloem and xylem transport.
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