Begin the lesson by discussing the various visible parts of a plant such as roots, stems, and leaves. Engage students by asking them to share any plants they have at home or in their community.

Use the video 'Parts of a Plants – Roots, Stems and Leaves' to explain the main parts of a plant and their functions. This video provides a clear visual representation of how each part contributes to the plant's survival.

Explain the role of flowers in attracting pollinators and the importance of thorns as plant defenses.

Watch the video 'Root Functions' to explore how roots absorb water and nutrients, anchoring plants in the soil. This video helps students understand the critical role roots play in plant survival.

Discuss with students how the loss or malfunction of a plant part can affect the overall health and survival of the plant.

Conduct a hands-on activity where students observe and draw the external structures of weeds. This activity encourages critical thinking by analyzing how these structures help the plant survive.

Assign the assessment 'Do Plants Need Roots?' where students investigate the importance of roots by conducting an experiment. This activity reinforces their understanding of root functions.

Facilitate a class discussion to check students' understanding of plant structures and their functions. Encourage students to ask questions and share their observations from the hands-on activities.

Use the video 'All About Plants' to review the diversity and adaptability of plants. This video supports understanding by illustrating how plants thrive in different environments.

Conclude the lesson with the 'Review – Plant Structures and Functions' assessment to evaluate students' comprehension of plant structures and their roles.