Science Lesson Plans: How Plants Grow. Objectives. . Plants grow from seeds. . Seeds sprout under the right conditions. . Parts of a seed and their functions for measuring length and volume, describe what plants need to grow, describe how plants respond to light and gravity, describe structures of plants, and explain . - How Do Potatoes Grow worksheet; Plant Survival worksheet; Snack sized sandwich bags fill with soil, 1 per student ; Half pint sized milk cartons empty, 1 per student ; Pencils; Newspaper; Lima bean seeds 1 Students will be able to identify the process of growth and development from a seed to a plant..Identify five basic plant needs. describe what a plant needs in order to manufacture its own food. describe how the nutrient content of a soil can be improved. describe a plants role in the hydrologic cycle. identify way plants compete. ociate plants habitats with plant needs. LESSON TIME: Lesson time may vary..First, a cldiscussion brings out that plants need a source of chemical energy, substances to build plant material, and water to survive. Students watch a series of short time-lapses in which they see how plants respond to their environment. Next, they view a about plants living in the desert and identify ways in .