Roots Need Oxygen
Learners investigate the growth of plants in soil with oxygen and soil without oxygen. They discuss what roots need to survive, and chart the growth of two plants to analyze the difference between plain soil and soil with two earthworms.
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Transport in Plants, Part 2: Xylem and Transpiration
Ninety-nine percent of the water absorbed in plants transpires into the atmosphere. The second video in a three-part series explains transpiration in plants. It details how they pull water into the roots; how water passes through the...
4 mins 6th - 12th Science CCSS: Adaptable
New Review How Plants Find Food
How do roots find nutrients? The PBS video, part of a series on food science, describes experiments proving roots grow specifically toward nutrients in the soil. A theory of how roots know in which direction to grow provides an...
8 mins 6th - 12th Science CCSS: Adaptable