Transportation Systems in Plants
- Grade Level: Senior High (10-12)-Adult
- Subjects: Biology
- Produced By: VEA Group Pty Ltd
- Year: 2009
- Country: Australia
- Language: English
- Running Time: 25m
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This program explores the need for many multicellular plants to have specialized internal transport systems. These are systems that can efficiently distribute materials from soil and from leaves to the parts of the plants where they are needed. An overview of how plants obtain their nutrients is provided. The structure and function of root hairs is explored, explaining their remarkable ability to facilitate an enormous uptake of water and dissolved minerals for the plant. Following this, the separate transport systems of the xylem and phloem are explored in detail. The program explains the mechanisms by which vascular plants transport water and minerals upwards from the roots, and sugars from leaves and other sugar sources throughout the plant for storage or for growth and repair.