Seeds and storage | Biology - Science of the Harvest

Presenter Stefan Gates explores the science behind how plants store energy; in the roots and seeds they, and we, use as food. NOTE: Contains use of blades and naked flames. Teacher review recommended prior to use in class. Subscribe for more Biology clips from BBC Teach on Mondays when we have them in: http://bit.ly/BBCSubscribeTeach If you found this video helpful, give it a like. Share it with someone. Add the video to your own teaching playlists. Create an account, subscribe to the channel and create playlists for different age groups, sets and syllabuses. Follow us on Twitter: http://twitter.com/bbc_teach ===================== Stefan Gates explores the science of energy storage in plants, focusing on the conversion of glucose into starch, and the reasons why plants create winter food stores, especially the potato and its importance as a carbohydrate-rich food. He reveals how some of our most familiar vegetables – including carrots, onions and potatoes – are actually a result of plants’ own survival strategies to provide themselves with enough food over winter. He reveals the secrets of germination and why seeds also need their own supply of energy. This clip is from the BBC series Science of the harvest. Food fanatic Stefan Gates explores the science behind agriculture's most important event, harvest. For our Science of the harvest playlist: bit.ly/scienceoftheharvest For our Biology playlist: bit.ly/BBCTeachBiology For Class Clips users, the original reference for the clip was p01k36jj. ===================== Teaching Biology? Students could look at the four key uses of energy in plants: (a) used in respiration, (b) stored as starch, (c) used to make proteins for growth and repair, and (d) used to make cellulose. Students could then test parts of common fruits and vegetables for starch with iodine and glucose using Benedict’s reagent. If available, students could then use calorimeters (a metal pot holding water above a flame) to test which foodstuff heats the water the most when burned. This shows which foodstuff contains the most energy. How will they make this a valid and reliable experiment? This clip will be relevant for teaching Biology. This topic appears in OCR, Edexcel, AQA, WJEC KS4/GCSE in England and Wales, CCEA GCSE in Northern Ireland and SQA National 4/5 in Scotland. ===================== For more clips from other subjects at the BBC Teach YouTube channel: http://www.youtube.com/bbcteach More resources for teachers from the BBC: http://www.bbc.co.uk/teach More from BBC Learning Zone: http://www.bbc.co.uk/learningzone More resources from BBC Bitesize: http://www.bbc.co.uk/education ===================== Subscribe to create your own customised playlists, and get notified about our latest clips. As we have them, new videos will be uploaded on the following days: Mondays: Biology, Computer Science, Music, Religious Studies Tuesdays: Drama and Performance, English Language, Maths, Physical Education Wednesdays: Languages, Media Studies, Modern Studies and PSHE, Physics Thursdays: Art and Design, Chemistry, Geography, History Fridays: Business Studies, Design and Technology, English Literature, Early Years