What is Photosynthesis? Why is photosynthesis Important?
Автор: Science Up with the Singing Zoologist
Загружено: 2022-03-01
Просмотров: 6552
What is photosynthesis? Why is photosynthesis important? Do plants eat sunlight?
This episode of Speaking Scientifically provides a simple and lively introduction to photosynthesis, explaining what plants need (carbon dioxide and water) and how they use sunlight to create sugars.
It also provides a look at oxygen that an elodea water plant is "breathing out."
0:00 Today's word: photosynthesis
0:16 How do plants use sunlight?
0:33 How do animals use sugar?
1:02 What do plants need to make sugar? Carbon dioxide and water
1:52 How does energy pass from plants, to herbivores, to carnivores?
2:21 Where does oxygen come from?
2:39 What is the Oxygen/Carbon dioxide cycle (O2/CO2 cycle)
Sugar molecule model: public domain
Girl and tree drawing by Brady Smith, used with permission
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