Tuesday, January 25, 2011


Today in class mr Finley came around and checked our homework. Then we had a question on the board that said if we landed on a new planet why would scientists tell you to plant green plants and what we would have to know about the planet before we do it. Our class was trying to figure it out then we figured out the reason we need to put plants on a new planet is because of oxygen. Plants give off oxygen in photosynthesis and we take it in. We need plants on that planet so we can breathe. We also said that the planet also needed water, carbon dioxide and light because those things are neccesary in plant life and we need plants to survive so therefore we need all those three things. Mr Finley then came back to the question he asked earlier which was "can plants survive without oxygen?" about half the class said yes and have the class said no. The correct answer was no. Plants can't survive without oxygen because it is a neccesity in their life. He also said that the biggest differnce between humans and plants is that plants make their own food and humans don't. We also said that fruits and carbs have alot of glucose and the reason people eat carbs before they do a sport is because it has alot of energy.
Jake P

3 comments:

  1. The reason plants need oxygen is because they need it to break down the glucose and use it for energy
    Stephen Ferraro

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  2. Also the reason why some people say that it is bad to eat carbs is that if you don't exercise and use that energy it will get stored up and that energy will turn into fat.
    TG

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  3. Your picture is inaccurate. Your picture suggests that oxygen gets released right after photosynthesis. This is wrong. The oxygen needs to get to the glucose to break it down. Then as a result of this process (cellular respiration) oxygen gets released. It does not get released forom photosynthesis, it gets released after cellular respiration.
    Jordan Price

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