plants also need carbon,hydrogen and oxygen to survive. Water absorbed from the soil provides the hydrogen and oxygen. During photosynthesis, carbon and water are used to synthesize food. They also need nitrate to make amino acids (Amino acid an ingredient for making protein). In addition to that, they need magnesium to make chlorophyl.
In this lesson, we shall learn more about how plants manufacture food (photosynthesis), and learn more about the conditions that must be present for this to happen.
يمكن للمعلم طرح بعد الاسئلة على الطلاب مع كتابة أجاباتهم على السبور
هل النباتات ذاتية التغذيه؟
ما اسم العمليه التي من خلالها تبني الغذاء؟
اين تحدث هذه العمليه؟
ما هي المواد الضروريه لحدوث هذه العمليه؟
ما هي المواد الناتجه من هذه العمليه؟
ما هو اسم الغاز المنطلق من الاوراق في هذه العمليه؟
ما اسم الغاز الضروري لحدوث هذه العملية؟
Photosynthesis is a chemical process through which plants, some bacteria and algae, produce glucose and oxygen from carbon dioxide and water, using only light as a source of energy.
عملية البناءالضوئي ( Photosynthesis )
This process is extremely important for life on earth as it provides the oxygen that all other life depend on.
What does the plant need glucose (food) for?
Just like humans and other living things, plants also need this food for many things. Le's see a few:
Glucose resulting from photosynthesis is used during respiration to release energy that the plant needs for other life processes.
The plant cells also convert some of the glucose into starch for storage. This can then be used when the plant needs them. This is why dead plants are a used as biomass, because they have stored chemical energy in them)
Glucose is also needed to make other chemicals such as proteins, fats and plant sugars that are all need for the plant to carry out essential growth and other life processes.
Just like humans and other living things, plants also need this food for many things. Le's see a few:
Glucose resulting from photosynthesis is used during respiration to release energy that the plant needs for other life processes.
غاز ثاني أكسيد الكربون + الماء + وجود ضوء الشمس+ وجود الكلوروفيل ← غاز الأكسجين+ الماء+ جلوكوز (بديل السكر).
The plant cells also convert some of the glucose into starch for storage. This can then be used when the plant needs them. This is why dead plants are a used as biomass, because they have stored chemical energy in them)Glucose is also needed to make other chemicals such as proteins, fats and plant sugars that are all need for the plant to carry out essential growth and other life processes.ويتم اجمال الشرح ومناقشه المصطلحات من خلال الاسئله التاليه
* ما هي عملية التركيب الضوئي؟
* اين تحدث في النباتات؟
* ما هي المواد الضروريه لحدوثها؟
* ما هي المواد الناتجه؟
* في اي ساعات من اليوم تحدث هذه العمليه؟
Light and dark reactions in photosynthesis
:Photosynthesis is divided in two parts
Light-dependent reactions (light reactions)-
- Light-independent reactions (dark reactions).
Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls.
Dark reactions make use of these organic energy molecules (ATP and NADPH). This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma. ATP provides the energy, while NADPH provides the electrons required to fix the CO2(carbon dioxide) into carbohydrates.
NOTES
This means Dark reactions will fail to continue if the plants are deprived of light for too long, since they use the output of the initial light-dependent reactions.
http://mawdoo3.com/
http://letuslivescience.blogspot.com.eg/
http://www.teachengineering.org/
http://mawdoo3.com/
http://letuslivescience.blogspot.com.eg/
http://www.teachengineering.org/
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