Sciences - Co-ordinated (Double) - 0654 CIE

Photosynthesis

Bayani Gaba-gaba

Almost all the food on Earth, and the oxygen you are breathing right now, can be traced back to one process happening in green leaves: photosynthesis. Plants capture the energy of sunlight and lock it into sugar, building food out of nothing more than carbon dioxide and water.

In this lesson you will learn exactly what photosynthesis is, the word equation you must know by heart, the role of chlorophyll, and, at Extended level, the balanced symbol equation. By the end you will be able to explain how plants make their own food and why that matters for every living thing.

Manufura

  1. Describe photosynthesis as the process by which plants synthesise carbohydrates from raw materials using energy from light
  2. State the word equation for photosynthesis as: carbon dioxide + water → glucose + oxygen in the presence of light and chlorophyll
  3. State that chlorophyll is a green pigment that is found in chloroplasts
  4. State that chlorophyll transfers energy from light into energy in chemicals, for the synthesis of carbohydrates
  5. [Supplement] State the balanced chemical equation for photosynthesis as: 6CO + 6H O → C H O + 6O 2 2 6 12 6 2

Darasin Sauti

Saurari wannan darasi a cikin manhaja

Taswirar tunani

An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.

Bude taswirar tunani a cikin manhaja

Katunan tunawa

Gwaji mai sauri kan abin da ake jarraba a wannan batu.

Yi atisayen wadannan katuna a cikin manhaja

Takardar Darasi

Photosynthesis is the foundation of nearly every food chain and the source of atmospheric oxygen. Examiners insist on the exact word equation and the roles of light and chlorophyll, and Extended candidates must give the balanced symbol equation. Get these precise and you secure the core marks of an entire section of the syllabus.

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Nazarin Darasi

Barka da kammala darasi akan Photosynthesis. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.

Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.

Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.

  1. The raw materials for photosynthesis are: A. glucose and oxygen B. carbon dioxide and water C. oxygen and water D. glucose and carbon dioxide Answer: B
  2. In the word equation for photosynthesis, the products are: A. carbon dioxide + water B. glucose + oxygen C. starch + carbon dioxide D. oxygen + water Answer: B
  3. Chlorophyll is found in the: A. nucleus B. mitochondria C. chloroplasts D. ribosomes Answer: C
  4. The role of chlorophyll is to: A. produce carbon dioxide B. absorb light energy and transfer it to chemical energy C. store glucose D. release water Answer: B
  5. The balanced symbol equation for photosynthesis is: A. CO2 + H2O -> C6H12O6 + O2 B. 6CO2 + 6H2O -> C6H12O6 + 6O2 C. 6CO2 + H2O -> C6H12O6 + O2 D. CO2 + 6H2O -> 6C6H12O6 + O2 Answer: B

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Kana son yin aikin tambayoyin gwaji kan Photosynthesis? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.

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