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Oxygen Given Out During Photosynthesis Comes from Water. Explain this Statement. - Biology

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प्रश्न

Oxygen given out during photosynthesis comes from water. Explain this statement.

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उत्तर

During the process of photolysis under light reaction, the water molecule split up to release H+ and OH ions. These OH react to liberate oxygen. Thus we can say that oxygen liberated during photosynthesis comes from water.

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पाठ 5: Photosynthesis - Short Questions

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आईसीएसई Biology [English] Class 10 ICSE
पाठ 5 Photosynthesis
Short Questions | Q 13

संबंधित प्रश्‍न

Identify the odd one in each set : Transpiration, Photosynthesis, Phagocytosis, Guttation


Name the following:

The principle site in a green leaf for photosynthesis.


The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because


What is the importance of photosynthesis in the life of the following:

Animals


Explain the term Plastoquinone.


Fill in the blank by rearranging the letter in the bracket.

During photosynthesis plants releases _________ (egxyno).


Higher Order Thinking Skill.

Imagine that student A studied the importance of certain factors in photosynthesis. He took a potted plant and kept it in dark for 24 hours. In the early hours of the next morning, he covered one of the leaves with dark paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.

  1. What aspect of photosynthesis was being investigated? 
  2. Why was the plant kept in the dark before the experiment? 
  3. How will you prove that starch is present in the leaves?
  4. Name the raw materials needed for photosynthesis.

Read the following sentences about photosynthesis:

  1. Sunlight, carbon dioxide, chlorophyll and water are necessary.
  2. Oxygen is absorbed.
  3. Leaves carry out photosynthesis.
  4. Proteins are made during photosynthesis. 

Choose the correct pair of sentences that are true to photosynthesis.


Guard cells of stomata are green but cannot photosynthesize? Give reason.


What are stomata?


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