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Define the following term: Photolysis of water

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प्रश्न

Define the following term:

Photolysis of water

परिभाषा
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उत्तर

Releasing electrons and dividing the water molecule (H2O) into its two components (Hydrogen and Oxygen). Photolysis is the term used to describe this reaction, which is characterised by the fracturing of molecules by light (photo = light, lysis = breaking).

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अध्याय 6: Photosynthesis - Review Questions [पृष्ठ ८१]

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सेलिना Concise Biology [English] Class 10 ICSE
अध्याय 6 Photosynthesis
Review Questions | Q D. 1. (d) | पृष्ठ ८१

संबंधित प्रश्न

Name the following:

The category of organisms that prepare their own food from basic raw materials.


Explain the term Plastoquinone.


Give technical term:

Organisms which cannot prepare their own food by photosynthesis.


Choose the Correct Answer:
NADP is expanded as


During photosynthesis, ________ is produced and stored in the leaf.


Sunflowers open the petals in bright light during the daytime but close the petals in dark at night. This response of sunflowers is called ______.


The raw materials for photosynthesis are ______ and ______.


What is the end product of photosynthesis?


A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.

  1. Which aspect of photosynthesis is being tested in the above diagram?
  2. Why was the plant kept in the dark for 24 hours?
  3. After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.

Study the diagram given below and fill in the blanks with suitable words:

In order to prove that carbon dioxide is necessary for

(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.


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