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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ९

The chemical reaction occurs during photosynthesis is ______. - Science

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प्रश्न

The chemical reaction occurs during photosynthesis is ______.

विकल्प

  • CO2 is reduced and water is oxidized

  • water is reduced and CO2 is oxidized

  • both CO2 and water are oxidized

  • both CO2 and water are produced

MCQ
रिक्त स्थान भरें

उत्तर

The chemical reaction occurs during photosynthesis is CO2 is reduced and water is oxidized

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अध्याय 19: Plant Physiology - Exercise [पृष्ठ २३०]

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सामाचीर कलवी Science [English] Class 9 TN Board
अध्याय 19 Plant Physiology
Exercise | Q I. 2. | पृष्ठ २३०

संबंधित प्रश्न

 State the main functions of the following:
Cytokinins


Mention two ways in which photosynthesis is useful to life.


Complete the following by filling in the blanks numbered 1 to 10 with the appropriate word/term:

Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) ______ gets activated by absorbing light energy. This energy splits (2) ______ molecules to (3) ______ and oxygen and releases two electrons. This process is called (4) ______. The (5) ______ ions are picked up by NADP to form (6) ______. The ADP is converted to (7) ______. This process is called (8) ______. During the dark phase, the compound produced at the end of the light reaction reacts with carbon dioxide to form (9) ______. This product is converted to starch. The process is called (10) ______.


Choose the correct answer:
In a typical leaf, photosynthesis occurs mainly in ___________


Name the following:

The first form of food substance produced during photosynthesis. 


Are the following statement true or false? Give a reason in support of your answer.

Photosynthesis is considered as a process supporting all life on earth.


A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black 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.

Describe step by step, how the candidate proceeded to test the leaf for the presence of starch?


 All life on earth Would come to an end if there were no green plants.


Why should the light-dependent reaction occur before the light-independent reaction?


What are primary producers?


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