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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

Photosynthesis converts energy X into energy Y. What are X and Y? Green plants are autotrophic in their mode of nutrition. Why?

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Question

Photosynthesis converts energy X into energy Y.

  1. What are X and Y?
  2. Green plants are autotrophic in their mode of nutrition. Why?
Short/Brief Note
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Solution

  1. X is light energy. Y is chemical energy. During photosynthesis, the light energy is converted into chemical energy.
  2. Green plants are autotrophic in their mode of nutrition because they prepare their food, through a process called photosynthesis by using water, carbon dioxide, chlorophyll and sunlight.
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Chapter 19: Plant Physiology - Exercise [Page 231]

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Samacheer Kalvi Science [English] Class 9 TN Board
Chapter 19 Plant Physiology
Exercise | Q V. 4. | Page 231

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