Question

Class VII

Find out that how sunlight is required for the process of synthesis of food in plants.

If you eat any of your favourite dish like Kheer, Dal, Rice etc., then list out and draw each and every part of your digestive system, through which it passes. Also find out the role of each part in the digestion of that food.

Prepare a turmeric paper indicator and find out the changes in its colour by using various types of liquids like water, detergent, oil, etc.​

Answer 1

Explanation: During photosynthesis sunlight act as ultimate source of energy and it also covert the water and co2 into sugar called glucose.

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Answer 2

• Sunlight is very important for plants for the process of photosynthesis.
• The leaves of the plant trap the sunlight which has energy. This energy is used by the plants to change water and carbon dioxide into a sugar called glucose.
• This glucose is used by plants for energy and to make various other substances.
• The food that we eat enters our body through the mouth then the throat to reach the esophagus.
• The food is stored in the stomach and then passed to the small intestine and large intestine and finally comes out of the anus.