Class 7th Science NCERT Chapter 1
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Topics and Summaries:
1. Mode of Nutrition in Plants:
– Plants are autotrophs that produce food from water, carbon dioxide, and minerals using photosynthesis. Animals are heterotrophs that depend on plant-derived food.
2. Photosynthesis – Food Making Process in Plants:
– Photosynthesis occurs in the leaves, green stems, and branches of plants, where chlorophyll captures sunlight to synthesize food from carbon dioxide and water, releasing oxygen.
3. Synthesis of Plant Food other than Carbohydrates:
– Plants use nitrogen from the soil and convert it into usable forms for protein synthesis. Plants without chlorophyll rely on other plants for nutrition through a heterotrophic mode.
What are the components of food that are necessary for the human body?
What is the mode of nutrition in which organisms make food themselves from simple substances called?
Where does photosynthesis take place in plants and which part of the plant is referred to as the food factory?
What is the unique process that occurs in plants in the presence of sunlight, chlorophyll, carbon dioxide, and water?
How do plants that do not have chlorophyll obtain their nutrition?
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