Nutritional System in Nature — Flashcards
Gujarat Board · Class 10 · Social Science
20 flashcards for Nutritional System in Nature (Gujarat Board Class 10 Social Science) to test yourself on key terms and facts.
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What is the basic principle behind nature's nutritional system?
Answer
Nature is a well-planned, self-governing, and self-sustaining system where plants get all essential nutrients naturally without human help. The basic law is that whatever elements come from nature mus…
According to Dr. Subhash Palekar, what are the four types of natural nutritional arrangements?
Answer
1. Regulation of nutrients through the food cycle 2. Provision of nutrients to plant roots by capillary action 3. Rain by cyclone (thunderstorm) 4. Activities of local earthworms…
Describe the carbon cycle in nature's nutritional system.
Answer
Green leaves take carbon dioxide from air through photosynthesis to produce food stored in plants. When plants die, bacteria decompose them and release carbon dioxide back to air. If plants burn, carb…
What percentage of Earth is covered with water, and how does the water cycle work?
Answer
71% of Earth is covered with water. Sun's heat evaporates ocean water forming clouds, which rain on land. Water flows through rivers back to ocean or becomes underground water that eventually reaches …
Explain the energy cycle in nature.
Answer
Sun is the main source of energy, continuously converting matter into energy. Some energy reaches Earth through sun rays. Green leaves store solar energy through photosynthesis. Herbivores get energy …
What did the leaf burning experiment demonstrate about nature's balance?
Answer
The experiment showed: difference in weight between green and dry leaves is water content; burning releases fire and smoke (carbon dioxide taken from air and solar energy); remaining ashes are element…
What is humus and why is it important in the food cycle?
Answer
Humus is organic matter where biological, biochemical, and chemical processes occur continuously. It's formed near plant roots by millions of microbes that decompose biomass. Microbes get 25% sucrose …
How does capillary action provide nutrients to plant roots?
Answer
After rainy season, groundwater stored by gravity returns to plant roots through capillary action. As moisture rises from deep soil, it brings minerals stored in deep soil upward and stores them near …
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