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What is a Food Chain? Video Lecture | Science Class 7 (Old NCERT)

FAQs on What is a Food Chain? Video Lecture - Science Class 7 (Old NCERT)

1. What is a food chain?

Ans. A food chain is a sequence of organisms in which each organism is the food of the next organism. It represents the transfer of energy and nutrients from one organism to another in an ecosystem.

2. What are the components of a food chain?

Ans. A food chain consists of three main components: producers, consumers, and decomposers. Producers, such as plants, produce their own food through photosynthesis. Consumers, including herbivores, carnivores, and omnivores, feed on these producers or other consumers. Decomposers, like bacteria and fungi, break down the remains of dead organisms and recycle nutrients back into the ecosystem.

3. How does energy flow in a food chain?

Ans. Energy flows through a food chain in a unidirectional manner. Producers capture sunlight energy and convert it into chemical energy through photosynthesis. This energy is then passed on to the primary consumers (herbivores) when they consume the producers. The energy is further transferred to secondary consumers (carnivores/omnivores) when they consume the herbivores. This energy transfer continues to higher-level consumers until it reaches decomposers, who release it back to the environment.

4. What is the significance of a food chain in an ecosystem?

Ans. Food chains are vital in maintaining the balance of an ecosystem. They regulate the transfer of energy and nutrients between different organisms, ensuring the survival and stability of the entire ecosystem. They also help in understanding the interdependence of species within an ecosystem and the consequences of disruptions or changes in the food chain.

5. Can a food chain be interconnected?

Ans. Yes, food chains can be interconnected to form a food web. A food web is a more realistic representation of the feeding relationships in an ecosystem as it considers multiple interconnected food chains. It shows the complex interactions between different species and how energy flows through various pathways. Interconnected food chains provide a more comprehensive understanding of the ecosystem's dynamics.

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Oct 05, 2025 Last updated

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	Science Class 7 (Old NCERT) 112 videos\|286 docs\|28 tests

Science Class 7 (Old NCERT)

112 videos|286 docs|28 tests

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