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Food Chain and Food Web Video Lecture | Environment for UPSC CSE

FAQs on Food Chain and Food Web Video Lecture - Environment for UPSC CSE

1. What is the difference between a food chain and a food web?

Ans. A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers. In contrast, a food web is a more complex network of interconnected food chains, illustrating how different species are related through multiple feeding relationships and interactions within an ecosystem.

2. Why are food chains and food webs important for ecosystems?

Ans. Food chains and food webs are crucial for ecosystems as they demonstrate the flow of energy and nutrients, helping to maintain ecological balance. They show how organisms depend on one another for survival and contribute to biodiversity. Understanding these concepts aids in studying the effects of changes in populations or environmental conditions on the ecosystem as a whole.

3. How do human activities impact food chains and food webs?

Ans. Human activities, such as pollution, habitat destruction, and overfishing, can disrupt food chains and food webs by altering the availability of resources, reducing biodiversity, and causing species extinction. These impacts can lead to imbalances in ecosystems, affecting species populations and the overall health of the environment.

4. What are some examples of producers, consumers, and decomposers in a food web?

Ans. In a food web, producers include plants and phytoplankton that convert sunlight into energy through photosynthesis. Consumers can be classified into primary consumers like herbivores (e.g., rabbits, deer), secondary consumers like carnivores (e.g., foxes, snakes), and tertiary consumers (e.g., eagles, lions). Decomposers, such as fungi and bacteria, break down dead organic matter, returning nutrients to the soil and completing the cycle.

5. How can studying food chains and food webs help in conservation efforts?

Ans. Studying food chains and food webs helps identify key species and their roles in ecosystems, which is vital for conservation efforts. By understanding the relationships and dependencies among species, conservationists can develop strategies to protect critical habitats, restore ecosystems, and maintain biodiversity, ensuring the health and stability of the environment for future generations.

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Oct 13, 2025 Last updated

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Video Description: Food Chain and Food Web for UPSC 2025 is part of Environment for UPSC CSE preparation. The notes and questions for Food Chain and Food Web have been prepared according to the UPSC exam syllabus. Information about Food Chain and Food Web covers all important topics for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Food Chain and Food Web.

Introduction of Food Chain and Food Web in English is available as part of our Environment for UPSC CSE for UPSC & Food Chain and Food Web in Hindi for Environment for UPSC CSE course. Download more important topics related with notes, lectures and mock test series for UPSC Exam by signing up for free.

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	Environment for UPSC CSE 95 videos\|231 docs\|52 tests

Environment for UPSC CSE

95 videos|231 docs|52 tests

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