DIO 5. Grassland, forest, desert, etc., are the examples of ecosystem Answer the following questions. 1. What is an ecosystem? What are the special features of an ecosystem? 2. Define abiotic and biotic components of an ecosystem. 3. What is meant by heterotrophs and decomposers? 4. What is the importance of heterotrophs and decomposers in an ecosystem? 5. Write a note on the function of an ecosystem 6. How does energy flow in an ecosystem? 7. What will happen if there are no producers and no decomposers in the ecosystem? 8. State the difference between food chain and food web. Draw diagram of each to explain 13
Answers
Answer:
Explanation:
1. An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Ecosystems can be very large or very small.
2.Biotic components are the living things that have a direct or indirect influence on other organisms in an environment. For example plants, animals, and microorganisms and their waste materials. Abiotic components of an ecosystem include all chemical and physical elements i.e. non-living components.
3.Heterotrophs (or consumers) get organic molecules by eating other organisms or their by-products. Animals, fungi, and many bacteria are heterotrophs. Specialized heterotrophs, called decomposers break down dead organic material and wastes.
4. Consumers (heterotrophs) cannot manufacture their own food and need to consume other organisms. Decomposers break down dead plant and animal material and wastes and release them into the ecosystem as energy and nutrients for recycling
5.The functions of the ecosystem are as follows: It regulates the essential ecological processes, supports life systems and renders stability. It is also responsible for the cycling of nutrients between biotic and abiotic components. It maintains a balance among the various trophic levels in the ecosystem.
6.Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next
7.Wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem. Producers would not have enough nutrients. ... Essentially, many organisms could not exist.
8.A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels.
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