What is a food web? (ii) In a food web which organism are called producers?

Question

Read the paragraph and answer the questions: (2) Food web A food chain is a linear network of links in a foodie web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), order composer species (such as fungi or bacteria), A food chain also shows how the organisms are related with each other by the food they eat. Each level of a food chain represents a different trophic level. A food chain differs from a food web, because the complex network of different animal’s feeding relations are aggregated and the chain only follows a direct, linear pathway of one animal at a time. Natural interconnections between food chains make it a food web. A common metric used to the quantify food web trophic structure is foodie chain length. In its simplest form, the length of a chain is the number of links between a trophic consumer and the base of the web and the mean chain length of an entire web is the arithmetic average of the lengths of all chains in a food web. The food chain is an energy source diagram. Many food webs have a keystone species. A key stone species is a species that has a large impact on their surrounding environment and can directly affected food chain. If this keystone species dies off it can set the entire food chain off balance. Key stone species keep herbivores from depleting all of their foliage in their environment and preventing a mass extinction. Food chains were first introduced by the Arab scientist and philosopher Al-Jahiz in the 10th century and later popularized in a book I published in 1927 by Charles Elton, which also i introduced the food web concept. (i) What is a food web? (ii) In a food web which organism are called producers? (iii) What is the role of keystone species? (iv) What is a keystone species? (v) What does each level of food chain represent? Select the correct answer from above options Science questions and answers, Science questions pdf, Science question bank, Science questions and answers pdf, mcq on Science pdf,Science book pdf,Science pdf notes,Science lecture notes,Science of light,maxwell Science,Science proposed by,electromagnetic theory engineering physics,Science nptel

Answer 1

(i) Food web is a linear network of links of food chains. (ii) In a food web which organism which can produce food by photosynthesis are called producers. (iii) Keystone species keep herbivores from depleting all of the foliage in their environment and preventing a mass extinction. (iv) A keystone species is a species that has a large impact on the surrounding environment and can directly affect the food chain. (v) Each level of a food chain represents a different trophic level.