Detritus Food Chain & Decomposers — NEET Biology
📚 Practice ConceptThe detritus food chain (DFC) begins with dead organic matter. It is made up of decomposers which are heterotrophic organisms, mainly fungi and bacteria. They meet their energy and nutrient requirements by degrading dead organic matter or detritus. These are also known as saprotrophs (sapro: to decompose). Decomposers secrete digestive enzymes that breakdown dead and waste materials into simple, inorganic materials, which are subsequently absorbed by them.
Which of the following statements are correct? 1. The stratification of plants in a forest ecosystem influences productivity levels. 2. Secondary productivity is higher than NPP in all ecosystems. 3. Detritus food chain starts with decomposers breaking down organic matter. 4. Standing crop biomass decreases progressively at higher trophic levels. 5. In aquatic ecosystems, pyramid of biomass may be inverted.
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