Question

The three major living components of an ecosystem are
1. producers, consumers and decomposers
2. producers, autotrophs and decomposers
3. heterotrophs, consumers and decomposers
4. detrivores, consumers and herbivores

Answer 1

Correct Answer - Option 1 : producers, consumers and decomposers

Explanation:

Ecosystem: All organisms such as plants, animals, microorganisms, and human beings as well as the physical surroundings interact with each other and maintain a balance in nature. All the interacting organisms in an area together with the non-living constituents of the environment form an ecosystem.

Food chain: A food chain shows the feeding relationship between different organisms in a particular environment and/or habitat. A food chain shows how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposes such as fungi. They also show how animals depend on other organisms for food.

• The food chain is distributed between Autotrophs, Hetrotrops, and Decomposers i.e Producers, consumers and decomposers.
• Autotrophs produce their own food like plants, trees and some algae.
• Heterotrophs are consumers i.e. animals, man, insects etc.
• Decomposers are bacteria, fungi etc.

Two type of food chains are found in nature-

1. Grazing Food Chain -
   • The consumers starts with the food chain, utilising the plant as their food, constitute the grazing food chain.
2. Detritus Food Chain - 
   • It starts from dead organic matter of decaying animals and plant bodies consumed by the microorganisms and then to detritus feeding organism called detritivores or decomposers and to other predators.