Question:

Which of the following is not a producer ?

Updated On: Jul 5, 2022
  • Spirogyra
  • Agaricus
  • Volvox
  • Nostoc
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The Correct Option is B

Solution and Explanation

Spirogyra (Green alga), Volvox and Nostoc (BGA) are chlorophyll containing organisms and thus prepare their own food. Agaricus is a fungus (Basidiomycetes). It is achlorophyllus and not a producer. It possesses saprotrophic mode of nutrition.
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Concepts Used:

Ecosystem

An ecosystem is a structural and functional unit of ecology where the living organisms come in to interact with each other and the surrounding environment.

Structure of the Ecosystem:

The structure of an ecosystem is distinguished by the organization of both biotic and abiotic components. This involves the distribution of energy in our environment. It also comprises the climatic conditions prevailing in that particular environment. 

There are two main components of the structure of an ecosystem, namely: 

  • Biotic Components
  • Abiotic Components

The biotic and abiotic components are interconnected in an ecosystem. It is an open system where the energy and components can flow through the boundaries.