Apart from plants and animals, microbes | Class 12 Biology Chapter Ecosystem, Ecosystem NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 12 in the current curriculum.

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Ecosystem. This page offers a step-by-step solution to the specific question from Exercise 0, Question 7:

Apart from plants and animals, microbes form a permanent biotic component in an ecosystem. While plants have been referred to as autotrophs and animals as heterotrophs, what are microbes referred to as? How do the microbes fulfil their energy requirements?

. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 7:

Apart from plants and animals, microbes form a permanent biotic component in an ecosystem. While plants have been referred to as autotrophs and animals as heterotrophs, what are microbes referred to as? How do the microbes fulfil their energy requirements?

Answer:

On the basis of the mode of obtaining food, the organisms occurs in the ecosystem are classified into three main categories: Plants, animals and microorganisms. Plants are the producers, animals are the consumers and microorganisms are the reducers or decomposers which are also known as saprotrophs (sapros- rotton, trophe- nourishment). The microorganisms are mainly bacteria and fungi which obtain their food from the dead organic matter (dead plants and animals and their waste products). They obtain their food from the decomposition process (by which organic compounds are broken down into simple compounds).

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Ecosystem.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 7: Apart from plants and animals, microbes form a permanent biotic component in an ecosystem. While pla....

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