Give an account of energy flow in an eco | 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 1, Question 11: Give an account of energy flow in an ecosystem.. 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 11: Give an account of energy flow in an ecosystem.
Answer:

Energy enters an ecosystem from the Sun. Solar radiations pass through the atmosphere and are absorbed by the Earth’s surface. These radiations help plants in carrying out the process of photosynthesis. Also, they help maintain the Earth’s temperature for the survival of living organisms. Some solar radiations are reflected by the Earth’s surface. Only 2-10 percent of solar energy is captured by green plants (producers) during photosynthesis to be converted into food. The rate at which the biomass is produced by plants during photosynthesis is termed as ‘gross primary productivity’. When these green plants are consumed by herbivores, only 10% of the stored energy from producers is transferred to herbivores. The remaining 90 % of this energy is used by plants for various processes such as respiration, growth, and reproduction. Similarly, only 10% of the energy of herbivores is transferred to carnivores. This is known as ten percent law of energy flow.

Energy Flow in Ecosystem.

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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Comments

  • Litu pradhan
  • Feb 06, 2019

Nice

  • Usman
  • Jan 19, 2019

Superb answer

  • Chandra Prakash Nagar
  • Jan 05, 2019

Sandar

  • Akshita thakur
  • Nov 04, 2018

Osm answer

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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 1 , Question 11: Give an account of energy flow in an ecosystem.....

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