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 1:
A farmer harvests his crop and expresses his harvest in three different ways.
a. I have harvested 10 quintals of wheat.
b. I have harvested 10 quintals of wheat today in one acre of land.
c. I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing.
Do the above statements mean one and the same thing. If your answer is yes, give reasons. And if your answer is ‘no’ explain the meaning of each expression.
A farmer harvests his crop and expresses his harvest in three different ways.
a. I have harvested 10 quintals of wheat.
b. I have harvested 10 quintals of wheat today in one acre of land.
c. I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing.
Do the above statements mean one and the same thing. If your answer is yes, give reasons. And if your answer is ‘no’ explain the meaning of each expression.
In this question, farmer only wants to explain the productivity but all the three statements that are given in this; the meanings are very much different. So, the answer is no.
Productivity refers to the rate of formation of biomass in an ecosystem and is usually expressed in the unit of mass per unit area per unit time. Primary productivity refers to the rate at which biomass is produced per unit area by the primary producers; it can be expressed as grams of carbon assimilated and dry weight of organic matter and their energy equivalents. It is a fundamental ecosystem process which shows capture, storage and transfer of energy in an ecosystem.
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:
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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 1: A farmer harvests his crop and expresses his harvest in three different ways. a. I have harvested 1....
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