Question

Source of energy in the ecosystem is
A. Sun
B. Sugar produced in photosynthesis
C. Green plants
D. ATP

Answer 1

Hint: Ecosystem refers to a community of living organisms along with the nonliving components of their environment, interacting as a system.

Complete Answer:
Let’s discuss all the given options and find the correct answer:

- The ecosystem consists of producers, consumers, decomposers, and non-living like water, air, and land. The Sun is the major source of energy for organisms and also the ecosystems of that area. Producers like plants, algae, and bacteria use the energy from daylight to form organic matter from carbon dioxide and water. From plants, the energy is transferred to primary consumers and secondary consumers and decomposers. Therefore, this is the correct option.

- During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose. The sugar molecules are used by the plants. Therefore, this is an incorrect option.

- Green plants are said to be producers of the ecosystem as they produce food for the consumers by the process of photosynthesis. Plants, being primary producers, are of great importance in the ecosystem. Therefore, this is an incorrect option.

- ATP or Adenosine triphosphate is an organic molecule. ATP hydrolysis provides the energy needed for many essential processes in organisms and cells. Therefore, this is an incorrect option.

Hence the correct answer is option A.

Note: It is to be noted that the ecosystem is maintained by the cycling energy and nutrients obtained from different external sources. But it is also to be noted that energy can neither be created nor be destroyed. Thus, the same energy is recycled over and over again.