Question

Read the following statements (I and II) related to the ecosystem and identify the correct option.

I: It is a functional unit of nature
II: Entire biosphere is considered a local ecosystem

• A. Both statements I and II are correct
• B. Both statements I and II are incorrect
• C. Statement I is correct and statement II is incorrect
• D. Statement I is incorrect and statement II is correct

Answer 1

The correct option is C Statement I is correct and statement II is incorrect

An ecosystem is a stable self-sustained, functional unit of the nature formed by the interactions between the biotic (living) and abiotic (non-living) components that are comprised in it.

The abiotic components include the non-living factors like the water, temperature, light and soil.

The biotic components include producers, consumers and decomposers.

Hence, an ecosystem is a dynamic unit and the different components of an ecosystem work as a unit to perform basic functions that help in the sustenance of the ecosystem

Hence, statement I is correct.

Ecosystems vary greatly in size such as a tree to a large forest.

Ecologists consider the entire biosphere (whole living zone of the Earth) as a global ecosystem, as a composite of all local ecosystems on Earth. This global ecosystem is further divided into terrestrial and aquatic ecosystems.

So, statement II is incorrect.