Question

Identify, which one of the following is an example of incomplete ecosystem?

• A. Grassland
• B. Cave
• C. River
• D. Wetland

Answer 1

Answer: (B)

According to Southwick, the ecosystems which do not contain all the four components, i.e., abiotic components, producers, consumers, and decomposers are considered as incomplete ecosystems. The abyssal depth of sea and cave contain only consumers and decomposers, but no producers and are thus called as the incomplete ecosystems.

So, the correct answer is option B.