Question

Which one of the following is not a natural ecosystem?

• A. Pond ecosystem
• B. Grassland ecosystem
• C. Forest ecosystem
• D. Cropland ecosystem

Answer 1

The Correct Option is D

To determine which option is not a natural ecosystem, we first need to define what a natural ecosystem is. A natural ecosystem is an environment that occurs naturally without significant human intervention, where organisms interact with each other and their physical environment.

Let's analyze each option:

• Pond Ecosystem: This is a natural ecosystem where water, aquatic plants, animals, and microorganisms interact.
• Grassland Ecosystem: These are large, open areas of grass with few trees, existing naturally in certain climates and supporting various wildlife.
• Forest Ecosystem: Comprising different types of forests like rainforests, temperate forests, and coniferous forests, these ecosystems occur naturally with a diverse range of flora and fauna.
• Cropland Ecosystem: This is a human-managed ecosystem where crops are cultivated for food and other resources. It does not occur naturally as it involves significant human modification and management.

Based on this analysis, the Cropland Ecosystem is not a natural ecosystem because it requires human intervention and maintenance for the cultivation of crops. Therefore, the correct answer is:

Cropland ecosystem