Least productive ecosystem is

Options

A. Grassland
B. Savannah
C. Forest
D. Tundra

Answer

To determine the least productive ecosystem, we can analyze the characteristics of different ecosystems mentioned in the video transcript.

### Step-by-Step Solution:

1. **Identify Ecosystem Types**: The ecosystems mentioned in the video are desert, tundra, savannah, forest, and grassland.

2. **Analyze the Tundra**: The video states that the least productive ecosystem is found in the desert and the Arctic region, specifically referring to the tundra. The tundra is characterized by low temperatures, short growing seasons, and limited vegetation, which contributes to its low productivity.

3. **Consider Other Ecosystems**:
- **Desert**: Deserts have very low productivity due to extreme conditions and limited water availability.
- **Savannah**: This ecosystem has a mix of trees and grass and is more productive than deserts and tundras.
- **Forest**: Forests are noted as the most productive ecosystems due to high biodiversity and abundant plant life.
- **Grassland**: Grasslands are dominated by grasses and are also more productive than deserts and tundras.

4. **Conclusion**: Based on the analysis, the tundra, which is found in the Arctic region and characterized by harsh conditions and limited vegetation, is identified as the least productive ecosystem.

### Final Answer:
The least productive ecosystem is the **tundra**.