Pyramid of numbers in grassland ecosystem is

Options

A. linear
B. upright
C. inverted
D. negative.

Answer

### Step-by-Step Solution:

1. **Understanding the Pyramid of Numbers**: The pyramid of numbers represents the number of organisms at each trophic level in an ecosystem. In a grassland ecosystem, this pyramid typically shows how many producers, herbivores, and carnivores are present.

2. **Identifying the Trophic Levels**:
- **Producers**: At the base of the pyramid, we have the producers, primarily green plants, which are the most numerous.
- **Herbivores**: The next level consists of herbivores that feed on the producers. Their numbers are fewer than the producers.
- **Carnivores**: Above the herbivores, we have carnivores that feed on the herbivores. Their numbers are even fewer.
- **Top Carnivores**: At the top of the pyramid, we have the top carnivores, which are the least numerous.

3. **Drawing the Pyramid**: When visualizing the pyramid, it should be shaped like a triangle, with the largest section at the bottom (producers) and progressively smaller sections as you move up (herbivores, carnivores, and top carnivores).

4. **Identifying the Type of Pyramid**: In the grassland ecosystem, the pyramid of numbers is typically an **upright pyramid**. This means that as you move from the base (producers) to the top (top carnivores), the number of organisms decreases.

5. **Conclusion**: Therefore, the pyramid of numbers in a grassland ecosystem is classified as an **upright pyramid**.