Question

The pyramid of number in the grassland ecosystem is

• A. Irregular
• B. Always Erect
• C. Always Inverted
• D. Either Erect Or Inverted

Answer 1

The correct option is B

Always Erect

The correct option is B.

Explanation of the correct option:

1. The pyramid of numbers is a diagrammatic representation of the total number of individuals that can be found at each level of a food chain in varying ecosystems.
2. The pyramid of numbers is always erect in the case of a grassland ecosystem because the base of the pyramid in the grassland ecosystem is composed of grass which is followed by primary and secondary consumers.
3. Since the number of primary and secondary consumers goes on decreasing in comparison to grass, the pyramid always stays erect.

Explanation of the incorrect options:

Option A:

An irregular pyramid of numbers is formed when the biomass of each level constituting the pyramid is taken into consideration.

Option C:

The pyramid of numbers of a grassland ecosystem can never be inverted because the amount of grass is higher than the primary consumer and the number of primary consumers is higher than secondary consumers.

Option D:

The pyramid of numbers of a grassland ecosystem is always erect and not inverted.

Final answer: The pyramid of numbers in the grassland ecosystem is always erect.