Question

Which of the following statements is not correct on pyramids of numbers, biomass, and energy?

• A. The pyramid of biomass in the sea is generally inverted.
• B. The pyramid of energy is always upright
• C. The pyramid of biomass in the sea is generally upright.
• D. The pyramid of numbers in a grassland ecosystem is upright.

Answer 1

The correct option is C

The pyramid of biomass in the sea is generally upright.

The correct option is C

Explanation of the correct option:

1. Due to the fact that the amount of biomass is least at the base and most at the top of the pyramid, the pyramid of biomass in the sea is inverted.
2. Fish biomass outweighs phytoplankton biomass, and in this case, trophic level biomass is defined by the member's longevity and capacity for reproduction. In the marine environment, the biomass pyramids are flipped.

Explanation of the incorrect option:

Option A:

The pyramid of biomass in the sea is inverted because the biomass is high in the upper blocks of the trophic level than in the lower blocks.

Option B:

The energy pyramid is always upright because some energy is always wasted as heat when the energy moves from one trophic level to another.

Option D:

1. In a grassland ecosystem, the number of producers—mostly grasses—is always at its highest, followed by dwindling populations of herbivores at the second and third trophic levels and apex predators at the lowest.
2. As a result, a grassland pyramid of numbers is vertical.

Final answer: The wrong statement is the pyramid of biomass in the sea is generally upright.