The upright pyramid of number is absent in

Options

A. Pond
B. Forest
C. Lake
D. Grassland

Answer

B

Explanation

Pyramid of number represents the number of individuals per unit area at various trophic levels. It is always upright in grassland, pond and lake ecosystem. But in forest or single tree ecosystem, it is spindle-shaped and of parasitic food chain is considered then it will be an in inverted pyramid.