Write a short note on pyramid of numbers and pyramid of biomass.

(N/A) $1$. Pyramid of Numbers: It represents the number of individual organisms at each trophic level in an ecosystem. It can be upright (e.g.,grassland ecosystem),inverted (e.g.,tree ecosystem where one tree supports many birds),or spindle-shaped.
$2$. Pyramid of Biomass: It represents the total dry weight of living organic matter (biomass) at each trophic level. It is generally upright in terrestrial ecosystems but can be inverted in aquatic ecosystems (e.g.,phytoplankton biomass is less than zooplankton biomass at a given time).