Question

In pond ecosystem, the shape of pyramid of number is
A. Linear
B. Irregular
C. Upright
D. Inverted

Answer 1

Hint:-Ecological pyramid is an energy pyramid, where it is the graphical representation of the
biomass in a given ecosystem, it mainly tells about that how much energy is mainly retained by
absorbing from sunlight and stored in the form of food.

Complete step-by-step solution:-
Pyramid of energy mainly tells about the productivity, which means that how much of energy is
transferred from one trophic level to another trophic level.
Biotic components of the pond ecosystem.
The biotic components of Pond ecosystem are various living organisms, which include
Producers: Producers in the pond ecosystem are divided into two types, they are phytoplankton: this
are microscopic producers or autotrophs, examples are spirogyra, zygnema, etc and Macrophytes: this
are large plants which manufactures large amount of food in the pond, examples are : hydrilla, pistea,
etc.
Primary consumers: This are aquatic organisms, which mainly depend on the producers of the aquatic
life such as zooplankton, and Molluscs, beatles, cyclops.
Secondary consumers: This mainly depends on the herbivores for their food, examples are insects, fish,
crabs, frogs, etc.
Tertiary consumers: They depend on both plants and animals for their food, they are omnivores,
examples are large fishes and frogs.
Decomposers: Most of the decomposers are saprophytes, they may live in the sand layer beneath water,
where most of the bacteria and fungi like asparagus are decomposers.
In the pond ecosystem, ecological pyramids are of three types, they are pyramid of biomass, pyramid of
numbers and pyramids of energy, whereas the energy pyramid is always upright in the pond ecosystem.
So, the correct option is C.

Note:- Other ecological pyramids such as pyramids of number and pyramids of biomass in the pond ecosystem are always inverted because, in the ponds the number and biomass of the consumers are more in number than the producers.