Autotrophs
Make their own food
Are the base of the food chain
Are primary producers
All of the above
In an ecosystem, there is flow of energy at different trophic levels. This is as follows :
$A$ : Detrivores and decomposers hold up a part of nutrients contained in detritus.
$R$ : Immobilised nutrients cannot be available for solubilisation after the death of saprotrophs.
What is maximum in a pond-ecosystem
In ecological pyramid the base always represent the $...A...$ and the apex represents $...B...$ Here $A$ and $B$ represents
Primary producer of an ecosystem is