Choose correct sentence.
Choose correct sentence.
- A
Except for the deep sea hydro - thermal ecosystem, sun is the only source of energy for all ecosystems on earth of the incident solar radiation more than 50 percent of it is photo synthetically active radiation (PAR).
- B
Plant capture only $10-20$ percent of the PAR and this small amount of energy sustains the entire living world.
- C
All organisms are dependent for their food on producers.
- D
Primary producers in an aquatic ecosystem are zooplanktons.
Similar Questions
Energy requirement for maintenance of body _____ with successively higher trophic level.
Energy requirement for maintenance of body _____ with successively higher trophic level.
Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.
Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.
$A$ : Detritus food chain begins with detritus.
$R$ : Detrivores like fungi and bacteria are major decomposers in such food chains.
$A$ : Detritus food chain begins with detritus.
$R$ : Detrivores like fungi and bacteria are major decomposers in such food chains.
One of the following atoms often limit the primary productivity of an ecosystem
One of the following atoms often limit the primary productivity of an ecosystem
Water plants provide ....... to water animals
Water plants provide ....... to water animals