Materials returned to environment in form of
a) inorganic form
b) organic form
c) both a and b
d) none of these
All organism die and become…………
a) soil
b) detritus
c) both a and b
d) none of these
Materials are………………..in ecosystem
a) recycled
b) not recycled
c) not changed
d) none of these
……….. belong to first trophic level.
a) Consumers
b) Producers
c) Saprobes
d) none of these
……..form the secondary trophic level
a) primary consumers
b) secondary consumers
c) tertiary consumers
d) none of these
The major feeding levels are called….
a) niche
b) species
c) trophic level
d) all of these
