Producers always occupy the first trophic level in any food chain. Why?
Class 10th Chemistry
Asked By Suresh Ram
Since producers are one which introduce energy source or organic food(
food or energy is called trophic) for metabolism and development of the
ecosystem they are placed at first level. They are capable of synthesize
organic matter( Like Glucose) from inorganic source( like CO2, SO2)
with the help of sunlight( as in plants and algae) or by chemical
energy( as in chemo autotrophs).
That's because it's they who provide the basic food to members of the
secondary,tertiary,quarternary & top carnivore levels.That means
that except the top carnivore,all other members of the other trophic
levels will ( not quite essential - especially for carnivores) have to
depend on the first trophic level.If by chance this dies off,then the
others just cannot exist.