It is usually a plant. A herbivore or omnivore devours the plant, and a predator eats the herbivore/omnivore, starting and ending a food cycle, also called a food chain. Also, the sun grows the plant in which the animal eats. The first organism in a food chain is a plant or a organism that can photosynthesise. or... There is not a first organism in the food chain! :-)
a what?
Bacteria would always be the first link in a food chain. This is simply because it is so small and is, essentially, everywhere.
Plants.
an organism that feeds on others in food chain
what level of the food chain at which an organism is found is known as its?
The lowest organism on a food chain is the primary producer which occupies the first trophic level
Every food chain necessarily begins with an organism that doesn't eat any other organism (if it did eat another organism, it would not be the beginning of the food chain) which is technically known as an autotroph. We are generally familiar with organisms that conduct photosynthesis, although that is not the only kind of autotroph; there are also bacteria which metabolize minerals coming from underwater vents, which live symbiotically in vent worms.
an consumer
There not. The producers are always first so they can produce for the consumers:)
The arrows in a food chain indicate the direction of energy flow from organism to organism.
food chain
True. The loss of an organism at the bottom of a food chain can have cascading effects on all organisms in the chain. This can disrupt the balance of the ecosystem and impact the entire food web.