Food chain is the pathway along which food is transferred from trophic level to trophic level, beginning with primary producers.. &#149; Rarely are unbranched since several different primary consumers may feedon the same plant species and a primary consumer may eat several species of plants &#149; Feeding relationships are usually woven into elaborate food webs within an ecosystem It is important to distinguish between ecosystem structure (trophic levels) and ecosystem processes (production, consumption,decomposition).
(a primary consumer; may eat; several species of plants &#149) (food; is transferred; from trophic level; to trophic level) (Feeding relationships; are woven; into elaborate food webs; T:within an ecosystem; T:usually) (food; beginning; with primary producers) (several different primary consumers; may feedon; the same plant species)
a primary consumer food Feeding relationships food several different primary consumers
may eat is transferred are woven beginning may feedon
several species of plants &#149
from trophic level to trophic level
into elaborate food webs T:within an ecosystem T:usually
with primary producers
the same plant species