Page 1 - 2. Lesson notes-Food chain and Food web
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SAI International School
Subject- Biology, Class- X
Chapter- Our Environment
Subtopic- Food Chain and Food Web
Module-31
Lesson Notes
FOOD CHAINS AND WEBS
Food chain is a sequence of organisms in a biotic community through which food passes
with members of a step becoming food of the members of the next step of the sequence.
Generalized scheme of nutritional relationships amongst the different
biotic components of an ecosystem
In any given ecosystem, all living organisms are linked in a systematic chain with respect to
their mode of manufacturing food/feeding habits. The interactions among various
components of the environment involves flow of energy from one component of the
ecosystem to other.
Length of food chains
