food chain,food web

2.  the sequence of transfers of
matter and energy in the form of food
from organism to organism
Food chain is the sequence of
who eat whom in the biological
community to obtain nutrition

3. FOOD WEB is a series of
multiple, overlapping
food chains.
Food chains intertwine locally
into a food web because most
organisms consume more than
one type of animal or plant.

5. Each step in the flow of energy through an
ecosystem is known as a TROPHIC LEVEL.
As energy moves from one trophic level to the
next, most of the useful energy (90%) is lost as
heat (second law of thermodynamics).
The trophic level of an
organism is the position
it holds in a food chain.

7. The primary
energy
source- SUN
Primary
Producer-
autothrops
Primary Consumer-
Hervibores
Secondary
Consumers
Tertiary
Consumers
Quaternary
Consumers
DECOMPOSERS

9. Thank you for listening…