2. What is the food chain?
01
Links of the food chain
02
Importance of the food chain
03
Effects of Human activities on food chain
04
Contents
3. What is the food chain?
01
• The energy flow from one trophic level to the other is know as a food chain.
• The food chain describes how life works, indicates the role of each living being on the
planet.
• It help us understand that how tiny an organism may be, it fulfills an elementary task for
the biological stability.
4. Levels of the
food chain
02
The level of the food chain are the hierarchical levels in which each
group of organisms is found.
5. • It involves one organism at each trophic level.
Primary Consumers – eat autotrophs (producers)
Secondary Consumers – eat the primary consumers
Tertiary Consumers – eat the secondary consumers
Decomposers – bacteria and fungi that break down dead
organisms and recycle the material back into the
environment
6. Importance of the
food chain
03
• The importance of the food chain lies in the transfer of nutrients from one level to
another for maintaining the balance of ecosystems.
• All organisms depend on others for their survival, which means that the existence of a
certain group of living beings keeps other species alive.
7. What happens if a level of the food
chain disappears?
1
There will be an overpopulation of the previous level, since the
consumers of the next level will have disappeared.
2
Not only will a single higher level disappear, but so will the levels
following that one and so on.
9. 1. Deforestation
If we cut more trees, producers
will be lost, which will effect the
population of grasshopper which
in turn will affect all of the above
links in the food chain.
10. 2. Mining
Lot of mining activities in the
particular area, depletes the
decomposers present in the soil.
And because of this nutrients
which are important for the
growth of plants(Producers)
does not go back to the soil and
thus effect the primary link.
This in turn, will affect all of the
above links in the food chain.
