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• The Order In Which Animals Eat Plants And Other Animals.
• The Food Can Be Transferred From One Organisms To The Other Through Food Chains.
-Those Organisms Which Produces Food Are Called Producers.
-The Example Of Producers Are Green Plants And Certain Blue-Green Algae.
- Those Organisms Which Consume Food Prepared By Producers Are Called Consumers.
- All The Animals Are Consumers.
- If An Animal Eats Grass or Other Green Plants Or Their Products Itself We Say That It Gets The Food From Producers Directly.
- If An Animal Eats The Meat Of Other Animal (Which Eats Grass), Then We Say That It Gets The Food From Producer
Indirectly.
Consumers Can Be Further Divided Into Three Groups
• Herbivores– Eat Only Plants.
E.g.- Cow, Goat, Horse,
Deer.
• Carnivores– Eat Only Other Animals.
E.g. – Lion, Tiger, Frog, Vulture.
• Omnivores– Eat Plants & Animals.– E.g. – Humans, Dog,
Crow.
• 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.
Grass
(Producer)
Grasshopper
(Herbivore)
Frog
(Carnivore)Eagle
(Top Carnivore)
Plant
(Producer)
Worm
(Herbivore)Bird
(Carnivore) Cat
(Top Carnivore)
Algae (Phytoplankton)
(Producer)
Protozoa (Zooplankton)
(Herbivore)
Small Fish
(Carnivore)
Big Fish
(Large Carnivore)
Producer(Trapped Sunlight &
Stored Food)
1st Order
Consumer2nd Order
Consumer
3rd Order
Consumer 4th Order
Consumer
• The Network Of A Large Number Of Food Chain Existing In An Ecosystem Is Called A Food Web.
• The Food Web Has Many Intercrosses And Linkage Among The Various Species (Producers And Consumers) Present In It.
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