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• Order in which 
animals eat 
plants and 
other animals. 
• Each part of a 
food chain is a 
link connected 
to other links.
1.) 
Producers 
2.) Consumers 
(a) Herbivores 
(b) 
Carnivores 
(c) 
Omnivores 
3.)
-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.
Deer 
(Herbivores) 
Grass 
(Producer) 
Lion 
(Carnivores)
Plant Insects 
Frog 
Bear
1st order 
Consumer 
2nd Order 
Consumer 
Producer (trapped 
sunlight & stored food) 
3rd 
Order 
consumer 4th Order 
Consumer
Energy flows 
through an 
ecosystem in 
one direction 
from producers 
to various 
levels of 
consumers.
• Food Chain 
– Simple Energy path through an 
ecosystem. 
• Food Web 
– More realistic path through an 
ecosystem made of many food 
chains.
17
Food chain and webs
Food chain and webs

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Food chain and webs

  • 1.
  • 2. • Order in which animals eat plants and other animals. • Each part of a food chain is a link connected to other links.
  • 3. 1.) Producers 2.) Consumers (a) Herbivores (b) Carnivores (c) Omnivores 3.)
  • 4. -Those Organisms Which Produces Food Are Called Producers. -The Example Of Producers Are Green Plants And Certain Blue-Green Algae.
  • 5. - 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.
  • 6. 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.
  • 7.
  • 8. • 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.
  • 9. Deer (Herbivores) Grass (Producer) Lion (Carnivores)
  • 10.
  • 12. 1st order Consumer 2nd Order Consumer Producer (trapped sunlight & stored food) 3rd Order consumer 4th Order Consumer
  • 13.
  • 14.
  • 15. Energy flows through an ecosystem in one direction from producers to various levels of consumers.
  • 16. • Food Chain – Simple Energy path through an ecosystem. • Food Web – More realistic path through an ecosystem made of many food chains.
  • 17. 17