This document discusses food chains and food webs. It defines a food chain as the transfer of energy from primary producers like plants through a series of organisms as each is eaten. Food chains can be grazing or detrital. A food web shows the complex network of interconnected food chains within an ecosystem. It demonstrates how energy flows from producers to primary, secondary and tertiary consumers. The document presents figures illustrating general and specific examples of terrestrial, aquatic, soil and forest food webs.

1. FOOD CHAIN AND FOOD WEB
Guided By:
Chethana R
Yuvaraja's college Presented By:
Inchara R
2nd Semester
Molecular Biology
26/03/2018

2. CONTENTS• Introduction
• Food Chain
• Types Of Food Chain
• Significance of Food Chain
• Food web
• Different Forms Of FoodWeb
• Significance Of F0odWeb
• Conclusion
• References
• Acknowledgement

4. Food Chain
(a) Energy Flow
Fig 1: Movement Of Energy
Solar Energy Energy
Transfer
Energy
Transfer
Degradation Energy
Transfer

5. Fig 2:Tropic Structure of Ecosystem
(b) Tropic Level

6. Types Of Food
Chain
Fig : 3 GFC
(i)

7. Fig 4: DFC
(ii)

8. FoodWeb
Fig : 4 General FoodWeb

9. Fig : 5 Soil FoodWeb
Different Forms Of Food Webs

10. Fig : 6 Aquatic FoodWeb

11. Fig : 7 FoodWeb In a Forest

12. Fig : 8 A Food Web In A Grassland With 5
Possible Food Chain

13. Fig : 9Terrestrial & Aquatic Food Chain

15. REFERENCES
• https://www.slideshare.net/mobile/saksheebhaiswar/food-chainfood-web-
and-ecologicalpyramids
• www.youarticlelibrary.com/food/types-of-food-chains-found-in-an-
ecosystems-grazing-and-detritus-food-chain/23275

16. ACKNOWLEDGEMENT
I would like to thank the dept. of Molecular Biology for providing
me this opportunity to present the seminar.
I would also like to thank my guide Chethana ma’am for her
valuable guidance.
Thank you one and all.