1. POWERPOINT PRESENTATION 2. WELCOME 3. Name of the Student : RENJINI.L Name of the optional subject : NATURAL SCIENCE Name of the TOPIC : FOOD CHAIN Candidate code : 13366015 Directed by : Dr. SHARMILANAZEER(Lecture in naturalScience) Name of the College : IQBAL COLLEGEPERINGAMMALA 4. CONTENTS I. Producers II. Consumers1) Primary consumers2) Secondary consumers3) Teritary consumers III. Decomposers 5. INTRODUCTIONIn an ecosystem there are food relation betweenorganism. The process of repeated eating and beingeaten is referred to as the food chain. The food chainconsists of producers. Consumers and decomposers.In other wordsThe sequence of living organism in a community inwhich one organism to transfer food energy is called afood chain. 6. ProducersProducers are the organism whichcan prepare their own foodEg : Green plants 7. CONSUMERSThose organism which consumefood prepared by producers arecalled Consumers. The consumersdepends on producers for food,directly or indirectly. 8. All the animals are consumers.Consumers can be further dividedinto three groups.Herbivores, Carnivores AndOmnivores 9. PRIMARY CONSUMERS OR HERBIVORESThose animals which eat only plants arecalled Primary Consumers 10. SECONDARY CONSUMERSThe organism which directly depend onPrimary Consumers for food is calledSecondary Consumers 11. TERTIARY CONSUMERSWhich feed upon small carnivores arecalled tertiary Consumers 12. DECOMPOSERSThe decomposers help in decomposingthe dead bodies of plant and animals andhence act as a cleaning agent ofenvironment. 13. PICTURE OF FOOD CHAIN 14. directional transfer of energy. Thestudy of food chain in an area orhabitat help us in knowing variousinteraction among differentorganisms and also theirinterdependence. 15. THANK YOU ..