Plant Insects Fish Frog Bear People Food Chain and Food Web Definition of Food Chain Types of Food Chain Definition of Food Web You will be able.

Plant Insects

Fish

FrogBear

People

Food Chain and Food Web

Definition of Food Chain Types of Food Chain Definition of Food Web

You will be able to learn-

The cyclic transfer of food from producer to highest consumers and the relation of food and its consumers are known as food chain. Usually two types of food chain are found in nature:

1. Grazing or Predator Food Chain: It starts from the producer, goes to grazing herbivorous and gradually moves from the smaller carnivores to the bigger. It is known as grazing or predator food chain. E.g. Grass deer tiger.

Predator and Prey

Prey Predator

2. Saprophytic or Detritus Food Chain: Decomposers split up dead bodies of plants and animals, these are taken as food by some animals and then the decomposers are converted into foods of other animals. Such as -

Dead body decomposer Amoeba Hydra, zooplankton fish.

Different types of Food Chains

Different types of Food Chains

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More Food ChainMore Food Chain

ProducerProducer ((trapped sunlight & trapped sunlight & stored food)stored food)

11stst order order ConsumeConsumerr

22ndnd Order Order ConsumConsumerer

33rdrd Order Order consumconsumerer

44thth Order Order ConsumConsumerer

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More Food ChainsMore Food Chains

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Food WebFood Web

Food WebFood Web

In a particular ecosystem, more than one food chains exists. When the members of different food chains become interrelated, then it is called food web.

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Feeding RelationshipsFeeding Relationships

Energy flows Energy flows through an through an ecosystem in ecosystem in oneone direction direction

from from producers toproducers to various levels various levels of of consumersconsumers

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Question and answering session

A Food Chain

Plant Insects

Fish

FrogBear

PeopleHome work: Write down the consumers label