3. What is Food Chain?
It is series of organisms each depending on the next as the source of food
is called food chain.
For Example:
Grass Grasshopper Toad Snake Hawk
(Producer) (Primary) (Secondary) (Tertiary) (Quaternary)
4. In the food chain, there are producers and
consumers.
Producers are organisms that produce their
own food with the use of sunlight, carbon
dioxide and water from the soil. This process is
known as Photosynthesis.
Consumers are organisms that feed on plants
or other animals for energy.
5. Types of consumers
The consumers are also categorized into four groups:
Primary consumers: are usually herbivores, feeding on plants,
herbs and fungus.
Example; grasshoppers.
Species that eat only plants, herbs and fungus are called
herbivores.
Secondary consumers; on the other hand, are mainly carnivores,
and prey on other animal. Example; toads.
Species that eat other animals are called Carnivores.
6. Tertiary consumers; are those consumers that get
energy directly from the secondary consumers.
Examples; snakes.
Quaternary consumers; are those consumers that get
energy from tertiary consumers. Examples; hawks.
Note:
A food chain will be
complete without
quaternary consumer.
