6th Class Science Food: Where Does It Come From? Food


Category : 6th Class




Food is a substance eaten by the living organisms in order to remain alive. Fruits, vegetables, eggs, meat, milk, etc. are the examples of food.


Sources of Food

Plants: Foods like cereals, pulses, fruits, vegetables, etc. are obtained from the plants.

Animals: Food like meat, milk, eggs, honey, etc. are obtained from animals.


Producers and Consumers

All living organisms has been broadly classified into two groups: producers and consumers.

Producers: All the green plants make their own food, therefore, green plants are called producers.


Consumers: Animals consume the food prepared by green plants, therefore, animals are called consumers.

Image result for animals photos to one pitures



Types of Consumers

Consumers have been classified in the following groups on the basis of their food habits:



The animals that eat only plants or plant products, are called herbivores. Cow, buffalo, goat, elephant, horse, rabbit, camel, etc. are the examples of herbivores animals.



The animals that eat only other animals are called carnivores. Tiger, lion, cheetah, wolf, snake, etc. are the examples of omnivores animals.



The animals that eat both plants and animals are called omnivores. Man, bear, dog, crow etc. are the examples of omnivores animals.




The animals that eat dead and decaying bodies of other animals are called scavengers. Vulture, hyena, etc. are the examples of scavengers.



These are organisms such as bacteria and fungi that break down the dead remains of plants and animals.



The animals that live in or on the other animals for their survival are called parasites. For example, mosquitoes, flees, leeches, etc.

Related image


Components of Food

The food that we eat is composed of carbohydrates, fats, proteins, vitamins, minerals, water, and roughage.

Functions and Sources of different components of food are given below:




Name of the Nutrient




Energy giving food

Carbohydrates Energy giving food

Rice, potato, wheat, sugar                              

Provides energy   

Energy giving food

Fats (energy giving food)    

Butter, ghee, oil, cheese        

Gives more energy as compared to  carbohydrates    

Protective food    

Vitamins and Minerals (protective food)                   

Fruits and vegetables   

Required for  normal growth and   development                

Body building food

Proteins (body building food)    

Milk, eggs, meat, fish, soyabeen   

Helps in building and repairing of body



Water, fruits and vegetable rich in water

Helps in digestion


Roughage (fibres)

Fruits and vegetables

Helps in proper digestion

Balanced Diet

An adequate amount of nutrients, water and roughage are essential for proper functioning of our body.

'The diet, which contains all the nutrients, water and roughage in adequate amount, is called balanced diet'.


Deficiency Diseases

The people, who do not get all the nutrients in required amount, suffer from deficiency diseases.


Look at the following table:


Deficiency diseases



Lack of proteins


Lack of proteins and carbohydrates

Night blindness

Lack of vitamin A


Lack of vitamin


Lack of vitamin C


Lack of vitamin D and calcium


Lack of iodine


Lack of iron


Other Topics

Notes - Food

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