CBSE Class 6 Science Food Where Does It Come From Worksheet Set A

Learning Objectives
1. Food provides energy and keeps the body fit and healthy.
2. We use a variety of ingredients to prepare food.
3. Food can be obtained from plants and animals.
4. Plant sources are cereals, pulses, fruits, vegetables, oil, seeds, etc.
5. Animal sources are milk, egg, meat, fish, etc.
6. There are three kinds of animals, herlivores, carnivores and omnivores.
7. Each animal is dependent on either plant or another animal for food.
8. A series of plants and animals depending on each other forms the food cycle.
9. Balance of nutrients in nature is necessary.

To keep a car engine running properly, it should be suplied with right amount of fuel and oxygen. Similarly to keep our body working properly, it must be supplied with right amount of right chemicals in food. These chemical substances in food that our body needs is called nutrients.

Functions of Food

Food has 3 main functions :
• It provides energy for various activities of the body.
• It helps the body to grow and replace old cells.
• It protects the body from various diseases and keeps it fit and healthy.

We eat different kinds of food, we eat grains, pulses, vegetables, fruits, fish, eggs, meat and different dairy products. Different food contain different nutrients. Some nutrients help us grow, some give energy and some help in fighting against diseases.
India is a vast country and people in different regions cook different dishes. A basic dish like boiled rice contains only rice and water. A vegetable pulao/ biryani contain rice, vegetables, spices, water, salt and oil. It has number of ingredients. These ingredients come from two sources – plants and animals.

SOURCES OF FOOD

Food from plants : Green plants prepare their own food with the help of carbondioxide, water and sunlight by the process of photosynthesis. Green plants are therefore called producers. They prepare some extra food than they need. This extra food is stored in various parts of the plant.

PLANTS PARTS THAT ARE EATEN

Roots : We eat roots of carrot, radish, sweet potato and beetroot. In Rajasthan roots of Khejri tree is eaten when the crops foil. It is considered to be very nutritious.

Stem : Some plants like potato, onion and ginger store food in their stems. Banana shoots and lotus stem are also eaten.

Seeds : All the cereals like rice, wheat, maize and pulses like dentils, gram, moong are seeds. Pea is also a seed. The cereals give us energy and pulses are rich sources of proteins that help in growth. We also get oil from seeds of mustard and sunflower.

Leaves : Some common leaves that are eaten by people are spinach, cabbage, coriander, mint, neem, etc.

Flowers : We eat cauliflower and broccoli. Flowers of plants like drumstick, banana and pumpkin are eaten by people in some parts of India. Rose petals are used to make rose water (gulabjal) and a sweet called gulkand.

People of Assam & West Bengal make delicacies out of this.

FOOD FROM PLANTS
Roots                                      Fruits
Pic of radish, carrot turnip       (Common fruits)
Stem                                       Vegetables
Onion, Potato, Sugarcane       (Common veg)
Leaves                                    Oil
Spinach, Cabbage,                  Methi Mustard, Ground nut, Sunflower
Flowers                                   Seeds
Cauliflower, Broccoli,               Lotus Wheat, Rice, Pea

Fruits : Common fruits are mango, apple, banana, orange, litchi, papaya, guava, grapes, etc. These are rich sources of vitamins and minerals. They also provide water and roughage.

Vegetables : Common vegetables are onion, potato, radish, carrot, spinach, methi, tomato, brinjal, etc.
Vegetables and fruits are good sources of vitamins and minerals. Both keep us healthy and prevent us from deficiency diseases.

Sugar : Food is incomplete without sugar. We get sugar from sugarcane & beetroot. Sugarcane is stem while beetroot is root. Sugar gives energy

Oil : Oil is the medium of cooking. We get oil from seeds of mustard, sunflower, soyabean, cotton, coconut and groundnut.

Spices : Spices add flavour to the food. Different parts of plants are used as spices. Ginger (Adrak), Coriander (Dhania), Fennel (Saunf), Thyme (Ajwain), Cumin (Jeera), Fenugreek (Methi), Clove ( Laung), Cardamom (Elaichi), Nutmeg (Jaiphal), etc.

Sprouts : Sprouted seeds of moong, chikpea (Bengal gram) is very nutritious. Sprouting is done by soaking seeds in water and then draining the water after about 7-8 hour. Then they are left overnight to germinate. Sprouts can be eaten raw as well as cooked. Sprout provide instant energy and are high in protein.

Animals as a source of food
Animals also provide us food in the form of milk, meat, fish, eggs and honey.

Milk : Milk is rich in proteins. It is very beneficial to children and elderly.
Main milk yielding animals are cows, sheep, buffaloes, goat, camel, yak etc.
Such animals are called Milching animals.
Milk is a complete food. It is rich in Calcium and is required for bones and teeth. Products made from milk are known as dairy products.

(i) Paneer (Cottage Cheese) : It is prepared by adding vinegar or lemon to milk. This process is called curdling of milk.

(ii) Cheese : These are made from curdled milk of cow, goat, sheet or buffalo.

(iii) Cream : It is made by collecting the top fatty layer of milk.

(iv) Butter : This is made by churning fresh creams.

(v) Ghee : When butter is heated and the solid matter is removed, ghee separates out.

(vi) Curd : Small amount of milk is added to warm milk and left for sometime. The bacteria (Lacto bacillus) helps in setting the milk. It is a microorganism.

Meat : The main sources of meat are goat, pig, sheep, poultry. Birds like hen, duck, turkey also give meat. Meats are rich in proteins.
An egg laying hen is called layer and hens reared for chicken meat is called broiler.

Egg : Different kinds of eggs
Egg are mainly obtained from hens and ducks.

Fish : Fish is a good source of animal protein. It is highly digestible. Fishes may be fresh water or sea water fish. Both are equally good Cod liver oil, obtained from fish is rich in vitamin D.

Honey : It is obtained from bees (insects). It is not only nutritious but also has medicinal value. Honeybees collect nector from flowers and store in their hive.
Honey is used to cure sore throat and cold.

A Balanced Diet
It is important that we consume all nutrients, but it is equally important that we consume them in adequate quantity. This makes our diet a balanced diet. "A balanced diet is one which contains all the nutrients in proper amount." People of different age need different nutrients in different quantities. Growing children need more proteins for muscle growth and repair of cells of all the food items, milk is considered complete food. It has vitamins, minerals and protein.

Cooking of Food
We cannot eat food like grains, cereals, meat, fish etc without cooking. Cooking helps in following ways :
1. It makes food edible.
2. It makes food soft, easily chewable and digestible.
3. It improves tastes of food.
4. It kills germs and other microbes found in raw food.

Food habits of animals : Animals cannot prepare their own food. They depend directly or indirectly on plants for their food. Different animals eat different kinds of foods. Based on their feeding habits, animals can be divided into three groups :

Herbivores : These are animals that eat plants. e.g. are cows, deer, horses, buffaloes.
Herbi + vores → plant eater
These animals have sharp, cutting teeth in front and flat grinding teeth at the back.
• Squirrels have sharp front teeth to gnaw food items like nuts.
• Cows and Buffaloes have a strange habit of eating. They graze grass and swallow the food without chewing it. Later, they bring it back to the mouth and chew it properly this is called 'Chewing the cud'.
• Elephants are also herbivores. They have largest teeth on the planet! the tusks but these are not used for chewing. They have four massine molars, one in each side of both jaws, that are used for grinding food.

Carnivores
Carni + vores → meat eater 
These are animals that eat flesh of other animals. eg. Lions, Tigers, Wolves, Dogs, Snakes, Eagles, Vultures.
• These animals have strong, pointed and sharp teeth. The birds have pointed beak to tear the flesh. [Snakes have tiny teeth which are used to swallow the prey as a whole.]

These are also omnivores.
Omnivores have different types of teeth that help them to eat both plant parts and meat

Scavengers : Some animals eat dead bodies of animals and help in keeping the environment clean.
E.g. crows, jackals, hyenas, vultures.

Parasites : These are small animals that depend on other living animals. E.g. mosquito, roundworm, tapeworm, fleas, leeches.
Mosquitoes have long sharp pipe through which they suck blood.

Decomposers : Bacteria and fungi help in decay of dead organic matter. They help in maintaining the balance of nutrients in nature.

Health corner : Some mushrooms are good sources of proteins.

Food chain : In nature there are large number of organisms. They are all dependent on one another. One organism eats another animal and in turn is eaten by a third animal. Thus there is a link between the various organisms based on their food requirements. The whole cycle of who eats whom forms the food chain.

Food chain : Grass → grasshopper → frog → peacock → snake
An Example of food chain

A typical food chain in a pond is :
Algae (small plants) → small fish → large fish
All animals are dependent on green plants for food either directly or indirectly.
Plants are the producers and are called Autotrophs.
Food Habits of People of different regions of India.

(i) North India : People of Punjab, Haryana, Rajasthan, Himachal Pradesh grow lot of wheat, so they eat chapatis, paranthas, pulses and drink lassi. They have lot of dairy products in their diet.

(ii) East India : In Bihar, Odisha, West Bengal, Assam people mainly eat rice and fish. Odisha and West Bengal produce lot of fish and sea food.

(iii) West India : In Maharashtra, Goa and Gujarat, people consume lot of fish and rice. They also have dhokla, pulses and groundnut. They use cotton oil.

(iv) South India : Rice in grown in plenty in this region so poeple eat rice, fish and sea food. Their favourite items are idli, dosa, sambhar, coconut chutney. Coconut oil is used in cooking.

KEYWORDS

Food : It refers to a substance that provides energy and material for growth and repair.

Nutrient : A substance that an organism obtains from food to get energy and material for growth and repair.

Ingredients : Refers to different materials that are needed to prepare a food item.

Herbivore : An animal that eats plants and plant products.

Carnivore : An animal that eats other animals.

Omnivore : An animal that eats both plants and animals.

Autotrophs : Green plants that manufacture their own food.

Heterotrophs : Animals that are dependent on plants and other animals for food.

Milch animals : Animals that provide milk.

Microorganisms : Tiny organisms that can be seen only with the help of microscope.

CHAPTER – FOOD: WHERE DOES IT COME FROM?

Q1. Fill in the blanks:

1. The main source of our food is ____________and _____________.

2. Bees store _______________in their beehive.

3. ______________ and______________ are foods obtained from roots of plants.

4. A cow eats only plant products and so it is called a _______________.

5. Pumpkin is the ______________ of a plant which is used as vegetable.

6. The edible plant part in spinach is the______________.

Q2. Give one word for each of the following:

1. Animals that eat only plants __________________

2. Animals that eat both plants and animals _________________

3. Animals that eat only animals ______________________

4. An edible root ______________

5. An edible stem ______________

6. An edible leaf _______________

7. Germinated seeds______________

Q3. Choose the correct answer:

1. Food :
a) Gives us energy
b) Helps in growth
c) Repair body parts
d) All of these

2. _______________ is not a milk product.
a) Pizza
b) Curd
c) Cheese
d) All of these

3. An example of complete food is:
a) Carrot
b) Milk
c) Pulses
d) Fish

Q4. Name the parts that we eat in each case of the following plants:

FILL IN THE BLANKS

1. The sweet juice of flower is called ____________________

2. The eatable parts of plants are called _____________________ parts.

3. We get oil from the ____________ of mustard plant.

4. The main sources of our food are __________________ and _________

NAME THE FOLLOWING

1Two herbivores. ___________________ __________________

2 Two carnivores ____________________ __________________

3Two omnivores ____________________ __________________

4 Two food items we get from animals___________________ ___________________

5 Two leafy vegetables ___________________ _______________

6 Two plants whose stem is edible _______________ _________________

7 Two plants whose root is edible ________________ _______________

TRUE OR FALSE

1. Human beings and bears are omnivores . _______________

2. All plants are edible . ___________________

3. Some ingredients are common for different food items . ______________

EXTRA QUESTIONS

1. Describe how can we make sprouted seeds ? ( 5 m)

2. How is honey produced ? ( 2 m )

3. Name any two plants which have two or more edible parts . ( 2 m )

4. What are the main sources of food ? Name some food items from these sources ( 2 m

5. Name any five milk products. ( 2 m )

DEFINE THE FOLLOWING

1 Herbivores 2 Carnivores 3 Omnivores 4 Edible parts

DISTINGUISH BETWEEN

Herbivores , carnivores and omnivores

Q1) Why does an organism need food?

Q2) Why is glucose given to sportspersons?

Q3) Why do we cook food?

Q4) Why is it necessary to drink about 1.5 litres of water everyday?

Q5) Why water is needed for our body?

Q6) What are the sources of food?

Q7) Name the food products obtained from animals?

Q8) Name some animals which give us milk?

Q9) Name any two products that can be made from milk?

Q10) Which parts of a mustard and banana plants are edible?

Q11) List the various edible parts of the plants, mention some examples also.

STEMLEAFFLOWER

FRUIT

SEED

Q12) Classify the following as herbivore, carnivore or omnivore.

cows, goats, horses, crow, human being, cockroach, giraffes, parrot, squirrel

crocodile, shark, tigers, snake, bears,

Q13) Where does honey come from?

Q1. Fill in the blanks:

1. The main source of our food is ____________and _____________.

2. Bees collect ______________ from flowers and convert it in to _______________.

4. Pumpkin is the ______________ of a plant which is used as vegetable.

5. The edible plant part in spinach is the______________.

Q2. Give one word for each of the following:

1. Animals that eat only plants __________________

2. Animals that eat both plants and animals _________________

3. Animals that eat only flesh of other animals: ______________________

4. An edible root ______________

5. An edible stem ______________

6. An edible leaf _______________

Q4. Name the parts of the plant that we eat in each case of the following plants:

sno Name Plant part

1 Radish

2 Carrot

3 Onion

4 Potato

5 Pea

6 Gram

7 Mango

8 Rice

5. Answer the following questions?

1. What are sprouted seeds?

2. What are ingredients?

3. Draw the diagram of a complete plant and label its parts?

Q1. Fill in the blanks:

1. The main source of our food is ____________and _____________.

2. Bees store _______________in their beehive.

3. ______________ and______________ are foods obtained from roots of plants.

4. A cow eats only plant products and so it is called a _______________.

5. Pumpkin is the ______________ of a plant which is used as vegetable.

6. The edible plant part in spinach is the______________.

Q2. Give one word for each of the following:

1. Animals that eat only plants __________________

2. Animals that eat both plants and animals _________________

3. Animals that eat only animals ______________________

4. An edible root ______________

5. An edible stem ______________

6. An edible leaf _______________

7. Germinated seeds______________

Q3. Choose the correct answer:

1. Food :
a) Gives us energy
b) Helps in growth
c) Repair body parts
d) All of these

2. _______________ is not a milk product.
a) Pizza
b) Curd
c) Cheese
d) All of these

3. An example of complete food is:
a) Carrot
b) Milk
c) Pulses
d) Fish

Q4. Name the parts that we eat in each case of the following plants:

FILL IN THE BLANKS

1. The sweet juice of flower is called ____________________

2. The eatable parts of plants are called _____________________ parts.

3. We get oil from the ____________ of mustard plant.

4. The main sources of our food are __________________ and _________

NAME THE FOLLOWING

1Two herbivores. ___________________ __________________

2 Two carnivores ____________________ __________________

3Two omnivores ____________________ __________________

4 Two food items we get from animals___________________ ___________________

5 Two leafy vegetables ___________________ _______________

6 Two plants whose stem is edible _______________ _________________

7 Two plants whose root is edible ________________ _______________

TRUE OR FALSE

1. Human beings and bears are omnivores . _______________

2. All plants are edible . ___________________

3. Some ingredients are common for different food items . ______________

EXTRA QUESTIONS

1. Describe how can we make sprouted seeds ? 

2. How is honey produced ? 

3. Name any two plants which have two or more edible parts . 

4. What are the main sources of food ? Name some food items from these sources 

5. Name any five milk products. 

DEFINE THE FOLLOWING

1 Herbivores 2 Carnivores 3 Omnivores 4 Edible parts

DISTINGUISH BETWEEN

Herbivores , carnivores and omnivores

I) Fill in the blanks :

1. ___________________________ are substances from which an organism derives energy and materials for its growth and maintenance.

2. _________________________ is produced by honey bees from the nectar of flowers.

3. _________________is an antiseptic and is easily digestible .( )

4. The egg shell is made of ______________________

5. Animals which provide meat and egg are called ____________________________

II) Write True or False :

1.Cooking makes food items soft and easily digestible . [ ]

2. Menu is list of dishes/ food items saved at a meal. [ ]

3. Tea and coffee are common beverages.[ ]

4. The rearing of honey bees on a large scale is known as pisciulture.[ ]

5. The place used for the rearing of honey bees is called an “apiary”.[ ]

III) Name the following :

1. Two milk-yielding animals.

2. Two poultry animals.

3. Two fresh water fishes.

4. Give two examples of omnivores.