class 6 science chapter 1 food: where does it comes from?

food: where does it comes from?
nutrients
sources of food
plant and animal producs

1. SCIENCE
MANMEET KAUR

2. CHAPTER 1-
FOOD: WHERE
DOES IT COME
FROM?

3. FOOD
•The substance which we eat every day,
containing various edible components that
provide us energy and materials that help
our body to grow and remain healthy are
called food.
•There are two main sources of food: plants
and animals
•Nutrients are the components of food which
are required by our body. Some major
nutrients are: carbohydrates, protein,fats,
vitamins and minerals.

4. INGREDIENTS-THE MATERIALS THAT ARE NEEDED TO
PREPARE A PARTICULARTYPE OF DISH ARE CALLED
INGREDIENTS
Food items Ingredients Source of ingredients
Roti/ chapattiAtta, water Plant (wheat)
Dal Pluses, water, salt , oil,
spices
Plant

5. FOOD SOURCES
•The ingredients of a food item can be obtained
from either plants or animals.
•So there are plant products and animal products.
•E.g., We get rice grains from rice plants.
•Chicken is an animal source of food.
•Items like salt and water make a third category.

6. PLANT
PRODUCTS
•The food products that we
get from plants are called
as the plant products.
•E.g., ginger is the root of a
plant that we use in
cooking.

7. ANIMAL
PRODUCTS
•The food products that we
get from animals are
called animal products.
•E.g. Milk, butter, chicken,
meat, honey etc.

10. KEYWORDS
•Ingredients:Materials needed to prepare a dish or food are called its ingredients.
•Edible parts:Those parts (of a plant) which are eatable are called Edible parts
•Nectar:Sweet juices found in flowers are known as nectar.
•Sprouted seeds:Seeds which grow white thread like structures when soaked in water are
called sprouted seeds.
•Herbivore:Animals which eat plants and plant products like fruits, flowers, seeds, nectar,
etc., are called herbivores.
•Carnivore:Animals which eat other animals are called carnivores.
•Omnivore: Animals which eat both plants and their products, as well as other animals, are
called omnivores.

11. FOOD FROM
PLANTS
Green plants are known as producers because
they prepare their own food. They use light, air
(carbon dioxide), water, and chlorophyll (present
in their leaves) to prepare their food by the
process of photosynthesis.
Different plant parts serve as sources of food for
us. Fruits, vegetables, cereals, and pulses that we
eat are obtained from different parts of a plant.
Roots of plants like carrot, radish, turnip, sweet
potato, and beetroot are eaten

12. Stems of certain plants are eaten. For example, the stem of sugarcane plant is eaten and is also used to
make sugar. The stem and flower of the banana plant is cooked and eaten in different parts of India.
Certain plants have underground stems that we eat. Examples are potato, onion, garlic, and ginger
Leaves of plants like lettuce, spinach, cabbage, coriander, mint, and basil are eaten
Flowers of certain plants like cauliflower, broccoli, and banana are also eaten
Seeds Pulses like mung bean, kidney bean, chickpea, and cereals (wheat, maize, and rice) that we eat are
seeds of plants
Wheat grains are ground to make flour (atta) which is used to make chapattis. Cumin seeds, pepper, and
cardamom that we eat as spices are also seeds of different plants.

15. •Sprouted seeds (or sprouts) of
mung bean and chickpea (Bengal
gram) are very nutritious.
Sprouting involves soaking seeds
and draining the water and then
leaving them till they germinate.
Sprouts can be eaten raw as
salads or cooked.
Fruits and vegetables Plants also
provide us fruits and vegetables

16. FOOD FROM
ANIMAL:
•Animal products like meat, egg, honey,
milk, cheese, butter, and curd are
eaten by human beings.
Meat of animals like goat, chicken, fish,
and prawns is commonly eaten
•Egg Hen’s egg is the most common
bird egg eaten in the world. It is a rich
source of proteins and vitamins. Some
people also eat eggs of goose and
duck.

17. Honey:Honey is a sweet liquid made by bees from the nectar offlowers
Honey is collected from beehives. It is used in cookingand alsohas
medicinalvalue.
Milk:Milk is obtained from animals like cow, buffalo, and goat. Fig’1-8
Honev It is averynutritious food item and is a rich source of proteins.
Milk also contains calcium, whichisrequired for proper bone growth and
nervefunction

18. WHAT DO ANIMALS EAT
Different animals have different feeding habits. Based on their feeding habits, animals can be divided into three groups: herbivores, carnivores,
and omnivores.
Herbivores
Herbivorous animalsor herbivores (herbi, plant; vore, eater) are those that eat only plants and plant products. Cow, deer,
horse, giraffe, squirrel, and butterfly are examples of herbivores.
Carnivores
Carnivorous animalsor carnivores (carni, meat; vore, eater) are those that only eat the flesh of other animals. Lion, tiger,
jackal, vulture, owl, eagle, snake, and spider are examples of carnivores.
Omnivores
Omnivorous animalsor omnivores (omni, all; vore, eater) are those that eat both plants and flesh of other animals. Bear,
racoon, crow, and human beings are examples of omnivores.

20. •1. Do you find that all living beings need the same kind of food?
•No, all living beings do not need the same kind of food. Some animals eat
plants as food, and they are called herbivores. Some animals eat other animals,
and they are called as Carnivores. Some others eat food from plant sources as
well as animals, and such living beings are calledomnivores.
•2. Name five plants and their parts that weeat.
•Brinjal-Fruit
•Groundnut-Seed
•Potato-Stem
•Spinach-Leaves
•Beetroot-Roots

21. EXTRA QUESTIONS
•Q1. Explain the importance of food for living organisms.
Answer:
Food is needed by all living organisms for the following reasons:
•It provides us energy to do various activities.
•It helps in growth.
•It helps in repair and replacement of damaged parts of the body.
•It protects us from infections and diseases.
•Q2.Why should we eat cooked food?
Answer:
Cooked food is easily digested by our body. It also kills harmful germs. Cooking increases the
taste of the food. That is why we should prefer cooked food.

22. •Q3. What is honey? What is its importance?
Answer:
A sweet substance (liquid) prepared by bees from the nectar, i.e., sweet juice collected from
flowers, is called honey.
Honey consists of water, sugar, minerals and enzymes. It is easily digestible and used in
medicines as an antiseptic (which destroys the growth of microorganisms).
•Q4.Explain the terms:
•Herbivores,
•Carnivores and
•Omnivores.
•1. Herbivores: Animals which eat only the plants or the plant products like fruits, flowers, seeds,
nectar, etc., are called herbivores. For example, deer, cow, rat, etc.
•2. Carnivores: Animals which eat other animals are called carnivores. For example, tiger, lion,
etc.
•3. Omnivores: Animals which eat both plants and their products as well as other animals are
called omnivores. For example, human beings, cat, crow, etc.

24. DRAW THE FOLLOWING ON BLANK
SIDE OF YOUR COPY
•Fig1.4 different edible parts of plant (page number-3)
•Draw 5 plant sources of food
•Draw 5 animal sources of food