CBSE Class 6 Science Revision Notes Chapter 1

CBSE Class 6 Science Chapter 1 Revision Notes – Food: Where Does It Come From?

Everything that can be consumed or eaten is considered to be food. It is the most essential component in life as it provides the required nutrition for overall wellness and growth. The notes explain food as a substance that is ingested by human beings and animals to develop and sustain their body. There are different types of foods based on individual requirements that can be consumed at various times of the day. 

According to their lifestyle habits, people consume a variety of food items. Class 6 Science Chapter 1 Notes deliver comprehensive information on food and why it is essential for survival.

Students can refer to Class 6 Science Chapter 1 Notes for an in-depth understanding of the concepts and thereby, score better grades in the examination. Extramarks provides these revision notes that are easily accessible from the website. These notes are prepared  by subject matter experts and adhere to the revised NCERT guidelines and syllabus. 

The topics included in Class 6 Science Chapter 1 Notes – Food: Where Does It Come From? are mentioned below.

Revision Notes for CBSE Class 6 Science Chapter 1 Notes – Free Download

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Food: Where Does It Come From? Class 6 Notes – Free Download

• Food: It is a nutritious item that living beings consume or plants absorb to survive. It is needed for the sustainable development of living organisms.
  Both plants and animals need nourishment that we get from food to survive.

• Applications of food in our body:
  • For producing energy for growth
  • For the body to function properly
  • For wounds to heal
  • For maintaining good health

• Food sources from plants

1. One of the main sources of nutrients is plant roots. Common examples of consumable plant roots include carrots, radishes, and beetroot.
2. Plant stems are also useful for making food. Some examples are potatoes, coriander, ginger, and sugarcane.
3. Plant leaves are used as a food source. Some examples are cabbage, spinach, and onion.
4. Rose and cauliflower are some examples wherein flowers from a plant are utilised in making food.
5. Some plants contain pulpy fruits that can be consumed, e.g., bananas, grapes, and apples.

• Tomato, gourd, brinjal, and beans are some of the fruits used as an ingredient while cooking.

• Almonds, currants, and other nuts, etc.

Food-grade seeds

• Maize (corn), paddy (rice), gram (chana), wheat pulses (dal), green gram (mung), and pigeon peas are consumable.
• Sesame (til), mustard (sarson), and coconut oil are some examples of seeds that are used to make edible oil.
• Food sources from animals 

1. Meat  
2. Eggs 
3. Seafoods like fish, prawns, crabs, etc. 
4. Milk
5. Honey 

• People consume food differently in various parts of India.

1. The main sources of food are plants and animals.
2. Vegetables, spices, cereals, and legumes, are some ingredients that can be derived from plants.
3. Milk, eggs, meat, etc., are some consumable ingredients derived from animals. 
4. The two common dietary sources are salt and water.
5. Animals that only eat plants are herbivores. For example, cows, sheep, and goats.
6. Animals that only consume other animals’ flesh for survival are carnivores.  Some examples are tigers, lions, etc.
7. Animals that rely on both plants and other animals’ flesh for survival are known as omnivores. Some examples of omnivores are bears, foxes, dogs, and other animals.
8. Vegetarians only consume food sourced from plants.
9. Non-vegetarians solely eat foods derived from animals like meat, poultry, and eggs.

Animals that consume dead and decomposing organisms are called scavengers. Some prominent examples of scavengers are hyenas, vultures, etc.

Class 6 Chapter 1 Science Notes: Plant as a Food Part

The primary sources of food for herbivores are obtained from plants that are food grains like maize,  rice, and wheat. Plants provide us with vegetables, fruits, spices, oil, etc. Cereals are grains that are consumed as food. 

Class 6 Science Chapter 1 Notes discusses the various parts of plants that can be consumed as food like stems, leaves,  flowers, fruits,  roots, and seeds.

1. Plant stems as food: A few plants preserve food in their stems. The plant stems are consumed by us. Some examples are potato, garlic, onion, and ginger.
2. Plant roots as food: We consume the roots of some plants. Some examples are carrots, sweet potatoes, radishes, and turnips.
3. Plant leaves as food: Leafy vegetables are filled with several minerals, vitamins, and fibre that give roughage. Some examples are lettuce, cabbage, and spinach.
4. Fruits: Some plants preserve their food in their fruit. Some examples are apples, guava, mangoes, pears, etc. 
5. Seeds as food: Some plants’ seeds are consumed as cereals and spices. Some examples are rice, pulses, maize, and soya bean.
6. At times, different parts of a plant are edible. One common example is the mustard plant. Mustard plants contain two consumable parts. 

• Leafy vegetables are derived from their plant.
• Mustard oil is derived from the mustard plants’ seeds.

Class 6 Science Chapter 1 Notes: All About Sprouts

Seeds that start growing out tiny roots under desirable conditions are known as sprouts. Sprouts are abundant in active glucose as well as  vitamins A, B, and C. This makes the sprouts more nutritious than any food substance. 

The seeds of chana and moong can be transformed into sprouts. The procedure for preparing sprouts is elaborated below. 

1. Take a few dry seeds of chana/moong. 
2. Soak a handful of seeds overnight in water.
3. Filter these seeds from the water by the next day or so during the summer season. 
4. Each seed grows a noticeable little white structure. These are new roots. At this stage, the germinating seeds are known as sprouts. 

Notes of Class 6 Science Chapter 1: Animal Products As Food Items

Animal-based food products include eggs, chicken, fish, and milk. Chapter 1 Science Class 6 Notes also explain the products derived from animals that can be consumed either directly or after processing and transforming into other products like cheese, butter, curd, etc. Cod liver, which is derived from codfish, is rich in vitamin A. Both plants and animals are consumed by human beings. While plants prepare their own food through photosynthesis, animals depend on plants or other animals for food. 

Animals that consume both plants and animals are known as omnivores. Examples of omnivores are human beings, dogs, etc.

Science Class 6 Chapter 1 Notes: Food Producers and Consumers

Class 6 Chapter 1 Science Notes explain the fundamental concept of producers and consumers. Along with this, students need to have an  overview of the process of photosynthesis in which plants prepare their food with the help of some components. 

Green plants make their own food with the aid of photosynthesis. Plants take up energy from the sunlight, absorb water from the soil, and carbon dioxide gas from the air to prepare their food. The green pigment called chlorophyll which is existent in the plant is an important component needed for photosynthesis. 

Glucose is the vital product of photosynthesis. Plants use a substantial part of the glucose produced for their own development and the remaining is preserved in the form of starch in various parts of the plant itself. This is further consumed as food by humans and other animals. Oxygen is one of the most significant end products derived from the process of photosynthesis. 

Plants are the only living beings that can make their own food. Animals are called consumers as they are not capable of making their own food. Animals rely on plants for meeting their food and energy needs. Animals are split into three categories depending on the consumption of foods which are as follows.

• Herbivores – Only plant eaters
• Carnivores – Only flesh-eaters
• Omnivores – Consume both plants and other animals

Class 6 Science Chapter 1 Notes describe all these concepts of food in a concise manner. With the examples given in these revision notes, students can easily grasp the crucial topics of this chapter.