Chapter 1 : Food and where does it come from Notes


Why do we need Food

  • We know that all living things be it plants and animals need food and water to live on.
  • We need food because food gives us energy.
  • Food we eat gives our body essential nutrients to help us grow and heal when we are injured or we are ill.
  • Thus food keeps us healthey and provide us essential nutrients to fight diseases.
  • To prepare a food we need different kinds of ingredients like to cook vegetable curry we need different kinds of vegetables, salt, spices oil and so on

Sources of Food

  • Plants and animals are the two sources of our food materials
  • Milk, egg, meat, chicken, fish, prawn, beef, pork etc. are the food products that we get from animals
  • Grain, cereals, vegetables and, fruits comes from plants and plants products
  • We eat leafy vegetable, fruits, and some parts of plants like stem and roots.

What are ingredients?

Ingredients are the materials required to prepare the dish we consume as food.
Example
To prepare vegetable curry, we need different kinds of vegetables, salt, spices, oil

What is Edible?

The substances which we can eat.
Some plants have two or more edible (eatable) parts. Seeds of mustard plants give us oil and the leaves are used as a vegetable

What is Nectar and Honey

Honey bees collect nectar from flowers, convert it into honey and store it in their hive. Flowers and their nectar may be available only for a part of year so, bees store their nectar for their use throughout the year

What is Sprouted Seeds

The germinating seeds at the initial stages when a white structure has grown out of the seed are called Sprouted seeds
How to prepare them
Take some dry seeds of moong or Chana. Put a small quantity of seeds in a container filled with water and leave this aside for a day. Next day, drain the water completely and leave the seeds in the vessel. Wrap them with a piece of wet cloth and set aside. Next day you will white structure has grown out it.These are sprouted seeds. You can eat them as it is or boil them and eat. They are very healthy

Different Type Of Animals

Herbivores
Animals which eat only plants and plant products are called herbivores. For example: Elephant, rabbit, horse, Cow etc.

Carnivores
Animals which eat other animals are called carnivores. For example: Lizard, Lion, tiger, crocodile etc.

Omnivores
These animals eat both plants and animals. For example: Dog, cat, crow, etc.


What are Scavengers

The animals that eat flesh of dead animals. They help in cleaning the environment. Scavengers have an important role to play in the food chain. They keep an ecosystem free of the bodies of dead animals and their decaying flesh. Scavengers break down this organic material and recycle it into the ecosystem as nutrients. For Example Vultures who are scavengers, only eat the bodies of dead animals.
For more knowledge visit https://www.nationalgeographic.org/encyclopedia/scavenger/ (a must read article)

Food where does it comes from Mind Map

food where does it come from mind map

This mind map is about the types of nutrients our food provides us and what happens when we are dificient in these nutrients.

Check your Knowledge

Fill in the blanks
1. _____ and animals are the two sources of our food materials
2. ______are the materials required to prepare the dish we consume as food.
3.Honey bees collect __________________ from flowers, convert it into honey and store it in their hive.
4. _____break down this organic material and recycle it into the ecosystem as nutrients.
5. The process by which seeds shoot out small white structures as way of growth is called ______.
6._____ is substance that is found in the cell walls of a number of plants.
7. ____ is defined as a chemical substance that helps in bringing about changes to certain other substances without undergoing any changes in themselves.

Check your Answers

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