FOOD-WHERE IT COMES FROM-TEXT

FOOD-WHERE IT COMES FROM

CLASS-VI

CBSE

In this is we going to learn about food variety, food materials and sources, plant parts and animal products as food, what do animals eat?

FOOD VARIETY

What did you eat at home today? Find out what your friend ate today. Did you eat the same kind of food yesterday and today? We all eat different kinds of food at different times, isn’t it?

Food  a fact of life. We all need to eat and drink everyday. To grow, to energy, to be healthy. We need a range of different types of food.

Food we eat- fruits, vegetables, cereals, pluses, nuts, healthy food and junck food. They provide us a lot of carbohydrates, proteins and vitamin.

Fruit is a part of plant which contain seed. fruits are liked and eaten by many people. Fruit helps to stay strong and healthy. They gives us lot of vitamin.

Cereals are rich in nutrients. they  grown from grass type of plants. They are high carbohydrates, proteins, and minerals.We make idli, dosa, rotis and bread.

Pluses are rich in nutrients. They are grown in climber type plants. They are rich in proteins.We make dal, sambar, curry with them.They help us to grow strong.ex:bean, black grams etc.

Nuts are fruits with hard cover shell. sometimes dried seeds are also called nuts. Nuts give us a lot of energy. They are a healthy snack. ex; almonds, chesews.

Think about rice cooked at home. We take raw rice and boil it in water. Just two materials or ingredients are needed to prepare a dish of boiled rice.

On the other hand, some food items are made with many ingredients. To prepare vegetable curry, we need different kinds of vegetables, salt, spices, oil and so on.

Healthy eating means eating a variety of foods that give you the nutrients you need to maintain your health, feel good, and have energy. These nutrients include portein, carbohydrates, fat, water, vitamins, and mineral.

FOOD MATERIALS AND SOURCES

It may be easy for us to guess the sources of some of the ingredients that we listed in Fruits and vegetables, for instance. Where do they come from? Plants, of course! What are the sources of rice or wheat? You may have seen paddy or wheat fields with rows and rows of plants, which give us these grains.

A plant or a part of a plant is used for food is called as fruits and vegetables.

Junk food always consists of extra fats and calories. It is very hard to digest it containing high levels of calories from sugar or fat with little protein, vitamins or minerals.

We need lots of different foods to eat. We eat bread puris, idllis egg and milk in the morning breakfast. We take rice, dal, curry, curd in lunch time. We take chapattis, fruits and vegetables salads a very light food in dinner time.

And we get food items from some animals like milk, eggs, meat, chicken, fish, prawns, beef, pork and such others, which come from animals.

All living thing need food to grow, to energy, to healthy. Eating fruit and vegetables can help protect against some diseases including diabetes. 

PLANT PARTS AND ANIMAL PRODUCTS AS FOOD

 Plants are one source of our food. Plants store food material in different parts such as roots stems, branches, leaves, flowers fruits, seeds etc. We eat many leafy vegetables. We eat fruits of some plants. Sometimes roots, sometimes stems and even flowers.

Roots of some plants produces vegetables like carrot, raddish, beetroot, etc.

some vegetables such as sugarcane, potato, onion, ginger are the food made by the plant is stored in stem.

 In some plants such as cabbage, spinach and garden leaves the food is stored in leaves.

Some fruits are fleshy and juicy to eat. We get fruits such as mangoes, grapes, banana are the food made by the plant stored in fruits.

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

Can you think of the different parts of a banana plant that are used as food? Think of more examples where many parts of a single plant are used as food.

Bees collect nectar (sweet juices) from flowers, convert it into honey and store it in their hive.

Flowers and their nectar may be available only for a part of the year. So,

bees store this nectar for their use all through the year. When we find such a beehive, we collect the food stored by the bees as honey.

WHAT DO ANIMALS EAT?

Human beings depend on plants and animals for their food and other needs and so are animals on plants. We depend on non-living things also. Air, water and soil are the non-living . living things depend on non-living things for their existence.

Animals directly are indirectly depend in plants for their food. animals depends on plants for food, oxygen and shelther.

Children have you seen some animals eating only plants. These animals are called herbivores. Herbivores  such as cow,dogs camels, and deer eat grass.

 Herbivores have sharp and broad front teeth to bite the grass. Their  back teeth are flat this help to chew food.

Some animals eat only flesh of other animals. These animals are called carnivores. Carnivores such as lion, tiger, wolf and dear are eat flesh of other animals.Carnivores have sharp pointed front teeth. Their back teeth are flat this help to chew food.

 Some animals eat both plants and vegetables. These animals are called omnivores. Omnivores such as human being, bear etc eat both plants and animals.

THANKYOU,

NANDITHAAKUNURI 

DIFFUSION-TEXT

DIFFUSION

UPTAKE OF WATER AND SALT BY PLANTS

BIOLOGY

You have learnt earlier that plants survive if water, minerals ans others nutrients are provided to them. In this lesson, we will learn how these substances enter the plant cell. To understand this we have to understand the terms diffusion and ‘osmosis’ and the processes associated with them.

Diffusion
We will do a simple experiment to understand the process of diffusion. Take a beaker full of water and carefully add two or three crystals of copper sulphate or potassium permanganate.

When the crystals settle down on the bottom of beaker, leave it on the table and do not distrub this and Watch it from time to time and record the changes in the colour of water.

The crystals starts dissolving in water. The water around the crystals will appear dark in colour. As time progress, all the wter in the beaker becomes coloured- initially pale in colour and slowly all the water in the beaker becomes uniformly coloured.

Let us now understand the changes that have taken place.
When the permanganate crystal settles at the bottom of the beaker, a small amount of water comes in contact with the surface of crystal. This water dissolves permanganate and results in the formation of a concentrated solution of the salt at the point. 

This is the reason for the appearance of small dark coloured spot at the bottom of the beaker in the intial stages.

From this spot, the molecules of permanganate move away and get dispered all over the water in the beaker. As this goes on, rest of the water becomes coloured.

As the concentration of dissolved permanganate increase, the colour of water also becomes darker. Finally, after along time, all the molecules of permanganate are uniformly distrusted in the water and water in the beaker becomes uniformly coloured.

From this experiment we cleared that:
1. All the molecules in a solution are in a state of       continuous motion.
2. They move randomly in all the directions.
3. Molecules move from higher concentration to         lower concentration.
4. this movement from higher to lower                  

    concentration occurs till the concentration    

    becomes equal at both the points..

The process of movement of molecules or ions from appoint of high concentration to a point of low concentration till the concentration at both the points become equal is called diffusion.

We have not supplied and additional energy for the movement of the molecules. The energy required for the movement of molecules comes from the kinetic energy of the molecules its self. The process of diffusion occurs nor only in water but also in air.

The process of diffusion occurs not only in water but also in air. This is commonly amounts in the bottle is opened- molecules responsible for perfume are in the air amounts in the bottle while there are no perfume molecules in the air surrounding the bottle. Hence , perfume molecules diffuse through air to all the areas in the room.

Diffusion is physical process and no external energy is required for the movement of molecule by diffusion.

THANKYOU,
NANDITHA AKUNURI

http://www.sonuacademy.in/2016/03/diffusion-text.html

MODE OF NUTRITION IN PLANTS-TEXT

MODE OF NUTRITION IN PLANTS

BIOLOGY

CBSE-VII

In Class VI you learnt that food is essential for all living organisms.

You also learnt that carbohydrates, proteins, fats, vitamins and minerals are components of food. These components of food are necessary for our body and are called nutrients.

All living organisms require food. Plants can make their food themselves but animals including humans cannot. They get it from plants or animals that eat plants. Thus, humans and animals are directly or indirectly dependent on plants.

MODE OF NUTRITION IN PLANTS:
Plants are the only organisms that can prepare food for themselves by using water, carbon dioxide and minerals. The raw materials are present in their surroundings.

Living organisms to build their bodies, to grow, to repair damaged parts of their bodies and provide the energy to carry out life processes.

Nutrition is the mode of taking food by an organism and its utilisation by the body. The mode of nutrition in which organisms make food themselves from simple substances is called autotrophic (auto = self; trophos = nourishment) nutrition.

Therefore, plants are called autotrophs. Animals and most other organisms take in ready made food prepared by the plants. They are called heterotrophs (heteros = other).

Boojho wants to know how plants prepare their own food. Now we may ask where the food factories of plants are located: whether food is made in all parts of a plant or only in certain parts? How do plants obtain the raw materials from the surroundings? How do they transport them to the food factories of the plants?

THANKYOU,
NANDITHA AKUNURI