Wheat, rice, and corns are obtained from the grassy grains. The grains are starchy and are used to cook food and thus collectively known as cereals.

Kheer is a complex cooked food product made by using milk, sugar and rice. Out of these milk is the only animal product, whereas both sugar and rice are plant products. 

Food is vital for living beings as it helps in the maintenance of the body by protecting us from diseases and regulating our body functions, by providing proper nutrition. It also helps the organisms in their proper growth. So, statement given in option (3), saying that food maintains our life and growth, is correct. 

Cooking makes the components of the food simpler and easily digestible by the body. Also, cooking of food kills various germs so, the food can be preserved for long. 

Radish, carrot, cucumber, onion, cabbage and beetroot are fibrous food items, which can be eaten raw as salad. Bitter gourd and pumpkin are not a part of salad. 

Different parts of different plants are used to obtain food products, such as seeds of mustard give oil, stem of sugarcane is processed to get sugar, leaves of mint and spinach are used directly. 

Ghee is obtained by processing of milk and milk is an animal product. Idli is made by using rice, urad dal, salt and water. Rice and urad dal are the products obtained from plants. Kheer requires milk, which is again an animal product. Chicken curry is made from chicken, which is also an animal source. Thus, it is idli only, which is prepared by using plant products. 

The seeds of mustard plants give oil and their leaves are used as a vegetable. So, the seeds and the leaves of a mustard plant are edible. 

Cucumber, tomato and brinjal are fruits, used as food, whereas it is the roots of the turnip plant which are used as food. 

All are said to be milk products. 

The meat obtained from hen, pig, sheep, goat and fish is used as food. So, these animals are known as meat yielding animals. 

Plants are autotrophs. They can make their own food from inorganic raw materials like water and carbon dioxide obtained from their surroundings. Plants act as the source of food for all the birds and animals, including humans. 

Food is vital for living beings as it helps in the maintenance of the body by protecting us from disease and regulating our body functions by providing proper nutrition. It also helps the organisms in their proper growth. So, anything taken in for maintaining life and growth of organism is known as food. 

Maize, wheat and rice are the crops which are used as raw materials for the preparation of food. Chapatti is cooked food prepared from flour and water. 

Dry seeds of moong are kept in water for a day and wrapped in wet cloth the next day. This way they develop small white structures growing out of them. The seeds are then said to be sprouted or germinated. 

Potato is the underground stem of the plant, whereas carrot and radish are the underground roots of plants. Tomato is the only option out of the given four, the fruit of which is aerial and is consumed as food. 

Pulses, fruits, vegetables and chapatti are plant products; milk and meat are animal products. Both the products together make components of a balanced diet. Balanced diet refers to the complete a diet, which has all the nutrients for the growth of an organism. 

Honey is the food product obtained from an insect honey bee; milk from the milk yielding animals like cow, goat, and buffalo; whereas eggs from the egg laying animals. So, all these are animal products. Grains, pulses, spinach, fruits etc. are plant products.

The bud of the plant is the part which develops into a flower. Leaf and stem can not further develop to form another part of the plant and seed is the structure formed after the development of a flower. 

Meat yielding animals are used to obtain meat as the source of food. Goat, hen, fish are known as meat yielding animals. 

Cow, goat and buffalo are milk yielding animals, whereas pig is a meat yielding animal. 

Generally, it is the seeds of the plants which are used to extract oils. For example: seeds of mustard, linseed etc. 

South Indians consume rice or rice based products in their diet majorly. Sambar and idli are both rice based products and is the major food of South India. 

Cow and goat are known as milk yielding animals as they give milk, whereas curd, cheese and ghee are the products which are obtained by processing milk. 

Cereals are grains which contain starch and are used as food. e.g. wheat, rice, oats, maize, millets etc. Grams are not starchy and can not be classified as cereals.