Nutrition and Food Sources

This is a right answer. Foods containing lots of sugar and starch are rich in carbohydrates.Carbohydrates are energy giving food.

This is the right answer. Milk contains all of the above nutrients. That is why it is considered a complete food.

Soybeans and nuts are the only plant foods which contain first class proteins.

Yes, it is the incorrect statement. Milk not only contains proteins but also some nutrients such as carbohydrates fats, vitamins and minerals.

It is incorrect to say that the vegetarian food lacks some necessary components of food. Actually, they are highly nutritious. Milk, fruits, cereals contain all the components of food, which are necessary to be called as a balanced diet.

Honey is a rich source of carbohydrate.  In 100 grams of honey, only 3 milligrams of protein is obtained. 

100 grams of biscuits release 450 kcal of energy. 

Yes, it is the correct answer. The substances, which are combined to make a particular dish are called ingredients. For example, a dish of dal can be made by using many ingredients such as pulses, salt, spices, oil and water.

Rhodopsin is a visual pigment in rod cells that requires vitamin A (retinal) for its formation. Carrots are rich in beta-carotene, which the body converts to vitamin A. While tomatoes, radish, guavas, and bananas are nutritious, they are not significant sources of vitamin A precursors.

The correct sequence is: nutrient (noun as subject, 'the nutrient potassium'), Nutrition (abstract noun as subject, 'Nutrition is considered'), and nutritious (adjective modifying meal, 'nutritious meal'). This tests understanding that 'nutrient' refers to specific substances, 'nutrition' is the broader concept/process, and 'nutritious' is the adjective describing healthful food.

Amino acids are biologically important organic compounds made from amine (-NH2) and carboxylic acid (-COOH).

Concentrates are the foods, which are low in fibre and contain high levels of proteins and other nutrients like carbohydrates and minerals. In general, animal feed includes: (1) roughage which contains fibre, and (2) concentrates which are low in fibre and contain relatively high levels of proteins and other nutrients. Cattles need balanced rations containing all nutrients in proportionate amounts. Micronutrients are also needed for growth and they promote the health and milk output of dairy animals. Micronutrients are the nutrients needed in small quantities. These include dietary minerals needed by the body. For example, iron, cobalt, chromium, etc. while macronutrients are required in large quantities. For example, carbohydrates, proteins and fats. Carbohydrates, proteins and fats supply 90% of the dry weight of the diet and 100% of its energy. 

Metabolism is conversion within the body; regurgitate is to vomit out.

The passage describes how dietary fibre affects intestinal function. Intestinal contractions occur in a regular, wave-like pattern called peristalsis. 'Rhythmic' best describes these recurring muscular contractions that move food through the digestive tract. 'Progressive,' 'alternative,' and 'delayed' don't accurately describe the nature of intestinal muscle activity.