Five basic food groups and food guide pyramid

Water is essential because it forms a major part of body fluids and supports digestion, absorption, transport of nutrients, removal of wastes, regulation of body temperature, and maintenance of fluid and electrolyte balance. It also helps cells and organs function properly. Thus, option B gives the relevant physiological reasons. Changing food colour, washing utensils, or improving taste is not the primary reason water is essential to the body.

Food groups classify foods with similar nutritional characteristics and help a person select variety from different categories. Using them in meal planning makes it easier to include appropriate amounts of cereals or other staples, pulses or protein foods, vegetables, fruits, milk products, and healthy fats according to individual needs. Variety improves the chance of obtaining essential nutrients. Thus, food groups serve as a practical guide for planning a balanced diet.

Meal frequency means the number of times a person eats or receives food during a specified period, usually one day. It includes main meals and planned snacks, and it may be adjusted according to appetite, medical condition, energy needs and tolerance. It does not describe the colour of food, the thickness of a book or the location of a kitchen. Therefore, option C gives the correct definition.

Fruits and vegetables supply vitamins, minerals, dietary fibre, water, and many protective plant compounds. These nutrients support immunity, normal body functions, bowel health, and overall well-being. They are important components of a balanced diet, but they are not automatically medicines and should not replace prescribed treatment.

Pulses such as lentils, chickpeas, kidney beans, and pigeon peas are important plant sources of protein. Protein is needed for growth, maintenance, and repair of body tissues, and pulses also contribute fibre, minerals, and some complex carbohydrates. They are therefore valuable in a balanced diet, especially when combined with cereals.

Whole grains contain all three parts of the grain kernel: the bran, germ, and endosperm. During refining, the bran and germ are often removed, so much of the fibre, vitamins, minerals, and protective plant compounds is lost. Therefore, whole grains such as brown rice, oats, and whole-wheat products generally offer better nutritional value and may support digestion and overall health. They should still be eaten as part of a varied, balanced diet.

Dietary fibre is present mainly in plant foods, especially fruits, vegetables, pulses, nuts and whole grains. It adds bulk to food, supports regular bowel movement, may help control blood glucose and cholesterol, and promotes digestive health. Sugar, ghee and salt do not provide meaningful dietary fibre. Thus, option A is correct.

Seasonal fruits and vegetables are harvested during their natural growing period and may therefore be fresher, more readily available and sometimes more affordable. They also add dietary fibre, vitamins, minerals and protective plant compounds to meals. Availability and quality vary by place and season, but option C is the best answer.

A food pyramid or food-group guide classifies foods according to their major nutrient contributions and indicates the variety and relative amounts that should be included in a healthy diet. It helps learners plan meals containing cereals or other staples, protein foods, vegetables, fruits, and suitable fats or dairy products. Therefore, option B is correct.

Eating a variety of foods from different groups increases the chance of obtaining a broad range of nutrients. Cereals and millets can provide energy, pulses and other protein foods provide protein, while fruits and vegetables contribute vitamins, minerals, fibre, and protective compounds. Variety also improves meal acceptability and supports a balanced diet. Thus, option C is correct.

Cereals such as rice, wheat, maize and millet are rich in starch, a complex carbohydrate. During digestion, starch is broken down into glucose, which cells use to release energy for movement, work and essential body processes. Cereals may also provide protein, fibre, vitamins and minerals, but their major energy contribution comes from carbohydrates. Therefore, option C is correct.

Fruits and vegetables are called protective foods because they supply vitamins, minerals, fibre and many beneficial plant compounds. These nutrients support immunity, healthy skin and vision, normal body regulation and digestive health, while fibre helps bowel function. Although fruits contain natural sugars, they do not provide only sugar. Therefore, option B correctly explains why fruits and vegetables protect health.

Dietary fibre is the part of plant foods that is not completely digested in the small intestine. It adds bulk to stool, holds water, and helps food and waste move through the intestine, thereby supporting regular bowel movements and reducing constipation. Fibre is found in whole grains, pulses, fruits, vegetables, nuts and seeds. Hence, option C is correct.

Food groups classify foods according to the nutrients and functions they commonly provide. Knowing the groups helps a person include variety, select suitable proportions, and combine energy-giving, body-building, and protective foods in daily meals. This supports a balanced diet rather than dependence on one type of food. Therefore, option D is the only correct answer.

Food groups organise foods that provide different types and amounts of nutrients. Including suitable foods from several groups adds variety and helps supply carbohydrates, proteins, fats, vitamins, minerals, fibre, and water in appropriate proportions. This supports a balanced diet and reduces the chance of missing important nutrients. Food groups do not merely decorate food, spoil it, or eliminate the body's need for water.

Minerals such as iron, calcium, iodine, and sodium perform important structural and regulatory roles in the body. Iron deficiency may cause anaemia, iodine deficiency can affect thyroid function, and calcium deficiency can weaken bones and teeth. Thus, insufficient minerals can disturb growth, blood formation, nerve activity, muscle action, or fluid balance. Option D is correct because the exact effect depends on which mineral is deficient.

Dietary fibre is found mainly in plant foods. Whole grains retain the bran and germ that contain fibre, while fruits and vegetables provide fibre through their cell walls. Pulses, beans, nuts, and seeds are also useful sources. Sugar, oils, ghee, and salt contain little or no dietary fibre. Therefore, option C is correct because whole grains, fruits, and vegetables are major everyday fibre sources.

Supplements should be used only when a demonstrated dietary need, deficiency, life stage, or medical condition justifies them. A doctor or registered dietitian can select the appropriate nutrient, dose, duration, and form, while considering medicines and possible toxicity. Self-prescribing or following advertisements and friends can be unsafe. Hence B is correct.

An upright and properly supported sitting position helps food and liquid move safely through the mouth and throat. It can reduce the risk of choking, coughing, aspiration, and discomfort, especially in patients with weakness or swallowing difficulty. Feeding position should follow the patient’s condition and professional instructions. Thus, D is correct.

Slow feeding gives the patient time to chew, coordinate breathing and swallowing, and signal discomfort or fullness. It can reduce hurried swallowing, coughing, choking, and aspiration risk, especially in people with weakness or dysphagia. The patient should be positioned safely and observed throughout feeding. Therefore, safe swallowing and comfort explain why C is correct.

Food groups classify foods with broadly similar nutrient contributions. Using them helps a person select variety, combine different nutrient sources and notice whether important groups are missing from the diet. This supports balanced meal planning rather than focusing only on cost, appearance or the amount of food on a plate. Therefore, option B is correct.

Fruits and vegetables are protective foods because they supply vitamins, minerals, water and dietary fibre. These nutrients support immunity, digestion, normal growth and general health. They also add variety and help make meals balanced. Therefore, the correct answer is B, not an option concerned only with price, frying or salt.

Food groups classify foods with broadly similar nutrient contributions, such as cereals, pulses, milk, fruits and vegetables. This simple classification helps learners plan meals that include variety, adequate energy, protein, vitamins and minerals. It makes nutrition advice easier to understand and apply in everyday food selection.

Milk and milk products provide highly usable protein and important amounts of calcium, along with nutrients such as riboflavin and vitamin B12 in many products. Calcium supports bones and teeth, while protein supports tissue growth and repair. The exact nutrient profile varies with processing, fat level, and fortification, but milk is not merely a source of salt or spices.

Fruits and vegetables supply vitamins, minerals, water, dietary fibre, and many protective phytochemicals. Fibre supports bowel function and may help control blood glucose and cholesterol, while micronutrients support immunity, vision, blood formation, and normal metabolism. A varied selection of colours and seasonal produce helps improve overall diet quality.