Nutrition and Food Sources

This is the correct option. Bean is rich in proteins and is obtained from the seeds of leguminous plants.

This is the correct option. Carbohydrates are the energy-giving foods. Proteins are the growth-promoting foods. Minerals are the protective foods.

Unripe fruits contain organic acids such as citric, malic, tartaric, and oxalic acids that give them their characteristic sharp, sour, or bitter taste. As fruits ripen, these acids break down and are converted into sugars, making the fruit sweeter. Starch is tasteless, carotenoids provide pigmentation, and lipids are fats.

Tomatoes are relatively high in oxalates, compounds that can contribute to the formation of certain types of kidney stones. People prone to kidney stones, particularly calcium oxalate stones, are often advised to limit high-oxalate foods. Lemon, vinegar, and lentils do not have the same association with kidney stone formation.

Egg and soyabean are good sources of proteins.

Milk, meat and eggs are used as food. Skin is used to make leather. Waste is used as manure. Bones are also used as fertilizer. Thus, this option is correct.

Fruits have high water content, low food value but are rich in minerals and vitamins. Commonly the term fruit is used for those which are eaten without cooking.

Potato contains carbohydrates that are energy giving.

Tannic acid, a type of tannin, is naturally found in various plant sources. Tea leaves are particularly rich in tannic acid, which contributes to their characteristic astringent taste and is responsible for the dark color in brewed black tea. While other sources like fruits (especially unripe ones), nuts, and tree bark also contain tannins, tea is one of the most well-known and commercially significant natural sources.

Citric acid is abundantly found in citrus fruits, with lemons being one of the richest natural sources. Lemons contain approximately 5-8% citric acid by weight, which gives them their characteristic sour taste. Citric acid serves as a natural preservative and flavor enhancer in many food products.

Pulses are a rich source of plant protein and milk is a rich source of animal protein.

This is the correct option. These contain fibres and roughage that is good for preventing constipation.

This is the correct answer.

Milk and dairy products are rich in calcium and vitamin D, which are essential nutrients for building and maintaining strong bones and teeth. Pizza (depending on toppings), meat, fish, fruits, and vegetables provide other nutrients but dairy is specifically known for bone health due to its calcium content.