Question

Write the sources and functions of following vitamins -:
a) vitamin A
b) vitamin D
c) vitamin E
d) vitamin K
e) vitamin C
f) vitamin B 1
g) vitamin B 2
h) vitamin B 12​

Answer 1

Vitamin A

Source: Green leafy vegetables, ripe yellow fruits, guava, milk, liver, nuts, tomatoes, oranges, carrots, broccoli, watermelon etc.

Function: Vitamin A helps in the development and maintenance of teeth, skeletal and soft tissues.

• It is also important for the maintenance of skin and the mucous membrane.

• More importantly, the mucous membrane promotes good eyesight, specifically in low light.

• Beta-carotene, a form of vitamin A, protects cells from free-radicals. This may reduce the risk of cancer.

Vitamin B1 (Thiamine)

Source: Fresh fruits, potatoes, sweet potatoes, peas, corn, cashew nuts, wheat, milk, black beans, dates etc.

Vitamin B2 (Riboflavin)

Source: Banana, dates, mushrooms, grapes, mangoes, peas, pumpkin, popcorn etc.

Vitamin B12

Source: Vitamin B-12 supplements are found both in animal and plants products. These supplements include milk, seafood, meat, eggs and other dairy products. Plant products include vegetables, cereals, almond, oats, rice, leafy vegetables, fruits, beverage, and other fortified foods products.

Function: It is also known as cobalamin. It acts as a cofactor in numerous important metabolic processes. It has an important role in synthesis of myelin, thus, it is important for the normal functioning of the nervous system. It also plays an important role in the maturation of red blood cells in the bone marrow.

Vitamin C

Source: Fresh fruits, black currant, broccoli, goat milk and chestnuts.

Function: Important for the growth and repair of body tissues.

• Helps to heal wounds more effectively

Aids the absorption of iron.

• Helpful for the maintenance of cartilage, teeth and bones.

• Vitamin C is also an antioxidant, hence it aids in blocking some damage caused by free radicals.

Vitamin D

Source: Fish, egg, liver, beef, cod, chicken breast etc.

Function: Required for mineral homeostasis.

• Required for the formation of bones.

• Required to maintain normal blood levels of phosphorus and calcium.

Vitamin E

Source: Potatoes, pumpkin, guava, mango, milk, nuts, seeds etc.

Function: Functions as a powerful antioxidant.

• Protects the cells from the effects of free - radicals.

• Boosts immune system.

• Required for full filling various cellular functions

Vitamin K

Source: Tomatoes, broccoli, chestnuts, cashew nuts, beef, lamb, mangoes, grapes etc.

Function: Plays role in the blood clot formation

• Essential for the functioning of several proteins involved in physiological processes.

Answer 2

Answer:

A - Carrot , pumpkin

D- Sunlight

E- plant oil

K- green leafy vegetables

B1- fish , meat

B2- milk, eggs

B 12- beef liver , fish