Explanation

• Vitamin D helps in absorption of calcium and phosphorus from the intestine.
• Its deficiency leads to softening of bones, called osteomalacia in adults (rickets in children).

Additional information:

• Vitamin D is also known as the “Sunshine Vitamin”.
• Because it is synthesized in the skin by sunlight.

Last verified on 18-01-2026

Explanation

• Egg yolk is a nutritious food rich in fats, proteins, and fat-soluble vitamins.
• It is especially known as a good dietary source of Vitamin D (Calciferol).

Additional information:

• Egg yolk also contains Vitamin A, E, and healthy fats.
• Vitamin D deficiency can cause rickets and weak bones.

Last verified on 18-01-2026

Explanation

Paediatrics is the branch of medicine that deals with the health and medical care of children.

It covers newborns, infants, children, and adolescents.

Explanation

Sericulture is the cultivation of silkworms to produce silk.

It involves breeding silkworms, feeding them mulberry leaves, and harvesting silk cocoons.

Silk produced is used in textiles and clothing.

Explanation

A pacemaker is a small device implanted in the chest.

Its main function is to regulate the heartbeat.