Biology

Deficiency Diseases and Disorders

722 Questions

Deficiency diseases and disorders are caused by a lack of essential nutrients, vitamins, and minerals in the diet or environment. This includes conditions like anemia, goitre, and night blindness. Practice these questions to prepare for general science exams.

Vitamin deficiency symptomsMineral deficiency disordersMalnutrition conceptsHormonal and specific diseases

Deficiency Diseases and Disorders Questions

Multiple choice

The deficiency of which of the following vitamins can cause ricket and osteomalacia?

  1. Vitamin A

  2. Vitamin B

  3. Vitamin D

  4. Vitamin E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin D is essential for calcium absorption and bone mineralization. Deficiency causes rickets (soft, weak bones in children) and osteomalacia (soft bones in adults). Vitamins A, B, and E are important for other functions but not directly for bone mineralization. The connection is calcium metabolism.

Multiple choice

Which one of the following is a disease caused by zinc deficiency ?

  1. Die back of rice

  2. Khaira disease of rice

  3. Black heart of potato

  4. Brown spot of rice
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Black heart of potato is a well-documented zinc deficiency disorder causing internal necrosis. Khaira disease of rice is caused by zinc deficiency (not B). Die-back and brown spot of rice are typically associated with other nutrient deficiencies (copper and fungal causes respectively). The question asks which is caused by zinc deficiency, and C correctly identifies black heart of potato as a zinc-related disorder.

Multiple choice

Xerophthalmia is caused due to deficiency of

  1. vitamin E

  2. vitamin A

  3. vitamin D

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deficiency of vitamin A causes xerophthalmia but there can be other causes also. In this defect, eye fails to produce tears because of dryness of cornea.

Multiple choice

Haemorrhage is caused by the deficiency of vitamin

  1. A

  2. D

  3. E

  4. K

  5. B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin K is essential for blood clotting. Its deficiency impairs the production of clotting factors in the liver, leading to hemorrhage (excessive bleeding). Vitamins A, D, E, and B are not primarily responsible for coagulation.

Multiple choice

Why deficiency diseases usually occur in childhood? (i) This is period of growth (ii) Body requires plenty of nutrients at this time (iii) Organ systems are not developed completely (iv) Intake of food is limited during this time

  1. (i) and (iv)

  2. (i) and (ii)

  3. (ii) and (iii)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Many of the deficiency diseases occur during childhood as this is the period of growth when the body requires plenty of nutrients.

Multiple choice

How are bones affected by Vitamin - D deficiency?

  1. It affects the repair of bone.

  2. It affects the phosphorus levels of bones.

  3. It affects absorption of calcium by the bones.

  4. It leads to loss of calcium by the bone.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin D deficiency affects the absorption of calcium by bones leading to weak and soft bones.