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
-
Microcytic anaemia
-
Rickets
-
Dental caries
-
Goitre
-
Pellagra
A
Correct answer
Explanation
This is the correct option.
-
zinc
-
manganese
-
boron
-
copper
A
Correct answer
Explanation
Zinc deficiency causes exanthema (also known as mottle leaf) in citrus plants. Symptoms include yellowish mottling between leaf veins, small narrow leaves, stunted growth, and reduced fruit size. Zinc is essential for several enzyme systems including carbonic anhydrase and alcohol dehydrogenase. Manganese deficiency causes different symptoms (interveinal chlorosis), boron deficiency causes corking and cracking, and copper deficiency causes wilting and dieback.
-
bending of leaf tip
-
chlorosis of leaves
-
mottling and necrosis of leaves
-
poor development of vasculature
C
Correct answer
Explanation
Deficiency of molybdenum causes mottling and necrosis of leaves.
-
Loss of weight
-
Inability to adapt to increased food intake.
-
Loss of memory
-
Depletion of bones
A
Correct answer
Explanation
Cachexia is a complex metabolic syndrome associated with underlying illness (especially cancer, AIDS, and other chronic conditions) characterized by loss of muscle with or without loss of fat mass. While weight loss is a key feature, cachexia is more than just simple starvation or weight loss.
-
Loss of weight
-
Inability to adapt to increased food intake.
-
Loss of memory
-
Depletion of bones
A
Correct answer
Explanation
Cachexia is a complex metabolic syndrome associated with underlying illness, characterized by loss of muscle with or without loss of fat mass. While it involves inability to properly utilize nutrients, the most visible and defining characteristic is significant weight loss and muscle wasting.
-
osteomalacia
-
rickets
-
beriberi
-
scurvy
B
Correct answer
Explanation
Rickets is the condition caused by vitamin D deficiency in children, characterized by soft and weak bones. Osteomalacia is the adult form of bone softening, beriberi is from B1 deficiency, and scurvy from vitamin C deficiency.
-
Scurvy
-
Pellagra
-
Optical neuritis
-
Convulsion
-
Vitamin - A
-
Iodine
-
Potassium
-
Vitamin - C
C
Correct answer
Explanation
Hypokalemia is the medical term for low potassium levels in the blood. Potassium is an essential electrolyte that helps regulate nerve signals, muscle contractions, and heart rhythm. The prefix 'hypo-' means deficient or low, and '-kal' refers to potassium (chemical symbol K).
-
Iron
-
Magnesium
-
Iodine
-
Calcium
-
NA
A
Correct answer
Explanation
Less intake of iron results in this disease. Iron is an essential component of Haemoglobin and helps in its proper functioning.
-
Cholera
-
Beriberi
-
Kwashiorkor
-
Kala-azar
-
Diphtheria
C
Correct answer
Explanation
Kwashiorkor is a form of malnutrition that occurs when there is not enough protein in the diet.
-
premature leaf fall
-
chlorosis of leaves
-
necrosis of stem
-
chlorosis in veins
B
Correct answer
Explanation
Nitrogen deficiency causes chlorosis - the yellowing of leaves due to insufficient chlorophyll production. Nitrogen is a crucial component of chlorophyll molecules and amino acids.
-
rickets
-
night blindness
-
hair fall
-
scurvy
-
none of these
B
Correct answer
Explanation
This caused due to the deficiency of vitamin A
-
rickets
-
scurvy
-
beri - beri
-
anaemia
D
Correct answer
Explanation
Vitamin B6 (pyridoxine) deficiency causes microcytic hypochromic anemia because B6 is essential for hemoglobin synthesis. Rickets is caused by Vitamin D deficiency. Scurvy results from Vitamin C deficiency. Beri-beri is caused by Vitamin B1 (thiamine) deficiency.
-
Beri - Beri
-
Scurvy
-
Night blindness
-
Rickets
C
Correct answer
Explanation
Vitamin A deficiency causes night blindness (nyctalopia) because retinol is essential for producing rhodopsin, the pigment needed for low-light vision. Severe deficiency can lead to complete blindness and increase susceptibility to infections. Beri-beri is thiamine (B1) deficiency, scurvy is vitamin C deficiency, and rickets is vitamin D deficiency.
-
balanced diet
-
only carbohydrates
-
only protein
-
only starch
-
only vitamins
A
Correct answer
Explanation
A balanced diet is required to avoid deficiency diseases.
Vitamins and minerals are important for a healthy lifestyle.