D. Both deficiency and excess of nutrients leading to health problems
Answer: Option D
Solution (By JKExamLibrary)
Malnutrition includes undernutrition (deficiency of calories, protein, or micronutrients) and overnutrition (excess intake leading to obesity and related diseases). Both result in physiological disorders. Examples: marasmus and kwashiorkor (deficiency), obesity (excess). A balanced diet prevents malnutrition. It is a significant global health issue, especially in developing countries.
Explanation:
The stamen is the male reproductive organ, consisting of an anther (producing pollen) and a filament. The pistil (carpel) is the female part, petals attract pollinators, sepals protect the bud.
Explanation:
The 'lub' sound occurs at the beginning of ventricular systole when the atrioventricular valves (mitral and tricuspid) close to prevent backflow of blood into the atria. The 'dub' sound occurs at the beginning of diastole due to closure of the semilunar valves (aortic and pulmonary). Valve closure is passive, resulting from pressure gradients.
Explanation:
Scurvy results from vitamin C deficiency, leading to bleeding gums, poor wound healing, and anemia. Vitamin A deficiency causes night blindness, D rickets, B₁ beriberi.
No comments yet. Be the first to start the discussion!