Digestion And Absorption

Step 1: Understanding the role of the appendix.
The appendix in herbivorous animals is involved in the digestion of cellulose. It acts as a site for the fermentation of cellulose, which is difficult to digest. The bacteria in the appendix help in breaking down cellulose, which is a major component of plant cell walls.
Step 2: Analyzing the options.
(A) cellulose: Correct. The appendix helps in the digestion of cellulose in herbivores, as they rely on microbial fermentation to break down plant material.
(B) glycogen: Incorrect. Glycogen is a form of carbohydrate stored in animals, but it is not digested by the appendix.
(C) polypeptides: Incorrect. Polypeptides are proteins, and the digestion of proteins mainly occurs in the stomach and small intestine, not the appendix.
(D) lactose: Incorrect. Lactose is a sugar found in milk, and it is digested in the small intestine with the help of lactase enzyme.
Step 3: Conclusion.
The correct answer is (A) cellulose, as the appendix in herbivorous animals assists in the breakdown of cellulose through microbial fermentation.

Marasmus is a severe form of malnutrition that occurs due to a deficiency in both protein and calories. This condition is most commonly observed in infants and young children, particularly in areas with inadequate nutrition. Marasmus is characterized by a significant loss of muscle mass and body fat, resulting in a very emaciated appearance.

Symptoms of Marasmus:

• Severe weight loss and growth retardation.
• Muscle wasting and a sunken appearance, especially around the face.
• Weakness and lethargy.
• Dry, thin skin with poor elasticity.
• Delayed development and reduced physical activity.

Causes of Marasmus:

Marasmus occurs due to an insufficient intake of protein and calories over an extended period. This deficiency leads to the body breaking down its own muscle and fat tissue to meet energy needs. The most common causes of Marasmus include:

• Poor dietary intake, especially in developing countries where food security is an issue.
• Infections or illnesses that interfere with the body's ability to absorb nutrients.
• Disrupted breastfeeding or lack of access to appropriate infant nutrition.

Difference between Marasmus and Kwashiorkor:

While both conditions are caused by protein deficiency, they have distinct characteristics. Marasmus is primarily caused by both protein and calorie deficiency, leading to extreme weight loss, whereas Kwashiorkor results from protein deficiency alone, causing symptoms like edema (swelling), fatty liver, and changes in skin and hair color.

Treatment of Marasmus:

Marasmus requires medical intervention that includes providing the affected infant with sufficient calories, protein, and micronutrients to restore normal growth and development. Nutritional rehabilitation and gradual refeeding are key aspects of treatment. In severe cases, the infant may require hospital care, including intravenous fluids and nutrients.