Main dietary source of plant protein:

UP NHM CHO 7 Sept 2022 (Shift-2)

Applied Nutrition & Dietetics

Easy

Appeared in: UP NHM CHO 7 Sept 2022 (Shift-2)

Explanation

Pulses, which include lentils, beans, and peas, are the most significant dietary source of plant-based protein.
They contain a high protein content, typically ranging from 20% to 25% by weight, which is double that of wheat and triple that of rice.
In many diets, especially in countries like India, pulses combined with cereals form the primary source of protein due to their affordability and availability.
Combining pulses (rich in lysine) with cereals (rich in methionine) provides a complete amino acid profile through a process called mutual supplementation.

Option A: Green leafy vegetables are a poor source of protein, typically containing only 2-4%. Their primary nutritional value comes from vitamins, minerals, and dietary fiber.
Option B: Fruits contain negligible amounts of protein (usually less than 1%). They are mainly sources of simple carbohydrates (sugars), vitamins (especially Vitamin C), and antioxidants.
Option C: Milk is an animal-based protein source, not a plant-based one. The question specifically asks for a plant protein source.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Dietary sources of plant-based protein as background academic context rather than a clinical decision trigger.
Nurses must educate patients on balanced diets. Understanding protein sources is crucial, especially for vegetarians, vegans, or those with specific dietary needs.
Recommending a combination of pulses and cereals is a practical way to ensure patients receive all essential amino acids from plant-based sources.
In the Indian context, where a large portion of the population is vegetarian, pulses (dals) are a staple and a critical component of daily nutrition for growth and tissue repair.

How to Approach the Question

First, identify the key terms in the question: 'main dietary source' and 'plant protein'.
The term 'plant protein' immediately disqualifies any options that are from animal sources.
Evaluate the options: Scan the list and identify 'Milk' as an animal product, eliminating it from consideration.
Next, consider the term 'main source' for the remaining plant-based options: 'Green leafy vegetables', 'Fruits', and 'Pulses'.
Recall or deduce the relative protein content of these food groups. Fruits and vegetables are known for vitamins and fiber, not for being a primary source of protein.
Pulses (beans, lentils) are widely recognized as a primary protein source in many vegetarian and non-vegetarian diets, making them the most logical answer.

Concept Tested & Keywords

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