AIIMS 2018 Botany Lipids MCQ Question

Linoleic acid (C₁₈H₃₄O₂) is classified as an essential fatty acid because it cannot be synthesized by the human body and must be obtained through diet; it is crucial for various physiological functions, including cell membrane integrity and the production of signaling molecules. Linolenic acid (C₁₈H₃₀O₂) is also an essential fatty acid, specifically an omega-3 fatty acid, which plays a vital role in cardiovascular health and anti-inflammatory processes. Arachidonic acid (C₂₀H₃₂O₄), however, is not considered essential because it can be synthesized from linoleic acid in the body, thus making it non-essential in the dietary context.